# Best Transactional Email Software - Page 8

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

**Total Products under this Category:** 137

### 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:** Turbosmtp (+1.65%) - Among all products in this category, Turbosmtp recorded the largest rating increase compared to last month

_Last updated: August 05, 2026_

## How Does G2 Rank Transactional Email Software Products?

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

- 30 Analysts and Data Experts
- 31,800+ Authentic Reviews
- 137+ 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=2764&focus%5B%5D=3435&focus%5B%5D=3644&focus%5B%5D=15592&focus%5B%5D=1759&focus%5B%5D=56231&focus%5B%5D=159850)

Highlighted products: Customer.io, Amazon Simple Email Service (Amazon SES), Brevo Marketing Platform, Omnisend, Email API, Dotdigital, MoEngage, and Zoho ZeptoMail.

Underlying data: [Grid® JSON](https://www.g2.com/categories/transactional-email/grids.json?focus%5B%5D=customer-io&focus%5B%5D=amazon-simple-email-service-amazon-ses&focus%5B%5D=brevo-marketing-platform&focus%5B%5D=omnisend&focus%5B%5D=netcore-private-limited-email-api&focus%5B%5D=dotdigital&focus%5B%5D=moengage&focus%5B%5D=zoho-zeptomail)

**Sponsored**

### Octopus Deploy

Octopus Deploy sets the standard for Continuous Delivery (CD), empowering software teams to deliver value in an agile way. Globally, more than 4,000 organizations rely on our Continuous Delivery, GitOps, and release orchestration solutions to deliver swift value to their customers. At Octopus, we create happy deployments, and by extension, happy software teams. Founded in 2012, our vision is for all software teams to look forward to deployment time; to be excited about seeing their changes deployed and used by their customers. We want them to deploy more and more frequently, and to feel 100% confident it will just work. Octopus efficiently orchestrates software delivery across multi-cloud, Kubernetes, data centers, and hybrid environments, whether containerized modern apps or heritage applications. With governance, risk, and compliance (GRC) at its core, Octopus supports Platform Engineering teams in their mission to provide a superior developer experience (DevEx). Octopus also actively contributes to the developer community with open-source projects. - Effortless scaling - Deploy consistently, quickly, and without duplicating effort to thousands of locations or customers. Tenants let you use one deployment process for thousands of customers. See all your deployments at a glance on a single dashboard. - Faster deployments - Deploy faster and more frequently to thousands of application hosts. Use one deployment process consistently across environments. Reduce time between build and deployment by automatically promoting releases. Use the deployment strategy that works for you, like rolling, blue/green, or canary. - Reduce risk - Reduce deployment failure rate and mean time to recovery with automation built-in. Step timeouts and retries reduce manual intervention, while guided failure mode lets you keep deployments moving when needed. Our Insights feature reveals your DevOps performance and areas that need attention based on the 4 key DORA metrics. - Improve DevEx - Simple deployments empower teams and let developers focus on building new features. Create processes easily with our friendly UI and over 500 step templates, or use command lines and scripts. Runbooks automate routine and emergency operations tasks, freeing your teams for more crucial work. - Increase security - Built-in, flexible features to manage your security and compliance requirements. Use role-based access control (RBAC) to limit what users can do in Octopus. Configure ITSM approvals and OpenID Connect with popular providers for secure, compliant deployments. Handle complex software delivery at any scale with Octopus Deploy.

[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=2026-08-09T12%3A38%3A18Z&secure%5Bdisplayable_resource_id%5D=312&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=retargeted_product&secure%5Bplacement_resource_ids%5D%5B%5D=6646&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=6646&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%3Fpage%3D8%26via%3Dmanu&secure%5Btoken%5D=505f8973051bb3d7f648b70f91881cbffda2ebb09c26dfcfbdb104fdc273c6dc&secure%5Burl%5D=https%3A%2F%2Foctopus.com%2Ffree%3Futm_source%3Dg2%26utm_medium%3Dpaid-display%26utm_campaign%3Dglobal-032026-g2-clicks%26utm_content%3Dfree-tier%26utm_term%3D&secure%5Burl_type%5D=free_trial)

### [Campaign by Dolist](https://www.g2.com/products/campaign-by-dolist/reviews)

Campaign by Dolist is an email and SMS activation platform designed to manage both marketing campaigns and transactional messaging within a single environment. It enables organizations to centralize data, automate communications, and deliver legitimate messages at scale while prioritizing deliverability, security, and regulatory compliance. Campaign supports a wide range of use cases, including: - Email and SMS marketing campaigns (newsletters, promotions, announcements) - Transactional and notification messages triggered in real time - Marketing automation workflows and customer journeys - Contact data management, segmentation, and preference handling - Consent and unsubscribe management aligned with GDPR requirements For transactional messaging, Campaign can be connected to existing systems to trigger messages via API and/or SMTP relay, with access to delivery and performance data for monitoring and optimization. The platform is designed with a strong focus on deliverability and sender reputation, supported by monitoring mechanisms and best practices applied at both infrastructure and messaging levels. Campaign is developed and hosted in France, ensuring strong data sovereignty, GDPR-by-design capabilities, and high standards of data security. It integrates with existing business tools and systems using standard connectivity methods such as REST APIs, webhooks, and secure data exchanges.

**Average Rating:** 4.5/5.0

**Total Reviews:** 1

#### Who Is the Company Behind Campaign by Dolist?

- **Seller:** [Dolist](https://www.g2.com/sellers/dolist)
- **Year Founded:** 2000
- **HQ Location:** Pessac, France
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=6ab146a5d22349fadf2997ab1b59fdf866a8703f8552d21e56f4dd04af714098&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fdolist-net%2F&secure%5Burl_type%5D=linkedin_company_website)  
64 employees on LinkedIn®
- **Ownership:** Privately held
- **Phone:** 05 57 26 25 70

#### Who Uses This Product?

- **Company Size:** 100% Small

#### What Are Recent G2 Reviews of Campaign by Dolist?

**["best online email marketing online system provided in the market"](https://www.g2.com/survey_responses/campaign-by-dolist-review-5117380)**

**Rating:** 4.5/5.0 stars

_— Jagan K._

[Read full review](https://www.g2.com/survey_responses/campaign-by-dolist-review-5117380)

#### What Are G2 Users Discussing About Campaign by Dolist?

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

### [Closum](https://www.g2.com/products/closum/reviews)

Plataforma de Marketing e Comunicações Digitais. Ajudamos a comunicar com a sua audiência de forma segmentada e personalizada — em escala. Capte novos contactos através de Landing Pages e Pop-ups com formulários personalizáveis, e promova o seu negócio através de Newsletters ou Campanhas em massa de SMS.

**Average Rating:** 4.8/5.0

**Total Reviews:** 2

#### How Do G2 Users Rate Closum?

- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 9.0/10)

#### Who Is the Company Behind Closum?

- **Seller:** [Closum](https://www.g2.com/sellers/closum)
- **Year Founded:** 2016
- **HQ Location:** Vila Nova de Famalicão, PT
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=e55b40f8bd7f280fda690e56c16f298ff10f8f205ddb10ac98a114b79eaa350c&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fclosum&secure%5Burl_type%5D=linkedin_company_website)  
9 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Small

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

**["Closum Review"](https://www.g2.com/survey_responses/closum-review-8163818)**

**Rating:** 4.5/5.0 stars

_— Nambaru M._

[Read full review](https://www.g2.com/survey_responses/closum-review-8163818)

**["Honest review Of Closum"](https://www.g2.com/survey_responses/closum-review-8164418)**

**Rating:** 5.0/5.0 stars

_— Ajay S._

[Read full review](https://www.g2.com/survey_responses/closum-review-8164418)

### [Codermails](https://www.g2.com/products/codermails/reviews)

Codermails is a reliable SMTP service provider offering high-performance email delivery solutions. Known for its robust infrastructure, Codermails ensures fast, secure, and efficient email transmission for businesses of all sizes. Their service supports bulk email sending, transactional emails, and personalized campaigns, making it ideal for marketing and communication needs. Codermails is user-friendly, with easy integration into existing systems and extensive API support. The company prioritizes deliverability, with features like advanced analytics, bounce management, and real-time reporting to maximize email campaign success. Competitive pricing and exceptional customer support make Codermails a top choice for SMTP services.

#### Who Is the Company Behind Codermails?

- **Seller:** [Codermails](https://www.g2.com/sellers/codermails)
- **Year Founded:** 2018
- **HQ Location:** Delhi, IN
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5f7aa134e6aee1fa611839d594fbdad5670c38b6322fa2bf984e67038897a0d3&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcodermails-tech&secure%5Burl_type%5D=linkedin_company_website)  
2 employees on LinkedIn®

### [CritSend](https://www.g2.com/products/critsend/reviews)

CritSend is a SMTP relay for developers.

#### Who Is the Company Behind CritSend?

- **Seller:** [CritSend](https://www.g2.com/sellers/critsend)
- **Year Founded:** 2007
- **HQ Location:** Paris, FR
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=37278f921b79f257919271b2cf8a588c7bee814a84099a3e26d23b6800a4eca0&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fcritsend&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Dead Simple Email](https://www.g2.com/products/dead-simple-email/reviews)

Email infrastructure for AI agents. Send, receive, and automate — all through a clean REST API. No SMTP configuration, no IMAP headaches. Start free with 5 inboxes.

#### Who Is the Company Behind Dead Simple Email?

- **Seller:** [Dead Simple Email](https://www.g2.com/sellers/dead-simple-email)
- **Year Founded:** 2026
- **HQ Location:** Phoenix, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=04f1c9d2446f4db9351e07af277a591a5bcd78d14e85501e472f88d786ee9ee0&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fdead-simple-email%2F&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [DreamCampaigns](https://www.g2.com/products/dreamcampaigns/reviews)

DreamCampaigns all-in-one email & SMS marketing tools enable you to send super personalized, optimized, responsive & beautiful emails & text campaigns in just a few clicks. Trigger personalized emails & SMS based on customer actions and send automated follow-ups. Respond to customer behavior and boost calls to action with messages directly on your site. Grow your business with features like unlimited previews, email Deliverability Score, automated segmentation and marketing automation.

**Average Rating:** 3.5/5.0

**Total Reviews:** 1

#### Who Is the Company Behind DreamCampaigns?

- **Seller:** [DreamCampaigns](https://www.g2.com/sellers/dreamcampaigns)
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Small

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

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

### [Engage](https://www.g2.com/products/engage-messaging-engage/reviews)

Engage is a marketing tool that helps businesses improve customer engagement and retention through personalized messages.

**Average Rating:** 4.9/5.0

**Total Reviews:** 5

#### How Do G2 Users Rate Engage?

- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 9.0/10)

#### Who Is the Company Behind Engage?

- **Seller:** [Engage Messaging](https://www.g2.com/sellers/engage-messaging)
- **HQ Location:** Lagos, NG
- **Twitter:** @engage\_so  
1,915 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=df8246ab4ede04a8ea43fbd2a59f7d908a9a081f2c2f14a00b5a733dd9f6b4a0&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fengage-messaging%2F&secure%5Burl_type%5D=linkedin_company_website)  
4 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 20% Large, 20% Medium

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

**["Best in business."](https://www.g2.com/survey_responses/engage-review-8586456)**

**Rating:** 4.5/5.0 stars

_— shubham s._

[Read full review](https://www.g2.com/survey_responses/engage-review-8586456)

**["Engage messaging all the way"](https://www.g2.com/survey_responses/engage-review-6966956)**

**Rating:** 5.0/5.0 stars

_— Kehinde D._

[Read full review](https://www.g2.com/survey_responses/engage-review-6966956)

### [IGSendMail](https://www.g2.com/products/igsendmail/reviews)

IGSendMail is an email marketing platform where every paid plan includes unlimited contacts. Instead of per-subscriber billing that scales as your list grows, you pay a flat monthly rate based on send volume — so your cost stays predictable whether you have 500 contacts or 500,000. Every paid plan includes built-in email verification. Verify your list before you send, reduce bounces, and protect your sender reputation — no separate service or additional cost required. Core features: - Drag-and-drop campaign builder with a ready-to-use template library - Unlimited automations on every paid plan — build workflows for welcome sequences, abandoned carts, re-engagement, and more - Advanced list segmentation based on behavior, engagement, tags, and custom fields - A/B testing for subject lines, content, and send times - Real-time campaign analytics with open rates, click-through rates, and revenue tracking - Transactional email support for order confirmations, password resets, and receipts - REST API for custom integrations and programmatic campaign management Plans: Free — 2,500 contacts, 2,000 emails/month. No credit card required. Starter ($19/mo) — Unlimited contacts, 25,000 emails/month, 2,500 verifications. 3 users. Pro ($49/mo) — Unlimited contacts, 100,000 emails/month, 10,000 verifications. 5 users, white-label branding. Business ($99/mo) — Unlimited contacts, 300,000 emails/month, 50,000 verifications. 10 users, dedicated sending IP, SSO. Annual billing saves 20% on all paid plans. Built for businesses outgrowing per-subscriber pricing, first-time senders launching their first campaigns, e-commerce brands optimizing lifecycle email, and agencies managing multiple client accounts.

**Average Rating:** 3.0/5.0

**Total Reviews:** 1

#### Who Is the Company Behind IGSendMail?

- **Seller:** [IGSendMail](https://www.g2.com/sellers/igsendmail)
- **Year Founded:** 2023
- **HQ Location:** Seattle, Washington
- **Twitter:** @igsendmail  
3 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d99005d99588ff95ae4ae88d8205582e7f4a96f2bb479580fef6ce0fb0991cb1&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Figsendmail%2F&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Small

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

_AI-generated summary from verified user reviews_

##### Cons

- Users find the **monthly price very expensive** , but some are still considering its features.

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

indemandly is a conversational marketing tool for business websites & social media.

#### Who Is the Company Behind indemandly?

- **Seller:** [indemandly](https://www.g2.com/sellers/indemandly)
- **Year Founded:** 2018
- **HQ Location:** Wan Chai, HK
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=95a7f94ba1c10e26738e4dd75f744b9b0b8d8f497976ab6fd87d710310c9de3d&secure%5Burl%5D=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Findemandly&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [JangoMail](https://www.g2.com/products/jangomail/reviews)

JangoMail offers a number of features you can use to create high-quality professional looking emails.

**Average Rating:** 5.0/5.0

**Total Reviews:** 1

#### Who Is the Company Behind JangoMail?

- **Seller:** [JangoMail](https://www.g2.com/sellers/jangomail)
- **Year Founded:** 2000
- **HQ Location:** Dayton, OH
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=0c9268a527e9bcbb64d2112e62912c778253854b6649f9ebfca77e6e802d2f06&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F382569%2F&secure%5Burl_type%5D=linkedin_company_website)  
15 employees on LinkedIn®

#### Who Uses This Product?

- **Company Size:** 100% Medium

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

**["JangoMail for life!"](https://www.g2.com/survey_responses/jangomail-review-5134543)**

**Rating:** 5.0/5.0 stars

_— Verified User in Graphic Design_

[Read full review](https://www.g2.com/survey_responses/jangomail-review-5134543)

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

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

### [Leadersend](https://www.g2.com/products/leadersend/reviews)

LeaderSend is transactional email delivery service for web and mobile apps. LeaderSend takes care of your transactional message delivery, while you can focus on your business instead.

#### Who Is the Company Behind Leadersend?

- **Seller:** [Leadersend](https://www.g2.com/sellers/leadersend)
- **HQ Location:** N/A
- **Twitter:** @LeaderSend  
49 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Lettermint](https://www.g2.com/products/lettermint/reviews)

Lettermint is a European-based transactional email service provider that helps businesses ensure their critical emails—like order confirmations, password resets, and notifications—reliably reach their customers' inboxes. Operating entirely within the EU, Lettermint combines GDPR-compliant infrastructure with developer-friendly tools including robust APIs, SDKs, and SMTP relay services. The platform stands out for its commitment to deliverability, privacy-focused analytics, and transparent pricing, making it an ideal choice for European businesses and developers who need a trusted partner for their transactional email needs. With support for multiple domains and scalable plans from free tier to enterprise, Lettermint simplifies email delivery while maintaining the highest standards of data protection and compliance.

#### Who Is the Company Behind Lettermint?

- **Seller:** [Lettermint](https://www.g2.com/sellers/lettermint)
- **Year Founded:** 2025
- **HQ Location:** Zwolle, NL
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=a673093a8f46036e951ba3dc245a1b002fba801edf16fd4451b5166bf5577fde&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Flettermint%2F&secure%5Burl_type%5D=linkedin_company_website)  
2 employees on LinkedIn®

### [Lettr](https://www.g2.com/products/lettr/reviews)

Lettr is a transactional email platform for teams that want reliable sending without building and maintaining email infrastructure. Send via HTTP API or SMTP relay, track delivery and engagement with real-time events (delivered, bounced, delayed, opened, clicked), and debug issues with searchable logs and webhooks. Lettr is focused purely on transactional email; it does not support bulk sending or contact list imports, which keeps deliverability high and the platform focused. Lettr bridges the gap between developer and non-developer teams. Developers integrate once via API or SMTP, then product, design, and marketing teams can manage transactional templates independently using a visual drag-and-drop editor with version history and a draft/publish workflow, so routine copy and design edits never require dev tickets or redeploys. For teams migrating from another provider, Lettr is designed to make the switch straightforward: existing HTML templates can be imported directly, and Laravel teams can be up and running with a one-command setup. The template editor supports dynamic placeholders, HTML import (including React Email output), and multi-language templates. A synced sections feature lets teams update a shared header or footer once and automatically propagate changes across all templates that use it. Part of what sets Lettr apart from most transactional email platforms is its domain controls. Rather than sharing vendor infrastructure for tracking links and hosted assets, teams can configure their own custom tracking domain and custom storage domain, keeping all email touchpoints on-brand and under their own deliverability control. Standard sending domain configuration (CNAME, DKIM, DMARC) and inbound domain support are also included. Enterprise options extend this further with dedicated IP pools and custom rate limits for high-volume senders.

#### Who Is the Company Behind Lettr?

- **Seller:** [Lettr](https://www.g2.com/sellers/lettr)
- **HQ Location:** Prague, Czech Republic
- **Twitter:** @lettr\_com  
16 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7a8ff2de237164d1a73ee98b57f05aea5897096ba37def8475601e5b0fc08ead&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Flettr-com%2F&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Maildocker](https://www.g2.com/products/maildocker/reviews)

Maildocker is a behavioral and transactional email platform. They serve as your email infrastructure to send and track emails in an easy, fast and efficient way.

#### Who Is the Company Behind Maildocker?

- **Seller:** [eCentry](https://www.g2.com/sellers/ecentry)
- **Year Founded:** 1999
- **HQ Location:** Florianópolis, BR
- **Twitter:** @maildocker\_  
70 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b5fcf5956fb008a4cde57f2afc1e56c32f4f2cdbf28d7bcb46dbf34b08ac2b47&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F795786&secure%5Burl_type%5D=linkedin_company_website)  
9 employees on LinkedIn®

### [MailPace](https://www.g2.com/products/mailpace/reviews)

Transactional Email Provider. Independent, privacy-focused, and hosted in the EU

#### Who Is the Company Behind MailPace?

- **Seller:** [MailPace](https://www.g2.com/sellers/mailpace)
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

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[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 October 3, 2024

**Transactional email software** refers to software that sends emails in response to pre-established actions taken by recipients. These products send email notifications in response to users’ actions; some examples include a welcome email after creating a new social media account, an email receipt from an e-commerce transaction, or an email for a new newsletter subscription. Businesses use these tools for automating personalized emails as transactions occur. Teams use transactional email software to track metrics such as emails sent, received, opened, and bounced. Transactional email tools are useful to for customer retention, sales, marketing, and public relation teams. Transactional email software integrates with additional types of software, such as [CRM](https://www.g2.com/categories/crm-related), [email marketing](https://www.g2.com/categories/email-marketing), and[e-commerce products](https://www.g2.com/categories/e-commerce-platform), to maximize the benefits to your business.

To qualify for inclusion in the Transactional Email category, a product must:

- Provide automated email response tools
- Enable emails to be sent automatically as a result of action-based triggers
- Send customized or personalized emails
- Sync with business software such as e-commerce, social media, or other tools
- Provide administration tools to track emails sent and received, as well as their results

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