# Best Transactional Email Software for Small Business - Page 2

## How Many Transactional Email Software Products Does G2 Track?

**Total Products under this Category:** 136

### Category Stats (Aug 2026)

- **Average Rating:** 4.41/5 (↑0.01 vs Jul 2026) The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** AhaSend (+0.76%) - Among all products in this category, AhaSend recorded the largest rating increase compared to last month

_Last updated: August 04, 2026_

## How Does G2 Rank Transactional Email Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 31,700+ Authentic Reviews
- 136+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

## G2 Grid® for Transactional Email Software
 ![G2 Grid® for Transactional Email Software plotting products by satisfaction and market presence](https://www.g2.com/categories/transactional-email/grids.png?focus%5B%5D=18316&focus%5B%5D=3435&focus%5B%5D=2764&focus%5B%5D=3644&focus%5B%5D=673&focus%5B%5D=15592&focus%5B%5D=2760&focus%5B%5D=2621)

Highlighted products: Customer.io, Brevo Marketing Platform, Amazon Simple Email Service (Amazon SES), Omnisend, Intuit Mailchimp Email Marketing, Email API, ActiveCampaign Postmark, and GetResponse.

Underlying data: [Grid® JSON](https://www.g2.com/categories/transactional-email/grids.json?focus%5B%5D=customer-io&focus%5B%5D=brevo-marketing-platform&focus%5B%5D=amazon-simple-email-service-amazon-ses&focus%5B%5D=omnisend&focus%5B%5D=intuit-mailchimp-email-marketing&focus%5B%5D=netcore-private-limited-email-api&focus%5B%5D=activecampaign-postmark&focus%5B%5D=getresponse&segment=small-business)

**Sponsored**

### Mailgun

150,000+ companies. 400 billion emails a year. 99.99% uptime — backed by SLA Mailgun is the full-stack email infrastructure platform developers and marketers trust to send, test, validate, and improve deliverability at scale. One platform covers the entire email lifecycle: preview and fix rendering issues before you send, clean your lists in real time, fire emails via API at any volume, and surface deliverability problems with AI before they cost you. SOC 2 Type I & II, HIPAA, GDPR, ISO 27001 certified. Trusted by Microsoft, Lyft, and American Express. Part of Sinch, the global leader in cloud communications.

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=225&secure%5Bchosen_at%5D=2026-08-04T20%3A05%3A47Z&secure%5Bdisplayable_resource_id%5D=225&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=225&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=2758&secure%5Bresource_id%5D=225&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Ftransactional-email%2Fsmall-business%3Fpage%3D2&secure%5Btoken%5D=a6131af849624babae57eac62863f69dad07dd793aa5fe112d147b1565fff402&secure%5Burl%5D=https%3A%2F%2Fsignup.mailgun.com%2Fnew%2Fsignup%3Fplan_name%3Ddev_free%3Futm_source%3DG2%26utm_medium%3Dppc%26utm_content%3D%26utm_term%3D%26utm_campaign%3DGL-26-Mg_G2-PPC&secure%5Burl_type%5D=custom_url)

### [Knock](https://www.g2.com/products/knock-knock/reviews)

Knock is infrastructure for sending product and customer messaging. Ship cross-channel product notifications and lifecycle messaging that drives engagement, growth, and retention. Knock has everything you need to power notifications for your product, including: - A powerful workflow engine to automate and manage your entire cross-channel motion, from in-product messaging to email and push notifications. - Branded, in-product messaging components, including embeddable inboxes, feeds, and lifecycle messages. - Broadcasts make it easy to send effective, one-time messages to custom audiences. - A dynamic template manager for consistent, personalized cross-channel messaging. - End-to-end observability and analytics to monitor platform health and engagement. - Notification preferences give users control of where and when they receive notifications to increase retention. - Powerful integrations with dozens of tools across email, SMS, push, and chat.

**Average Rating:** 4.6/5.0

**Total Reviews:** 147

#### How Do G2 Users Rate Knock?

- **Has the product been a good partner in doing business?:** 9.5/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 9.4/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 8.6/10 (Category avg: 8.5/10)
- **Mail Send API:** 9.0/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Knock?

- **Seller:** [Knock](https://www.g2.com/sellers/knock-68c9dc19-2711-4d35-9006-94e645cd7e02)
- **Company Website:** knock.app
- **Year Founded:** 2021
- **HQ Location:** New York, NY
- **Twitter:** @knocklabs  
2,106 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ab2a8ce7eb92085e7e1e319a3a0a1e7617780a438616b91fede06efd099f9e00&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fknocklabs%2F&secure%5Burl_type%5D=linkedin_company_website)  
23 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Software Engineer, CTO
- **Top Industries:** Computer Software, Information Technology and Services
- **Company Size:** 72% Small, 21% Medium

#### What Do G2 Reviewers Say About Knock?

_AI-generated summary from verified user reviews_

##### Pros

- Users value Knock's **ease of use** , enabling smooth setup, intuitive UI, and seamless integration for all team members.
- Users find Knock's **streamlined notifications** invaluable, appreciating its seamless integration and excellent support for all systems.
- Users highlight the **easy setup** of Knock, allowing for quick integration and effective notification management.
- Users commend Knock's **excellent customer support** , highlighting its responsiveness and knowledge in resolving issues promptly.
- Users value the **easy integrations** of Knock, allowing seamless setup for notifications and workflows across platforms.

##### Cons

- Users are frustrated by the **missing features** , including incomplete documentation and lack of support for popular frameworks.
- Users encounter **notification issues** with Knock, including confusion over updates and challenges with push notification implementation.
- Users find the **difficult setup** of Knock challenging, especially with UI reliance for configurations and templates management.
- Users feel the product lacks **insufficient features** , including better analytics, UI intuitiveness, and updated documentation.
- Users find the **complexity** of Knock's email creation and settings confusing, despite recent improvements in UI clarity.

#### What Are Recent G2 Reviews of Knock?

**["Effortless Workflow Management with Powerful Integrations"](https://www.g2.com/survey_responses/knock-review-12789262)**

**Rating:** 5.0/5.0 stars

_— Bradly L._

[Read full review](https://www.g2.com/survey_responses/knock-review-12789262)

**["Robust Multichannel Notifications Made Easy"](https://www.g2.com/survey_responses/knock-review-13041880)**

**Rating:** 5.0/5.0 stars

_— Tyler T._

[Read full review](https://www.g2.com/survey_responses/knock-review-13041880)

### [WebEngage](https://www.g2.com/products/webengage/reviews)

WebEngage is a full-stack Retention OS that simplifies customer engagement for 800+ brands across the globe. The platform enables businesses to build personalized and meaningful relationships with their users across various digital channels. With its comprehensive suite of tools and solutions, WebEngage empowers businesses to understand, engage, and retain customers effectively. - UNIFY CUSTOMER DATA: WebEngage enables businesses to consolidate customer data from various sources, providing real-time insights and allowing dynamic micro-segmentation for targeted campaigns based on specific customer attributes and behaviors. - MULTI-CHANNEL JOURNEYS: With WebEngage's intuitive drag-and-drop workflow builder, businesses can seamlessly design and automate multi-channel customer journeys, ensuring consistent and personalized experiences across channels such as email, SMS, push notifications, and more. - TARGETED CAMPAIGNS: WebEngage empowers businesses to automate personalized campaigns triggered by customer actions and predefined business events. This ensures timely and relevant communication to enhance customer engagement and conversion rates. - AI-DRIVEN PREDICTIVE MODELS: WebEngage Analytics dashboard empowers all metrics required to segment, engage and retain priority customers, churn to convert windows and ROI optimization,This allows businesses to focus their interventions and campaigns for maximum impact and better ROI. - 1:1 PERSONALIZATION: WebEngage enables businesses to deliver personalized experiences at scale. By incorporating user intent, preferences, and other relevant data, businesses can tailor their communications to each individual customer, fostering omni-channel customer engagement. What's more? WebEngage’s platform is quick and easy to integrate. Compatible with range of ESP and MSP, all it takes is a few hours from the tech team. Presence across the globe: With headquarters in India, WebEngage has expanded its operations globally with offices and presence in the Middle East & Africa region, Southeast Asia, and South America.

**Average Rating:** 4.5/5.0

**Total Reviews:** 755

#### How Do G2 Users Rate WebEngage?

- **Has the product been a good partner in doing business?:** 8.8/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 8.5/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 8.3/10 (Category avg: 8.5/10)
- **Mail Send API:** 8.6/10 (Category avg: 8.9/10)

#### Who Is the Company Behind WebEngage?

- **Seller:** [WebEngage](https://www.g2.com/sellers/webengage)
- **Company Website:** webengage.com
- **Year Founded:** 2011
- **HQ Location:** Mumbai
- **Twitter:** @webengage  
5,055 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=aeadee46de333571c05aad4d44c1e391cafe43014daea3fc8494e35be0806eed&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F2663547%2F&secure%5Burl_type%5D=linkedin_company_website)  
367 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Product Manager, Digital Marketing Manager
- **Top Industries:** Financial Services, Education Management
- **Company Size:** 55% Medium, 27% Small

#### What Do G2 Reviewers Say About WebEngage?

_AI-generated summary from verified user reviews_

##### Pros

- Users find WebEngage's interface **easy to use** , enhancing engagement and streamlining their marketing automation processes.
- Users value the **powerful analytics and segmentation features** of WebEngage, enhancing campaign effectiveness and user insights.
- Users commend the **intuitive journey designer** of WebEngage, streamlining complex marketing workflows effortlessly.
- Users value the **helpful support** from WebEngage, enhancing their marketing automation experience and user engagement.
- Users value the **user-friendly features** of WebEngage, enhancing accessibility and improving engagement through intuitive tools.

##### Cons

- Users find the **learning curve steep** , making it challenging to fully utilize WebEngage's features effectively.
- Users experience **slow performance** with loading segments and dashboard responsiveness, which can be quite inconvenient.
- Users find the **time-consuming loading times** for segments and setups to be quite frustrating and inconvenient.
- Users find **missing features** frustrating, with slow enhancements and inaccessible options behind paywalls affecting their experience.
- Users experience a **steep learning curve** , finding the interface and setup complex for new users to navigate.

#### What Are Recent G2 Reviews of WebEngage?

**["Powerful Customer Engagement and Marketing Automation"](https://www.g2.com/survey_responses/webengage-review-12701689)**

**Rating:** 5.0/5.0 stars

_— Rahul K._

[Read full review](https://www.g2.com/survey_responses/webengage-review-12701689)

**["Events Analytics Makes Retention Insights Seamless"](https://www.g2.com/survey_responses/webengage-review-12981114)**

**Rating:** 4.5/5.0 stars

_— Marmik S._

[Read full review](https://www.g2.com/survey_responses/webengage-review-12981114)

### [MSG91](https://www.g2.com/products/msg91/reviews)

MSG91 is a comprehensive communication platform designed to facilitate seamless interaction between businesses and their customers across multiple channels. By integrating SMS, WhatsApp, email, voice, and advanced marketing automation tools, MSG91 enables organizations to communicate effectively and efficiently, ensuring that messages are delivered promptly and reliably. Targeted at businesses of all sizes, from startups to large enterprises, MSG91 addresses a variety of communication needs. Its versatile features cater to diverse industries, including e-commerce, fintech, healthcare, and technology. Companies can utilize MSG91 for various use cases such as sending one-time passwords (OTPs) for secure logins, providing order updates, and executing personalized marketing campaigns. This all-in-one solution eliminates the need for multiple vendors, allowing businesses to manage their communication strategies from a single, user-friendly dashboard. Key features of MSG91 include robust APIs for SMS, WhatsApp, and email, which facilitate fast and reliable message delivery. The platform's SMS service ensures global reach with dependable performance, while the WhatsApp Business API allows for engaging customer interactions through verified messaging. Additionally, the Email API supports personalized bulk and transactional emails, complete with detailed analytics to track engagement. The Voice API automates calls and reminders, enhancing customer experience without added complexity. Furthermore, the Hello Chatbot offers 24/7 support, handling conversations and lead management across various channels, ensuring that customer inquiries are addressed promptly. MSG91 stands out in the communication landscape due to its commitment to reliability and compliance. With a 99.9% uptime guarantee and adherence to GDPR, TRAI, and Ofcom messaging standards, businesses can trust that their communications are secure and compliant. The platform also offers transparent pricing with a pay-as-you-go model, ensuring that companies only pay for what they use, without hidden fees. Additionally, MSG91 provides dedicated human support, ensuring that users have access to assistance whenever needed. In a rapidly evolving digital landscape, MSG91 not only focuses on message delivery but also on enhancing customer experiences through intelligent automation and real-time analytics. By leveraging these capabilities, businesses can foster meaningful connections with their customers, driving engagement and growth. With over a decade of experience, MSG91 combines Indian innovation with global reliability, making it a trusted partner for thousands of brands looking to optimize their communication strategies.

**Average Rating:** 4.5/5.0

**Total Reviews:** 196

#### How Do G2 Users Rate MSG91?

- **Has the product been a good partner in doing business?:** 9.0/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 10.0/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 10.0/10 (Category avg: 8.5/10)
- **Mail Send API:** 10.0/10 (Category avg: 8.9/10)

#### Who Is the Company Behind MSG91?

- **Seller:** [MSG91](https://www.g2.com/sellers/msg91)
- **Company Website:** msg91.com
- **Year Founded:** 2010
- **HQ Location:** Indore, MP
- **Twitter:** @msg91  
2,283 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c7bd8748b46a87de09c72a9032cd919e2f5ab8785274ebcf7a65b3a914dbb49f&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F2709873%2F&secure%5Burl_type%5D=linkedin_company_website)  
36 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Founder, CEO
- **Top Industries:** Computer Software, Information Technology and Services
- **Company Size:** 51% Small, 22% Medium

#### What Do G2 Reviewers Say About MSG91?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **responsive customer support** of MSG91, praising the team's professionalism and helpfulness throughout the process.
- Users find MSG91's **responsive support and ease of integration** particularly beneficial, enhancing their overall experience.
- Users appreciate the **ease of use** of MSG91, enjoying its straightforward APIs and user-friendly dashboard.
- Users appreciate the **easy setup** of MSG91, which is made seamless with excellent customer support and guidance.
- Users commend the **excellent staff support** at MSG91, highlighting professionalism, responsiveness, and helpfulness throughout their experience.

##### Cons

- Users struggle with **dashboard issues** , as the cluttered interface and lack of intuitive reporting hinder usability and efficiency.
- Users find the **lack of clarity** in documentation and dashboard configuration challenging, complicating initial setup and usage.
- Users note that there are occasional **delays** in delivery reports that hinder the overall effectiveness of MSG91.
- Users frequently express concerns about **poor customer support** , making initial setup and configuration challenging.
- Users find the **poor interface design** of MSG91 makes navigation and understanding features challenging.

#### What Are Recent G2 Reviews of MSG91?

**["MSG91: Fast, Dependable Messaging with Easy API Integration"](https://www.g2.com/survey_responses/msg91-review-12604095)**

**Rating:** 5.0/5.0 stars

_— Amber J._

[Read full review](https://www.g2.com/survey_responses/msg91-review-12604095)

**["Reliable, Fast SMS Delivery with Transparent, Reasonable Pricing"](https://www.g2.com/survey_responses/msg91-review-12262112)**

**Rating:** 5.0/5.0 stars

_— Abhinav M._

[Read full review](https://www.g2.com/survey_responses/msg91-review-12262112)

#### What Are G2 Users Discussing About MSG91?

- [How do I use MSG91 API?](https://www.g2.com/discussions/how-do-i-use-msg91-api)
- [Is MSG91 safe?](https://www.g2.com/discussions/is-msg91-safe)
- [Whats is MSG91?](https://www.g2.com/discussions/whats-is-msg91)
- [What is the use of MSG91?](https://www.g2.com/discussions/what-is-the-use-of-msg91)

### [SAP Engagement Cloud (formerly SAP Emarsys)](https://www.g2.com/products/sap-engagement-cloud-formerly-sap-emarsys/reviews)

SAP Engagement Cloud (formerly SAP Emarsys) helps organizations power unique engagement by connecting real-time customer insights with the operational signals that run the business. As part of the SAP Customer Experience (CX) portfolio, Engagement Cloud enables personalized, AI-driven interactions across every channel—turning moments like orders, service events, and loyalty milestones into timely, relevant experiences that build trust, strengthen relationships, and drive growth.

**Average Rating:** 4.2/5.0

**Total Reviews:** 615

#### How Do G2 Users Rate SAP Engagement Cloud (formerly SAP Emarsys)?

- **Has the product been a good partner in doing business?:** 8.5/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 8.4/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 8.0/10 (Category avg: 8.5/10)
- **Mail Send API:** 8.0/10 (Category avg: 8.9/10)

#### Who Is the Company Behind SAP Engagement Cloud (formerly SAP Emarsys)?

- **Seller:** [SAP](https://www.g2.com/sellers/sap)
- **Company Website:** www.sap.com
- **Year Founded:** 1972
- **HQ Location:** Walldorf
- **Twitter:** @SAP  
297,052 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=8fd712dbd816fadfc039a60dcf8c1a3d6a48469756075586fa0be3da7e4b74d7&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsap%2F&secure%5Burl_type%5D=linkedin_company_website)  
141,955 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** CRM Manager, Marketing Manager
- **Top Industries:** Retail, Apparel & Fashion
- **Company Size:** 49% Medium, 22% Small

#### What Do G2 Reviewers Say About SAP Engagement Cloud (formerly SAP Emarsys)?

_AI-generated summary from verified user reviews_

##### Pros

- Users appreciate the **ease of use** in SAP Emarsys, allowing for quick and efficient campaign management.
- Users value the **automation features** of SAP Emarsys, enhancing campaign efficiency while maintaining a personal touch.
- Users appreciate the **user-friendly interface** of SAP Emarsys, enabling easy campaign setups and effective CRM strategies.
- Users value the **helpful support team** of SAP Engagement Cloud, enhancing their experience and campaign effectiveness.
- Users appreciate the **highly personalized customer interactions** enabled by SAP Emarsys, enhancing their CRM strategies effectively.

##### Cons

- Users report **missing features** in SAP Engagement Cloud, finding the new segmentation overview less intuitive and lacking essential functionality.
- The **learning curve** for SAP Engagement Cloud can be overwhelming, requiring extensive training and support for users.
- Users find the **difficult learning** curve overwhelming, requiring extensive training and support to navigate the platform.
- Users find the **limited features** of SAP Engagement Cloud challenging, complicating the overall user experience and learning process.
- Users find SAP Emarsys to have a **not intuitive** interface, making initial setup and learning challenging.

#### What Are Recent G2 Reviews of SAP Engagement Cloud (formerly SAP Emarsys)?

**["Effortless Campaign Management, But Needs More Integrations"](https://www.g2.com/survey_responses/sap-engagement-cloud-formerly-sap-emarsys-review-13184092)**

**Rating:** 5.0/5.0 stars

_— Ayush b._

[Read full review](https://www.g2.com/survey_responses/sap-engagement-cloud-formerly-sap-emarsys-review-13184092)

**["Powerful Marketing Automation with strong personalization capabilities"](https://www.g2.com/survey_responses/sap-engagement-cloud-formerly-sap-emarsys-review-13130288)**

**Rating:** 5.0/5.0 stars

_— Supraja B._

[Read full review](https://www.g2.com/survey_responses/sap-engagement-cloud-formerly-sap-emarsys-review-13130288)

#### What Are G2 Users Discussing About SAP Engagement Cloud (formerly SAP Emarsys)?

- [What is Emarsys used for?](https://www.g2.com/discussions/what-is-emarsys-used-for)

### [SMTP2GO](https://www.g2.com/products/smtp2go/reviews)

A fast and scalable email service provider, for sending transactional and marketing emails and viewing reports on email delivery. Complexities such as reputation monitoring, SPF and DKIM are professionally managed for each customer. Native-English speaking support is available worldwide (agents in the USA, UK, Australia, and New Zealand). Servers are also located around the world, meaning fast connection speeds and network redundancy.

**Average Rating:** 4.7/5.0

**Total Reviews:** 221

#### How Do G2 Users Rate SMTP2GO?

- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 9.4/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 8.8/10 (Category avg: 8.5/10)
- **Mail Send API:** 8.9/10 (Category avg: 8.9/10)

#### Who Is the Company Behind SMTP2GO?

- **Seller:** [SMTP2GO](https://www.g2.com/sellers/smtp2go)
- **Year Founded:** 2006
- **HQ Location:** Christchurch, NZ
- **Twitter:** @smtp2go  
770 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ebcd955c88bdc2c2eb38b18696b8edd98691ea1041e6300335b26416c2739d12&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F18241669%2F&secure%5Burl_type%5D=linkedin_company_website)  
20 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Owner, IT Manager
- **Top Industries:** Information Technology and Services, Computer Software
- **Company Size:** 63% Small, 30% Medium

#### What Do G2 Reviewers Say About SMTP2GO?

_AI-generated summary from verified user reviews_

##### Pros

- Users commend the **efficient email deliverability** of SMTP2GO, praising its reliability and ease of configuration.
- Users commend the **easy customization** of SMTP2GO, ensuring reliable and seamless email solutions for their businesses.
- Users find SMTP2GO's service to be **incredibly easy to configure** , enhancing their email delivery experience significantly.
- Users find the **easy setup** of SMTP2GO highly beneficial for reliable email delivery and client recommendations.
- Users commend SMTP2GO for its **incredible reliability** and ease of configuration in email delivery services.

##### Cons

- Users find SMTP2GO to be **expensive** , especially for high-volume needs, impacting overall value for businesses.
- Users report a **difficult setup** process with SMTP2GO, leading to frustration and confusion during integration.
- Users express frustration over the **lack of clarity** in account suspensions, leading to confusion and financial loss.
- Users express frustration over the **limited features** of SMTP2GO, experiencing complications and lack of essential tools.
- Users notice the **limited templates** offered by SMTP2GO, which restricts customization and usage for email campaigns.

#### What Are Recent G2 Reviews of SMTP2GO?

**["We've been using SMTP2GO for 4 years"](https://www.g2.com/survey_responses/smtp2go-review-10936317)**

**Rating:** 5.0/5.0 stars

_— Verified User in Computer Software_

[Read full review](https://www.g2.com/survey_responses/smtp2go-review-10936317)

**["Fairly solid service with decent support"](https://www.g2.com/survey_responses/smtp2go-review-805432)**

**Rating:** 4.5/5.0 stars

_— Nathan L._

[Read full review](https://www.g2.com/survey_responses/smtp2go-review-805432)

#### What Are G2 Users Discussing About SMTP2GO?

- [What is SMTP2GO used for?](https://www.g2.com/discussions/smtp2go-what-is-smtp2go-used-for) - 1 comment
- [What does SMTP2GO do?](https://www.g2.com/discussions/what-does-smtp2go-do) - 1 comment
- [How do I configure smtp2go?](https://www.g2.com/discussions/how-do-i-configure-smtp2go) - 2 comments
- [Is smtp2go safe?](https://www.g2.com/discussions/is-smtp2go-safe)
- [What is smtp2go used for?](https://www.g2.com/discussions/what-is-smtp2go-used-for) - 3 comments

### [Courier](https://www.g2.com/products/courier/reviews)

Courier is notification infrastructure for customer messaging, built for humans and AI agents. It sits between your app and every channel you send on: email, SMS, push, in-app inbox, chat, and webhooks. You send one request, and Courier works out where it goes, what it looks like, and whether the user wanted it at all. Teams use it for the messages a product has to send: onboarding, alerts, receipts, reminders, and account notices. You keep the providers you already pay for. Courier is the layer above them. • Design a message once and it adapts to each channel it goes out on, whether you build it in the visual editor or manage it as code. • Journeys handle the sequencing: waits, batching, digests, and branching on what someone does or ignores. • Add an in-app inbox to your web and mobile apps without building one from scratch. • Users set their own channel and topic preferences, so you are not fielding requests to turn things off. • When a provider fails, Courier fails over to another, and every send lands in one log with its delivery status. Everything in the product is on the API, so the same template or journey works however your team wants to build it: in the visual editor, as code, or handed to an AI agent through Courier's MCP server. Courier connects to 50+ providers, including SendGrid, Amazon SES, Twilio, Firebase, and Slack, and bills per message sent at one rate on every channel, with no per-seat fees. The free tier covers 10,000 messages a month. Twilio, Trusted Health, and Nav run their customer messages on Courier. Founded in 2019 in San Francisco, Courier came out of Y Combinator and is backed by GV, Bessemer Venture Partners, Matrix Partners, Twilio, and Slack Fund.

**Average Rating:** 4.5/5.0

**Total Reviews:** 59

#### How Do G2 Users Rate Courier?

- **Has the product been a good partner in doing business?:** 9.7/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 9.4/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 8.3/10 (Category avg: 8.5/10)
- **Mail Send API:** 9.3/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Courier?

- **Seller:** [Courier](https://www.g2.com/sellers/courier)
- **Year Founded:** 2019
- **HQ Location:** San Francisco, California
- **Twitter:** @trycourier  
1,424 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=38eb6c501c2b6008361e3176c33286ba5d057be99718d4e3957778a9660f1577&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Ftrycourier%2F&secure%5Burl_type%5D=linkedin_company_website)  
1,184 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Software Engineer
- **Top Industries:** Computer Software, Information Technology and Services
- **Company Size:** 75% Small, 22% Medium

#### What Do G2 Reviewers Say About Courier?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **ease of use** in Courier, particularly for creating dynamic emails effortlessly with drag and drop functionality.
- Users praise the **excellent customer support** of Courier, appreciating the numerous contact options for assistance.
- Users appreciate the **dynamic notification configuration** in Courier, enhancing user experience with customizable recipient options.
- Users love the **personalization features** of Courier, enabling them to easily create dynamic emails with drag and drop design.
- Users love the **drag and drop design** feature for creating dynamic emails effortlessly with Courier.

##### Cons

- Users express frustration over **API integration issues** , limiting connections to social media services like Instagram and Snapchat.
- Users find **customization difficult** , as achieving the highest level of personalization is a challenging experience.
- Users express concern over **integration issues** as Courier lacks options for connecting to various social media platforms.
- Users find **limited customization** frustrating, despite the helpful drag and drop feature of the Courier product.
- Users express concern over the **missing integration options** with various social media platforms, limiting functionality.

#### What Are Recent G2 Reviews of Courier?

**["A Developer's API for Easy Design and notification with Courier"](https://www.g2.com/survey_responses/courier-review-10035503)**

**Rating:** 5.0/5.0 stars

_— Shiva A._

[Read full review](https://www.g2.com/survey_responses/courier-review-10035503)

**["This is a great platform for sending noficaitons in a nice easy to implememt way."](https://www.g2.com/survey_responses/courier-review-10832638)**

**Rating:** 4.0/5.0 stars

_— Evgeniy P._

[Read full review](https://www.g2.com/survey_responses/courier-review-10832638)

#### What Are G2 Users Discussing About Courier?

- [What are the advantages of courier services?](https://www.g2.com/discussions/what-are-the-advantages-of-courier-services)
- [What services do couriers provide?](https://www.g2.com/discussions/what-services-do-couriers-provide) - 2 comments
- [What is a courier software?](https://www.g2.com/discussions/what-is-a-courier-software)
- [What are the features of courier service?](https://www.g2.com/discussions/what-are-the-features-of-courier-service)

### [Mailgun](https://www.g2.com/products/mailgun/reviews)

150,000+ companies. 400 billion emails a year. 99.99% uptime — backed by SLA Mailgun is the full-stack email infrastructure platform developers and marketers trust to send, test, validate, and improve deliverability at scale. One platform covers the entire email lifecycle: preview and fix rendering issues before you send, clean your lists in real time, fire emails via API at any volume, and surface deliverability problems with AI before they cost you. SOC 2 Type I & II, HIPAA, GDPR, ISO 27001 certified. Trusted by Microsoft, Lyft, and American Express. Part of Sinch, the global leader in cloud communications.

**Average Rating:** 4.2/5.0

**Total Reviews:** 314

#### How Do G2 Users Rate Mailgun?

- **Has the product been a good partner in doing business?:** 8.7/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 8.9/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 8.5/10 (Category avg: 8.5/10)
- **Mail Send API:** 9.3/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Mailgun?

- **Seller:** [Sinch](https://www.g2.com/sellers/sinch)
- **Company Website:** www.sinch.com
- **Year Founded:** 2008
- **HQ Location:** Stockholm, Sweden
- **Twitter:** @wearesinch  
3,648 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=cace5faccee1d23b3b7cb182ea577d35191d73b17b8d41b6dfdd2ce1343edaf8&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsinch&secure%5Burl_type%5D=linkedin_company_website)  
4,371 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** CTO, Software Engineer
- **Top Industries:** Information Technology and Services, Computer Software
- **Company Size:** 80% Small, 16% Medium

#### What Do G2 Reviewers Say About Mailgun?

_AI-generated summary from verified user reviews_

##### Pros

- Users appreciate the **ease of use** of Mailgun, enabling quick email handling with minimal code and effort.
- Users value Mailgun's **high reliability** for email delivery, ensuring safe and effective communication without domain issues.
- Users commend Mailgun for its **reliable email deliverability** , ensuring swift and secure communication, crucial for business operations.
- Users appreciate Mailgun's **reliable email delivery** , excellent security, and robust APIs, enhancing overall communication efficiency.
- Users appreciate Mailgun's **powerful API** , simplifying email delivery and integration while enhancing campaign performance and reliability.

##### Cons

- Users find Mailgun **expensive** , struggling with high costs and limitations that hinder effective use of the service.
- Users report **unreliable account security** with Mailgun, facing sudden account blocks and unaddressed spam issues.
- Users face a **steep learning curve** with Mailgun, particularly those lacking technical expertise and seeking budget-friendly solutions.
- Users report severe **missing information** regarding account issues, leading to unprofessional account suspensions and data losses.
- Users report **poor customer support** from Mailgun, facing slow responses and unresolved account issues despite payment.

#### What Are Recent G2 Reviews of Mailgun?

**["Easy Squarespace Integration, Fair Pricing, and Fast Support"](https://www.g2.com/survey_responses/mailgun-review-13068893)**

**Rating:** 5.0/5.0 stars

_— Jairo A._

[Read full review](https://www.g2.com/survey_responses/mailgun-review-13068893)

**["Effortless Email Automation with Top-Notch Deliverability"](https://www.g2.com/survey_responses/mailgun-review-12641409)**

**Rating:** 4.0/5.0 stars

_— Nate H._

[Read full review](https://www.g2.com/survey_responses/mailgun-review-12641409)

#### What Are G2 Users Discussing About Mailgun?

- [What is Mailgun used for?](https://www.g2.com/discussions/mailgun-what-is-mailgun-used-for) - 2 comments
- [How much does mailgun cost?](https://www.g2.com/discussions/how-much-does-mailgun-cost) - 1 comment
- [What is mailgun API?](https://www.g2.com/discussions/what-is-mailgun-api)
- [Is mailgun safe?](https://www.g2.com/discussions/is-mailgun-safe) - 1 upvote
- [What is mailgun used for?](https://www.g2.com/discussions/what-is-mailgun-used-for) - 1 comment

### [Sender.net](https://www.g2.com/products/sender-net/reviews)

Sender helps you connect with people—easily and effectively. Email marketing doesn’t have to be complicated or expensive. With Sender, you get everything you need to stay in touch, grow your audience, and share what matters—without the usual tech headaches. Here’s what makes it great: Easy to use No complicated setups. Just a clean, simple interface that helps you create and send beautiful emails in minutes. Powerful automation Set things up once, and let Sender handle the follow-ups, reminders, and welcomes—so you can focus on other stuff. Create professional-looking newsletters in minutes Stop wasting hours designing emails from scratch. With Sender’s ready-made templates and intuitive drag-and-drop builder, you can craft stunning newsletters effortlessly. Grow your audience Build signup forms, collect subscribers, and keep your list healthy. Stay in the loop with reports See who’s opening, clicking, and engaging with your emails—so you know what’s working and what’s not. Send more for less With one of the most generous free plans out there, you can send up to 15,000 emails/month to 2,500 people—without spending a dime. Made for everyone Whether you're just starting out or already have a growing list, Sender gives you the tools to level up—without needing to be a marketing pro.

**Average Rating:** 4.7/5.0

**Total Reviews:** 263

#### How Do G2 Users Rate Sender.net?

- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 10.0/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 10.0/10 (Category avg: 8.5/10)
- **Mail Send API:** 9.8/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Sender.net?

- **Seller:** [Sender.net](https://www.g2.com/sellers/sender-net)
- **Company Website:** www.sender.net
- **Year Founded:** 2012
- **HQ Location:** Vilnius, LT
- **Twitter:** @SenderNet  
276 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=89a26e08be576ddf3698be884f5a49c7dcbe48815717d73b3058bc6644e8c347&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F10851885%2F&secure%5Burl_type%5D=linkedin_company_website)  
29 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** CEO, Director
- **Top Industries:** Real Estate, Computer Software
- **Company Size:** 68% Small, 32% Medium

#### What Do G2 Reviewers Say About Sender.net?

_AI-generated summary from verified user reviews_

##### Pros

- Users find the **ease of use** of Sender.net invaluable, with quick setups and reliable automation enhancing campaign efficiency.
- Users are impressed by the **incredible customer support** offered by Sender.net, making the onboarding process seamless.
- Users value the **automation features** of Sender.net, ensuring smooth campaign operations and reliable deliverability.
- Users appreciate the **simple interface** of Sender.net, making email campaign creation easy and efficient.
- Users commend Sender.net for its **excellent customer support** , highlighting responsiveness and genuine care from the team.

##### Cons

- Users note a **limited template selection** in Sender.net, though customization options enhance email design flexibility.
- Users find the **template limitations** restrictive, although customization options help create unique email designs.
- Users find the **limited template selection** a drawback, but customize easily for unique, professional designs.
- Users desire more **pre-made templates** , as the current options are limited compared to other services.
- Users note a need for **limited customization** options in Sender.net, wishing for more advanced design flexibility.

#### What Are Recent G2 Reviews of Sender.net?

**["Easy-to-Use Email Marketing Platform with Great Value"](https://www.g2.com/survey_responses/sender-net-review-13193329)**

**Rating:** 5.0/5.0 stars

_— Chris D._

[Read full review](https://www.g2.com/survey_responses/sender-net-review-13193329)

**["Generous Free Plan with Higher Email and Subscriber Limits"](https://www.g2.com/survey_responses/sender-net-review-12955339)**

**Rating:** 4.5/5.0 stars

_— Michael ._

[Read full review](https://www.g2.com/survey_responses/sender-net-review-12955339)

#### What Are G2 Users Discussing About Sender.net?

- [What is Sender.net used for?](https://www.g2.com/discussions/what-is-sender-net-used-for)

### [SparkPost](https://www.g2.com/products/sparkpost/reviews)

SparkPost is the world’s #1 email infrastructure provider and the most performant email delivery service available. Our customers send over 5 trillion messages a year, over 37 percent of the world’s business email. Several SparkPost customers—including the largest social networks—send over a billion emails a day, making us the fastest-growing email delivery service provider on the market. For more than a decade, we’ve developed the leading technology in the email industry and the first email delivery service truly architected for the cloud. From the finely-tuned Momentum MTA to today’s fully elastic cloud email delivery service, we provide our customers with proven highest inbox delivery rates, easy setup and launch, and the most comprehensive analytics and insight. Built on the AWS platform, we give our customers the reliability and scalability they demand—and more. There’s never been a better way to send email. Our technology is powerful, but SparkPost’s most valuable asset is our people—the most talented and experienced email experts in the industry. From deliverability experts to a community of developers to dedicated Technical Account Managers for enterprise customers, our team is there with you every step of the way. Whether you are just starting out building an app; a large, complex enterprise; or somewhere in between, there’s a SparkPost service to match your email delivery needs.

**Average Rating:** 4.0/5.0

**Total Reviews:** 71

#### How Do G2 Users Rate SparkPost?

- **Has the product been a good partner in doing business?:** 7.5/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 8.5/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 8.3/10 (Category avg: 8.5/10)
- **Mail Send API:** 8.9/10 (Category avg: 8.9/10)

#### Who Is the Company Behind SparkPost?

- **Seller:** [SparkPost](https://www.g2.com/sellers/sparkpost-c9ab5338-2592-4c25-a156-b1c658cf1362)
- **HQ Location:** Columbia, Maryland
- **Twitter:** @SparkPost  
13,252 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=72ec7d9421d4ae24fa388fa41738362f3bf4c6ed229ec7f1e447f65ff066d123&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsparkpost%2Fabout&secure%5Burl_type%5D=linkedin_company_website)  
28 employees on LinkedIn®

#### Who Uses This Product?

- **Top Industries:** Internet, Information Technology and Services
- **Company Size:** 49% Small, 27% Medium

#### What Do G2 Reviewers Say About SparkPost?

_AI-generated summary from verified user reviews_

##### Pros

- Users value the **quick and helpful support team** of SparkPost, enhancing their experience with the easy platform.
- Users enjoy the **ease of use** of SparkPost, complemented by a responsive support team for quick assistance.

##### Cons

- Users report delays from CSM and struggle with emails landing in **spam folders** , impacting communication effectiveness.
- Users express frustration with **poor customer support** , particularly regarding delays and spam-related issues.
- Users are frustrated with the **time delays** from CSM and issues in identifying emails landing in spam.

#### What Are Recent G2 Reviews of SparkPost?

**["More likely Product for Email Marketers"](https://www.g2.com/survey_responses/sparkpost-review-8365987)**

**Rating:** 4.5/5.0 stars

_— Manish G._

[Read full review](https://www.g2.com/survey_responses/sparkpost-review-8365987)

**["Effortless Platform with Responsive Support"](https://www.g2.com/survey_responses/sparkpost-review-12064222)**

**Rating:** 4.0/5.0 stars

_— Anuj G._

[Read full review](https://www.g2.com/survey_responses/sparkpost-review-12064222)

#### What Are G2 Users Discussing About SparkPost?

- [What is spark Post app?](https://www.g2.com/discussions/what-is-spark-post-app)
- [How do you use SparkPost?](https://www.g2.com/discussions/how-do-you-use-sparkpost)
- [What is Sparkpostmail?](https://www.g2.com/discussions/what-is-sparkpostmail)
- [What is SparkPost?](https://www.g2.com/discussions/what-is-sparkpost)

### [Click](https://www.g2.com/products/clickdimensions-click/reviews)

Click is the only complete marketing technology solution that is natively integrated with Microsoft Dynamics CRM. Our top-rated marketing automation platform and communication tools create a unified and seamless user experience, ensuring your Sales, Marketing and IT teams are fully aligned and able to work together easily and productively. Providing email, marketing automation, journey builders, web intelligence, lead scoring, web forms, landing pages, SMS messaging, event management, surveys, social media tools and much more, Click offers a comprehensive solution that meets the needs of businesses and organizations of all sizes. Over 3,700 customers across 76 countries trust us to provide the tools they need to drive marketing results. Discover what ClickDimensions can help you achieve. Click – Built to Grow your Business.

**Average Rating:** 4.0/5.0

**Total Reviews:** 293

#### How Do G2 Users Rate Click?

- **Has the product been a good partner in doing business?:** 8.0/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 8.2/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 7.5/10 (Category avg: 8.5/10)
- **Mail Send API:** 7.3/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Click?

- **Seller:** [Click](https://www.g2.com/sellers/click)
- **Year Founded:** 2010
- **HQ Location:** Atlanta, GA
- **Twitter:** @ClickDimensions  
4,918 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=796101a9fb7e6a3b033718af5a393b74080132ba10fda675194e99d4f6d694d7&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F1223882%2F&secure%5Burl_type%5D=linkedin_company_website)  
167 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Marketing Manager, Director of Marketing
- **Top Industries:** Information Technology and Services, Computer Software
- **Company Size:** 47% Medium, 38% Small

#### What Do G2 Reviewers Say About Click?

_AI-generated summary from verified user reviews_

##### Pros

- Users find Click to be **easy to use** , appreciating its straightforward setup and problem-free online shopping experience.
- Users appreciate the **ease of use and extensive features** of Click, enhancing online shopping and business management.
- Users value Click's **user-friendly design** , effective tools, and responsive customer service that enhance team collaboration and efficiency.
- Users value the **responsive customer service** of Click, ensuring prompt solutions whenever issues arise.
- Users praise the **exceptional customer support** of Click, appreciating the prompt solutions available 24/7.

##### Cons

- Users find the **excessive email spam** from Click overwhelming and prefer a more manageable communication approach.
- Users find the **poor notifications** overwhelming and distracting, complicating their ability to tailor communication preferences.
- Users face **complex setup challenges** with Click, leading to frustration and lengthy adjustments for effective communication.
- Users find the **complexity of setup** for Click to be a significant hurdle, especially with integrations.
- Users find the **dependency issues** create a cluttered interface, especially during large project management.

#### What Are Recent G2 Reviews of Click?

**["User-Friendly Marketing Automation That Integrates Smoothly with Microsoft Dynamics 365"](https://www.g2.com/survey_responses/click-review-12378339)**

**Rating:** 4.5/5.0 stars

_— Sunil C._

[Read full review](https://www.g2.com/survey_responses/click-review-12378339)

**["Clean, Easy Navigation with Well-Organized Tasks"](https://www.g2.com/survey_responses/click-review-12817705)**

**Rating:** 4.5/5.0 stars

_— Verified User in Research_

[Read full review](https://www.g2.com/survey_responses/click-review-12817705)

#### What Are G2 Users Discussing About Click?

- [What is ClickDimensions used for?](https://www.g2.com/discussions/what-is-clickdimensions-used-for) - 2 comments, 1 upvote

### [Maropost Marketing Cloud](https://www.g2.com/products/maropost-marketing-cloud/reviews)

When your email software can’t keep up with your marketing goals, it’s time to meet Marketing Cloud. Multichannel marketing software built for fast-growing businesses, Marketing Cloud gives you greater control over your email, SMS, and social media ad campaigns. With Maropost, effortlessly build and segment audiences, customize journeys, personalize communications, and deliver them automatically.

**Average Rating:** 4.4/5.0

**Total Reviews:** 140

#### How Do G2 Users Rate Maropost Marketing Cloud?

- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 9.7/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 9.7/10 (Category avg: 8.5/10)
- **Mail Send API:** 9.3/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Maropost Marketing Cloud?

- **Seller:** [Maropost, Inc](https://www.g2.com/sellers/maropost-inc)
- **Company Website:** www.maropost.com
- **Year Founded:** 2011
- **HQ Location:** Toronto, Canada
- **Twitter:** @Maropost  
21,835 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=56952028fb6b1a7281bed94712903eacd89ca5ba47f9508dad396038c8e7ce62&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F386756%2F&secure%5Burl_type%5D=linkedin_company_website)  
374 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** CEO, Owner
- **Top Industries:** Marketing and Advertising, Health, Wellness and Fitness
- **Company Size:** 68% Small, 27% Medium

#### What Do G2 Reviewers Say About Maropost Marketing Cloud?

_AI-generated summary from verified user reviews_

##### Pros

- Users praise the **ease of use** of Maropost Marketing Cloud, simplifying campaign management and automation.
- Users value the **advanced segmentation and personalization** features of Maropost, enhancing targeted marketing campaigns effectively.
- Users value the **advanced segmentation and personalization** capabilities of Maropost Marketing Cloud for targeted campaigns.
- Users appreciate the **ease of A/B testing** in Maropost, enabling effective campaign targeting and scheduling.
- Users value the **powerful automation** features of Maropost Marketing Cloud, enhancing their campaign efficiency and effectiveness.

##### Cons

- Users express a desire for **copying capabilities** between accounts, highlighting a limitation in Maropost Marketing Cloud.
- Users find the **difficult learning** process for advanced features challenging and time-consuming with Maropost Marketing Cloud.
- Users face **integration issues** with limited third-party support, making it challenging to enhance their marketing efforts.
- Users face challenges due to the **limited third-party integrations** , impacting the overall functionality of Maropost Marketing Cloud.
- Users face a **steeper learning curve** for advanced features in Maropost Marketing Cloud, making it challenging to fully utilize.

#### What Are Recent G2 Reviews of Maropost Marketing Cloud?

**["Maropost Marketing Cloud – Quick Review"](https://www.g2.com/survey_responses/maropost-marketing-cloud-review-11020302)**

**Rating:** 4.5/5.0 stars

_— shubh b._

[Read full review](https://www.g2.com/survey_responses/maropost-marketing-cloud-review-11020302)

**["Maropost is a top email marketing platform for my clients we serve."](https://www.g2.com/survey_responses/maropost-marketing-cloud-review-9928401)**

**Rating:** 5.0/5.0 stars

_— justin f._

[Read full review](https://www.g2.com/survey_responses/maropost-marketing-cloud-review-9928401)

#### What Are G2 Users Discussing About Maropost Marketing Cloud?

- [What is Maropost Marketing Cloud used for?](https://www.g2.com/discussions/what-is-maropost-marketing-cloud-used-for) - 1 comment

### [Sweego](https://www.g2.com/products/sweego/reviews)

Sweego is a multi-channel notification platform that enables application developers to send, receive, and process communications via email and SMS through a unified API. It provides infrastructure and tooling to integrate transactional messaging and bidirectional email workflows directly into software applications. Sweego is a type of communication platform as a service (CPaaS) solution that helps developers manage transactional notifications (such as account confirmations, alerts, and system messages) and integrate email-based interactions into their systems. It is designed for backend engineers, product teams, and SaaS builders who require programmable messaging capabilities and event-driven architectures. The platform supports both outbound and inbound communication flows. Developers can send emails and SMS messages using a unified REST API, while also receiving incoming emails that are parsed and forwarded as structured JSON payloads via webhooks. This enables use cases such as automated customer support ingestion, email-to-application workflows, and system-triggered processing pipelines. Sweego is positioned as a European-based solution, with infrastructure aligned with GDPR requirements, making it relevant for organizations with data residency and compliance constraints within the European Union. Key features and capabilities include: - Unified REST API: A single API interface to manage both email and SMS delivery, reducing integration complexity across communication channels. - Inbound Email Routing: Ability to receive emails, extract structured data, and forward it to applications via webhooks for automated processing. - Webhook Event System: Real-time event notifications (delivery, bounce, engagement) that enable monitoring, automation, and system synchronization. - Template and Brand Management: Tools to manage message templates and sender identities, supporting consistent communication formatting and branding. - Analytics and Logs: Access to delivery metrics, logs, and message-level data for debugging, performance monitoring, and operational visibility. Sweego is typically used in SaaS platforms, transactional notification systems, and applications requiring reliable communication channels combined with programmatic control. It fits into architectures where messaging is tightly coupled with application logic and event-driven workflows.

**Average Rating:** 4.8/5.0

**Total Reviews:** 18

#### How Do G2 Users Rate Sweego?

- **Has the product been a good partner in doing business?:** 9.7/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 9.3/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 9.3/10 (Category avg: 8.5/10)
- **Mail Send API:** 9.8/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Sweego?

- **Seller:** [Sweego](https://www.g2.com/sellers/sweego)
- **HQ Location:** Lille, FR
- **Twitter:** @Sweego\_io  
34 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=c830a461c41674a35d9759bb244a5707872635cd1c42ec01abe1cf3c40cb0f2c&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsweego-io&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** CTO
- **Company Size:** 72% Small, 11% Medium

#### What Do G2 Reviewers Say About Sweego?

_AI-generated summary from verified user reviews_

##### Pros

- Users find Sweego's **ease of use** exceptional, appreciating its straightforward setup and seamless integration.
- Users find the **easy setup** of Sweego straightforward, enabling seamless integration with various platforms effortlessly.
- Users commend Sweego for its **excellent customer support** , noting their fast, accommodating assistance and professionalism.
- Users appreciate the **fast and reliable service** of Sweego, noting its intuitive features and excellent customer support.
- Users appreciate the **fast and reliable service** of Sweego, making it a trusted partner for communications.

##### Cons

- Users experience some **downtime issues** , but appreciate the team's quick response in resolving them.
- Users find the **email integration frustrating** , which detracts from their overall experience with Sweego.
- Users find the **email issues** with Sweego frustrating and believe it hampers their overall experience.
- Users find the **email limitations** of Sweego frustrating, impacting their overall experience with the platform.
- Users find Sweego **expensive** , questioning if the cost justifies the service quality provided.

#### What Are Recent G2 Reviews of Sweego?

**["Excellent deliverability and responsive support with Sweego"](https://www.g2.com/survey_responses/sweego-review-12028407)**

**Rating:** 4.5/5.0 stars

_— Dominique J._

[Read full review](https://www.g2.com/survey_responses/sweego-review-12028407)

**["GDPR Compliance and Responsive Support, Perfect for Transactional Emails"](https://www.g2.com/survey_responses/sweego-review-12605624)**

**Rating:** 5.0/5.0 stars

_— Romain F._

[Read full review](https://www.g2.com/survey_responses/sweego-review-12605624)

### [HelpCrunch](https://www.g2.com/products/helpcrunch/reviews)

HelpCrunch is an AI customer service platform for your Support, Sales, and Marketing. All in one. Scale customer communications with AI in all channels while keeping it personal and controllable. The platform combines AI Agents and AI chatbots, omnichannel live chat and shared inbox, knowledge base, and marketing+sales automation tools. Try HelpCrunch for free for 14 days and see how AI can resolve up to 80% of customer questions. 🧠 AI Agents Not your typical chatbot. Not just ChatGPT. Trained exclusively on your content and fully under your control. ⏵ Save time, reduce workload – automatically handle up to 80% of customer questions. ⏵ Scale without hiring – create multiple agents for different products, workflows, or tasks. ⏵ Be everywhere your customers are – live chat, iOS/Android, Facebook, Instagram, WhatsApp, Telegram, Viber. ⏵ Reliable answers only – near-zero hallucinations; anything missing gets routed to your team. ⏵ Handle complexity effortlessly – multi-part questions, follow-ups, topic changes. ⏵ Automate smarter – add AI Agents into chatbot flows for flexible, context-aware automation. 🤖 No-Code AI Chatbots Build custom AI journeys to automate replies, tagging, routing. Works in all channels, zero coding needed. 💬 Live Chat & Multichannel Inbox Manage conversations from website, email, in-app widget, messengers, and social in a single inbox. Assign chats, add tags, track history, and keep context clear across your team. 📚 Knowledge Base
 Build a self-service help center with SEO-friendly articles, categories, and search. Reduce tickets while giving customers 24/7 access to answers. 📧 Email & Campaigns
 Send one-off newsletters, automated onboarding sequences, or targeted campaigns. Segment users by behavior and deliver the right message at the right time. 🎯 Popups & Auto Messages
 Trigger personalized chat messages or popups based on visitor behavior – engage leads instantly, promote offers, and drive conversions. 📊 Analytics & Performance Track AI deflection rates, CSAT, first response times, workload, hours saved by automation, and more. HelpCrunch gives you visibility into both human and AI support. 😉 Why HelpCrunch?
 ⏵ Multichannel by design: web, mobile, messengers, email, and social.
 ⏵ All-in-one: support, marketing automation, and lightweight CRM in one tool.
 ⏵ Scales with your business, from startups to enterprises. ⏵ No-code setup in minutes.
Free migration from other tools. Make service your competitive advantage with HelpCrunch – the secret behind more efficient teams, without extra headcount.

**Average Rating:** 4.7/5.0

**Total Reviews:** 233

#### How Do G2 Users Rate HelpCrunch?

- **Has the product been a good partner in doing business?:** 9.6/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 9.4/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 9.2/10 (Category avg: 8.5/10)
- **Mail Send API:** 9.7/10 (Category avg: 8.9/10)

#### Who Is the Company Behind HelpCrunch?

- **Seller:** [HelpCrunch](https://www.g2.com/sellers/helpcrunch)
- **Year Founded:** 2016
- **HQ Location:** Palo Alto, CA
- **Twitter:** @HelpCrunchCom  
334 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=8aebc5e3398081e213240c2e4cdcaf544259de0d31f77d3f268c72801962e49c&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F4846760%2F&secure%5Burl_type%5D=linkedin_company_website)  
18 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** CEO, Founder
- **Top Industries:** Computer Software, Information Technology and Services
- **Company Size:** 83% Small, 15% Medium

#### What Do G2 Reviewers Say About HelpCrunch?

_AI-generated summary from verified user reviews_

##### Pros

- Users benefit from the **ease of use** of HelpCrunch, finding it intuitive and seamless for support management.
- Users appreciate the **comprehensive features** of HelpCrunch, effectively combining live chat, email, and knowledge base management.
- Users value the **helpful features** of HelpCrunch, enhancing communication and engagement with clients effortlessly.
- Users appreciate the **intuitive live chat** of HelpCrunch, enabling immediate client support and seamless communication.
- Users praise the **excellent customer support** of HelpCrunch, noting fast responses and helpful onboarding assistance.

##### Cons

- Users find the **limited customization** options restrictive, wishing for greater flexibility in widgets and templates.
- Users note that the **live chat loads slowly** in some locations, impacting performance and user experience.
- Users experience **chat issues** such as slow loading times and limitations in functionality needing improvement.
- Users find the **pricing high** for small businesses, especially with additional costs for features like the AI editor.
- Users experience **slow loading** times with HelpCrunch, frustrating their interactions and overall site performance.

#### What Are Recent G2 Reviews of HelpCrunch?

**["Affordable and Feature-Rich Chat Solution"](https://www.g2.com/survey_responses/helpcrunch-review-12883421)**

**Rating:** 5.0/5.0 stars

_— Konstantin M._

[Read full review](https://www.g2.com/survey_responses/helpcrunch-review-12883421)

**["Tornado Team Loves HelpCrunch – Essential Live Chat for Our Apps"](https://www.g2.com/survey_responses/helpcrunch-review-12151003)**

**Rating:** 5.0/5.0 stars

_— Tornado D._

[Read full review](https://www.g2.com/survey_responses/helpcrunch-review-12151003)

### [Mailjet](https://www.g2.com/products/mailjet/reviews)

With GDPR-compliant infrastructure and proven deliverability, Mailjet is the best Email Marketing Software & Email API for Teams. Marketers design, deliver, and automate email newsletters and automations, while developers power high-volume transactional email via robust APIs and SMTP relay. Collaborative editing, templates, and approval flows keep teams fast and consistent; advanced segmentation, A/B testing, and analytics drive growth with every send. Built in Europe with privacy-first hosting options, Mailjet helps you reach the inbox at scale without compromising compliance. Connect easily to your stack with native integrations for ecommerce, CRM, and data tools. More than 100,000 customers globally trust Mailjet to deliver critical messages and campaigns. Choose one platform that brings marketers and developers together.

**Average Rating:** 3.9/5.0

**Total Reviews:** 176

#### How Do G2 Users Rate Mailjet?

- **Has the product been a good partner in doing business?:** 7.7/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 9.0/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 8.6/10 (Category avg: 8.5/10)
- **Mail Send API:** 9.2/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Mailjet?

- **Seller:** [Sinch](https://www.g2.com/sellers/sinch)
- **Year Founded:** 2008
- **HQ Location:** Stockholm, Sweden
- **Twitter:** @wearesinch  
3,648 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=cace5faccee1d23b3b7cb182ea577d35191d73b17b8d41b6dfdd2ce1343edaf8&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fsinch&secure%5Burl_type%5D=linkedin_company_website)  
4,371 employees on LinkedIn®
- **Ownership:** SINCH.ST

#### Who Uses This Product?

- **Who Uses This:** CEO, Founder
- **Top Industries:** Marketing and Advertising, Computer Software
- **Company Size:** 72% Small, 20% Medium

#### What Do G2 Reviewers Say About Mailjet?

_AI-generated summary from verified user reviews_

##### Pros

- Users appreciate the **intuitive UI** of Mailjet, making it easy to navigate and use effectively.
- Users highlight Mailjet's **affordability** , valuing its cost-effective pricing without sacrificing essential features.
- Users value the **AI-powered real-time collaboration** in Mailjet, enhancing teamwork and communication effortlessly.
- Users commend Mailjet for its **excellent customer support** , enhancing the overall user experience and satisfaction.
- Users value the **customization options** in Mailjet, enabling effortless creation of personalized email campaigns.

##### Cons

- Users find Mailjet's **limited customization options and sending restrictions** on the free plan frustrating for their needs.
- Users note the **limited options** for customization in Mailjet, impacting flexibility and creativity in email design.
- Users express frustration with **limited templates** in Mailjet, reducing customization options for their email campaigns.
- Users find the **missing features** in Mailjet, such as limited filtering and lack of list merging, frustrating.
- Users face **limitations on the free plan** of Mailjet, including restricted sending limits and fewer email templates.

#### What Are Recent G2 Reviews of Mailjet?

**["Mailjet: Unifying Email with Ease and Precision"](https://www.g2.com/survey_responses/mailjet-review-12870455)**

**Rating:** 5.0/5.0 stars

_— Ramanpreet S._

[Read full review](https://www.g2.com/survey_responses/mailjet-review-12870455)

**["Effortless Setup, Perfect for Small Teams"](https://www.g2.com/survey_responses/mailjet-review-12709129)**

**Rating:** 4.5/5.0 stars

_— Praveenkumar P._

[Read full review](https://www.g2.com/survey_responses/mailjet-review-12709129)

#### What Are G2 Users Discussing About Mailjet?

- [What is Mailjet used for?](https://www.g2.com/discussions/what-is-mailjet-used-for)

### [Act-On](https://www.g2.com/products/act-on/reviews)

Act-On Software is a Marketing Automation Platform that provides solutions to empower marketers to engage marketing targets at every step of the customer lifecycle. Act-On makes customer data actionable so marketers can dream big and build smart, effective marketing automation programs to grow their businesses and generate higher customer lifetime value – all with the fastest time-to-value. Get a Demo: https://act-on.com/demo/ Act-On empowers marketers to: • Grow and expand their businesses at scale through B2B demand generation, B2C sales and transactions, and customer marketing features. Orchestrate and optimize the entire customer journey — from awareness to advocacy — by building continuous, customized engagement that transforms visitors into prospects, prospects into qualified leads, and qualified leads into lifetime customers. • Deliver exceptional brand experiences throughout the customer lifecycle by automating buying journeys, personalizing communications and campaigns, and improving brand affinity and loyalty. Leverage Act-On’s automated capabilities to attract new prospects, engage your contacts, and guide leads toward more frequent and more lucrative purchasing decisions. • Drive measurable product adoption and customer retention through executing comprehensive onboarding and training programs, product adoption and customer retention strategies, and new products and services promotions. From new contacts to loyal partners, you can use Act-On to engage your audience, turn them into brand ambassadors, and keep them coming back for more. With interactive and dynamic reporting and analytics to assess, showcase, and improve performance, the Act-On Platform is designed to deliver growth marketing value for businesses and marketers of any size, shape, location, and scale. Platform features include: • Automated and adaptable buying journeys • Deep integrations with leading CRM systems and web conferencing • Website visitor engagement tracking and intent reporting • Dynamic lead scoring, segmenting, and nurturing • Social media listening, prospecting, publishing, and advocacy • Easy-to-design web forms, landing pages, and email templates • Event-triggered and transactional emailing • Active contact-based pricing for actual usage billing We get marketing. We understand your challenges. And we’re here to help you excel with every customer and every campaign.

**Average Rating:** 4.1/5.0

**Total Reviews:** 1,030

#### How Do G2 Users Rate Act-On?

- **Has the product been a good partner in doing business?:** 8.6/10 (Category avg: 9.0/10)
- **Performance and Reliability:** 7.8/10 (Category avg: 9.1/10)
- **Enterprise Scalability:** 7.4/10 (Category avg: 8.5/10)
- **Mail Send API:** 7.1/10 (Category avg: 8.9/10)

#### Who Is the Company Behind Act-On?

- **Seller:** [Act-On Software](https://www.g2.com/sellers/act-on-software)
- **Company Website:** www.Act-On.com
- **Year Founded:** 2008
- **HQ Location:** Portland, OR
- **Twitter:** @ActOnSoftware  
32,069 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=022b5a2aefeebb976fa06cfe87f32e73d268e1d4a06a1f8e5d10887cc9ab93eb&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F375185%2F&secure%5Burl_type%5D=linkedin_company_website)  
200 employees on LinkedIn®

#### Who Uses This Product?

- **Who Uses This:** Marketing Manager, Marketing Specialist
- **Top Industries:** Marketing and Advertising, Computer Software
- **Company Size:** 49% Medium, 39% Small

#### What Do G2 Reviewers Say About Act-On?

_AI-generated summary from verified user reviews_

##### Pros

- Users highlight the **ease of use** in Act-On, complemented by outstanding support and user-friendly features.
- Users commend Act-On's **top-notch customer support** , highlighting quick responses and valuable resources like webinars and success hours.
- Users highlight the **top-notch email builder** of Act-On, enhancing their marketing strategy with powerful features and device previews.
- Users praise Act-On's **exceptional email management** , with a robust builder and excellent support enhancing overall productivity.
- Users commend Act-On for its **excellent support and constant updates** , enhancing their email marketing experience significantly.

##### Cons

- Users express concerns over **missing features** in Act-On, especially regarding AI tools and email composer capabilities.
- Users find the **user interface unintuitive** , leading to inconsistent experiences and difficulties during implementation.
- Users encounter **email issues** such as limited content reuse and a cumbersome visual experience in Act-On’s email composer.
- Users experience a challenging **learning curve** with Act-On, particularly in navigating its interface and implementation issues.
- Users feel Act-On has **limited features** compared to competitors, hindering efficiency and user experience.

#### What Are Recent G2 Reviews of Act-On?

**["Unified Marketing Solution with Great Support and Pricing"](https://www.g2.com/survey_responses/act-on-review-13175213)**

**Rating:** 5.0/5.0 stars

_— Don B._

[Read full review](https://www.g2.com/survey_responses/act-on-review-13175213)

**["Robust e-marketing platform"](https://www.g2.com/survey_responses/act-on-review-17560)**

**Rating:** 5.0/5.0 stars

_— Sarah O._

[Read full review](https://www.g2.com/survey_responses/act-on-review-17560)

- [‹ Prev‹ Prev](/categories/transactional-email/small-business?order=g2_score#product-list)
- [1](/categories/transactional-email/small-business?order=g2_score#product-list)
- 2
- [3](/categories/transactional-email/small-business?order=g2_score&page=3#product-list)
- [Next ›Next ›](/categories/transactional-email/small-business?order=g2_score&page=3#product-list)

Spotlight Categories

[Chatbots Software](https://www.g2.com/categories/chatbots)

[Product Analytics Software](https://www.g2.com/categories/product-analytics)

[Accounts Payable Automation Software](https://www.g2.com/categories/ap-automation)

[Sales Tax and VAT Compliance Software](https://www.g2.com/categories/sales-tax-and-vat-compliance)

[Email Marketing Software](https://www.g2.com/categories/email-marketing)

Similar Categories

- [Account-Based Marketing](/categories/account-based-marketing)
- [Affiliate Marketing](/categories/affiliate-marketing)
- [App Store Optimization](/categories/app-store-optimization)
- [Audience Intelligence Platforms](/categories/audience-intelligence-platforms)
- [B2B Services Review Platforms](/categories/b2b-services-review-platforms)

- [Blogger Outreach](/categories/blogger-outreach)
- [Book Marketing Tools](/categories/book-marketing-tools)
- [Brand Intelligence](/categories/brand-intelligence)
- [Consumer Insights Platforms](/categories/consumer-insights-platforms)
- [Consumer Video Feedback](/categories/consumer-video-feedback)

- [Content Curation](/categories/content-curation)
- [Content Marketing](/categories/content-marketing)
- [Conversational Marketing](/categories/conversational-marketing)
- [Conversion Rate Optimization Tools](/categories/conversion-rate-optimization-tools)
- [Customer Data Platform (CDP)](/categories/customer-data-platform-cdp)

[Browse Transactional Email Themes](/categories/transactional-email/themes)

 ![Yukta Rustagi](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Yukta Rustagi")
YR

Researched and written by [Yukta Rustagi](https://research.g2.com/insights/author/yukta-rustagi)

Updated 

Products classified in the overall Transactional Email category are similar in many regards and help companies of all sizes solve their business problems. However, small business features, pricing, setup, and installation differ from businesses of other sizes, which is why we match buyers to the right Small Business Transactional Email to fit their needs. Compare product ratings based on reviews from enterprise users or connect with one of G2's buying advisors to find the right solutions within the Small Business Transactional Email category.

In addition to qualifying for inclusion in the Transactional Email Software category, to qualify for inclusion in the Small Business Transactional Email Software category, a product must have at least 10 reviews left by a reviewer from a small business.

Show More