# Best Email Testing Software for Small Business

  *By [Yukta Rustagi](https://research.g2.com/insights/author/yukta-rustagi)*

   Products classified in the overall Email Testing 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 Email Testing 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 Email Testing category.

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





## Category Overview

**Total Products under this Category:** 47


## Trust & Credibility Stats

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

- 30 Analysts and Data Experts
- 21,900+ Authentic Reviews
- 47+ 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.



---

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### Mailgun

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---

## Top-Rated Products (Ranked by G2 Score)
  ### 1. [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews)
  Trusted by over 500,000 businesses worldwide, Brevo (formerly Sendinblue) is the affordable, all-in-one marketing and CRM stack that helps growing businesses scale faster. It's easy to use and suitable for companies of all sizes. Build lasting customer relationships with Brevo's flexible toolkit. Products range from marketing to sales, chat, and transactional emails. Choose what you need — and only pay for what you use. Here are just some of the things you can do with Brevo: - Run multi-channel marketing campaigns across email, WhatsApp, SMS, web push, and Facebook ads - Trigger transactional emails, SMS, and WhatsApp notifications over Brevo SMTP and APIs - Automate marketing activities to deliver the right message at the right time, and efficiently manage your audience - Reduce the number of marketing and sales apps — and get a full view of customer interactions with tools that talk to each other - Engage customers in real-time and reply to FAQs 24/7 with live chat and chatbot - Track leads, automate tasks, and schedule meetings with the Brevo Sales Platform - Connect your e-commerce store to track web sales and use the Retention analysis to improve your marketing strategy. - Talk to customers anytime, anywhere with Brevo’s cloud-based phone system Learn more and start for free at https://www.brevo.com/products/marketing-platform/ Get a custom quote: https://www.brevo.com/plus/contact/


  **Average Rating:** 4.5/5.0
  **Total Reviews:** 2,416

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.4/10)
- **Performance:** 9.1/10 (Category avg: 9.0/10)
- **Analytics:** 9.0/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Brevo](https://www.g2.com/sellers/brevo)
- **Company Website:** https://www.brevo.com/
- **Year Founded:** 2012
- **HQ Location:** Paris
- **Twitter:** @brevo_official (16,035 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/brevo/ (863 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** CEO, Founder
  - **Top Industries:** Marketing and Advertising, Information Technology and Services
  - **Company Size:** 84% Small-Business, 12% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (314 reviews)
- Features (190 reviews)
- Email Marketing (171 reviews)
- Easy Setup (168 reviews)
- Simple (158 reviews)

**Cons:**

- Missing Features (107 reviews)
- Limited Features (80 reviews)
- Limited Customization (71 reviews)
- Learning Curve (67 reviews)
- Expensive (55 reviews)

  ### 2. [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews)
  Intuit Mailchimp - Email Marketing is a dedicated solution designed to help growing businesses connect with their audience and create impactful email campaigns with ease. Trusted by over 11 million businesses globally, Mailchimp provides tools specifically tailored to meet the needs of companies aiming to drive customer engagement, nurture leads, and foster long-term loyalty through email marketing. This platform is particularly beneficial for small to mid-sized businesses that require an effective means of communication with their customers. Mailchimp's email marketing features empower users to build meaningful relationships while achieving measurable results. Whether launching a new product, sharing company updates, or delivering tailored messaging to specific segments of their audience, Mailchimp simplifies the process, allowing businesses to focus on their core activities. Mailchimp Transactional (formerly Mandrill) is an API-first messaging platform built for reliable delivery at scale. Through a single API, businesses can send critical transactional email and SMS alerts — such as order confirmations, password resets, and shipping notifications — with a 99% average delivery rate and 99.99% uptime. With a median delivery speed of less than one second and infrastructure to support up to 157 billion emails per month, Mailchimp Transactional is built to handle volume from startup to enterprise. Developers benefit from comprehensive SDK repositories, quickstarts, ready-made code examples, and clear error-handling patterns, while marketers can manage transactional email templates with an intuitive in-app editor — no engineering rework required. Key features of Mailchimp include customizable email campaigns that utilize beautiful, pre-designed templates alongside an intuitive drag-and-drop editor. This functionality enables users to craft professional emails that resonate with their brand's voice. Additionally, advanced segmentation and personalization capabilities allow businesses to reach the right audience with targeted messages based on behavior, demographics, or purchase history. This level of personalization enhances engagement and improves the overall effectiveness of campaigns. Mailchimp also offers powerful analytics, providing users with detailed reports and insights to track open rates, click-throughs, and other campaign success metrics. This data-driven approach helps businesses refine their strategies and make informed decisions. Furthermore, seamless integrations with over 300 tools, including CRMs and eCommerce platforms, create a cohesive workflow that enhances operational efficiency. Time-saving automations enable users to set up automated email series, ensuring consistent engagement with new subscribers and re-engagement with existing customers through personalized follow-ups. Overall, Intuit Mailchimp - Email Marketing is designed for users who seek intuitive tools without the complexity often associated with larger marketing platforms. By combining powerful email marketing with enterprise-grade transactional messaging infrastructure, Mailchimp helps businesses unify their email strategy — from campaigns to critical notifications — into a single platform that drives growth and operational efficiency.


  **Average Rating:** 4.3/5.0
  **Total Reviews:** 12,625

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 8.6/10 (Category avg: 8.4/10)
- **Performance:** 9.0/10 (Category avg: 9.0/10)
- **Analytics:** 8.8/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Intuit Mailchimp](https://www.g2.com/sellers/intuit-mailchimp)
- **Company Website:** https://mailchimp.com
- **Year Founded:** 2001
- **HQ Location:** Atlanta, GA
- **Twitter:** @MailChimp (239,030 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/969871/ (1,591 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** Owner, Marketing Manager
  - **Top Industries:** Marketing and Advertising, Non-Profit Organization Management
  - **Company Size:** 72% Small-Business, 22% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (142 reviews)
- Email Marketing (80 reviews)
- Features (69 reviews)
- Easy Creation (58 reviews)
- Templates (55 reviews)

**Cons:**

- Expensive (45 reviews)
- Limited Features (32 reviews)
- Learning Curve (31 reviews)
- Missing Features (23 reviews)
- Limited Customization (22 reviews)

  ### 3. [Reoon Email Verifier](https://www.g2.com/products/reoon-email-verifier/reviews)
  Reoon email verifier is one of the most accurate email validation services that cleans invalid, temporary & unsafe email addresses. Reoon email verifier can verify the most difficult email domains, including Gmail, Yahoo, Microsoft, AOL and Custom Domains with 99% accuracy. With Reoon Email Verifier you can: 1. Verify emails from Gmail, Yahoo, Microsoft, AOL and other domains. 2. Validate email addresses in bulk without sending any emails. 3. Clean up email lists with great accuracy (99%). 4. Detect dynamically changing temporary/disposable addresses. 5. Significantly reduce the bounce rate of email campaigns. 6. Protect the sender's reputation of the domain and server. 7. Verify users' email live during their registration in 0.5 seconds. 8. Ultra-fast email verification system can verify thousands in minutes. Unique things about Reoon Email Verifier: 1. Can detect soft bounces like storage full or account disabled on Gmail etc. 2. Can detect temporary emails dynamically to catch the latest domains. 3. Can verify the most difficult services like Yahoo, AOL and Microsoft. 4. Quick API Validation can verify emails live within 0.5 seconds. 5. Top-class email verification service at an affordable rate. 6. Top-class customer support that is built for customers. Reoon email verifier is a web-based email verification system and the verifications run on Reoon's server. Users can access and use this from any web browser. Reoon takes data privacy very seriously. Users are fully protected with 30 days refund policy.


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 1,011

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 9.5/10 (Category avg: 8.4/10)
- **Performance:** 9.1/10 (Category avg: 9.0/10)
- **Analytics:** 9.3/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 6.6/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Reoon Technology](https://www.g2.com/sellers/reoon-technology)
- **Company Website:** https://www.reoon.com/
- **Year Founded:** 2018
- **HQ Location:** N/A
- **Twitter:** @ReoonTechnology (53 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/reoon/ (4 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** Founder, CEO
  - **Top Industries:** Marketing and Advertising, Computer Software
  - **Company Size:** 91% Small-Business, 4% Mid-Market


#### Pros & Cons

**Pros:**

- Accuracy (193 reviews)
- Ease of Use (191 reviews)
- Email Verification (134 reviews)
- Speed (117 reviews)
- Affordable (99 reviews)

**Cons:**

- Credit Limitations (37 reviews)
- Verification Issues (36 reviews)
- Poor Interface Design (29 reviews)
- Improvement Needed (27 reviews)
- Limited Credits (26 reviews)

  ### 4. [Campaign Monitor](https://www.g2.com/products/campaign-monitor/reviews)
  Campaign Monitor by Marigold is a simple yet powerful email marketing solution designed to help users create, manage, and optimize their email campaigns. This tool is tailored for marketers seeking to enhance their communication with subscribers through visually appealing and personalized emails. By focusing on user-friendly features, Campaign Monitor empowers individuals and teams to effectively engage their audience and drive conversions without needing extensive technical skills. This email marketing platform is particularly beneficial for small to medium-sized businesses, non-profits, marketing agencies, IT agencies, and marketing teams that prioritize building strong relationships with their subscribers. With its intuitive interface and robust functionality, Campaign Monitor caters to a diverse range of users, from those just starting in email marketing to seasoned professionals looking for efficient ways to streamline their campaigns. The platform's design is centered around making email marketing accessible, enabling users to focus on crafting compelling messages rather than getting bogged down by technical complexities. Key features of Campaign Monitor include a library of beautiful email templates, a drag-and-drop email builder, and engagement-based segmentation tools. The pre-designed templates allow users to create visually striking emails that reflect their brand identity, while the drag-and-drop builder simplifies the process of customizing layouts and content. This means that even users with minimal design experience can produce professional-quality emails that resonate with their audience. Engagement-based segmentation further enhances the effectiveness of campaigns by allowing marketers to tailor their content based on subscriber behavior and preferences, ensuring that the right message reaches the right audience at the right time. In addition to these features, Campaign Monitor offers comprehensive analytics and reporting tools that provide insights into campaign performance. Users can track open rates, click-through rates, and other key metrics, enabling them to refine their strategies and improve future campaigns. This data-driven approach helps marketers understand what resonates with their audience, allowing for continuous improvement and increased engagement over time. Overall, Campaign Monitor by Marigold stands out in the email marketing category by combining ease of use with powerful features that facilitate effective communication. Its focus on personalization, design, and analytics makes it a valuable tool for any organization looking to enhance its email marketing efforts and foster lasting relationships with subscribers.


  **Average Rating:** 4.1/5.0
  **Total Reviews:** 696

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 8.6/10 (Category avg: 8.4/10)
- **Performance:** 9.2/10 (Category avg: 9.0/10)
- **Analytics:** 9.4/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Marigold](https://www.g2.com/sellers/marigold-a8361ce6-777b-44ee-9300-b69d5ed350d6)
- **Company Website:** https://meetmarigold.com/
- **Year Founded:** 2017
- **HQ Location:** Nashville, US
- **LinkedIn® Page:** https://www.linkedin.com/company/meet-marigold (1,041 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** Marketing Manager, Marketing Specialist
  - **Top Industries:** Marketing and Advertising, Information Technology and Services
  - **Company Size:** 55% Small-Business, 32% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (21 reviews)
- User-Friendly (15 reviews)
- Easy Setup (13 reviews)
- Easy Creation (11 reviews)
- Intuitive (11 reviews)

**Cons:**

- Missing Features (11 reviews)
- Email Issues (7 reviews)
- Email Management (5 reviews)
- Campaign Issues (3 reviews)
- Limited Features (3 reviews)

  ### 5. [MailerLite](https://www.g2.com/products/mailerlite/reviews)
  MailerLite: Advanced email marketing tools. Effortless execution.  MailerLite is an email marketing and automation platform designed to help creators, small businesses, and ecommerce stores grow their audience and boost revenue—quickly, effortlessly and on their terms. Capture leads in style Build on-brand landing pages, websites, forms, and pop-ups that earn subscribers. Choose from over 150+ pixel perfect templates that are fully customizable with an intuitive Drag and drop builder. Or whip up landing pages, copy, and images with some AI magic. 🪄 Monetize your expertise with 0% commission  Sell newsletters, digital products, and 1-1 or group bookings without giving us a cut of your revenue. Kick the "Frankenstein" tech stack to the curb; manage your high-ticket coaching, scheduling, and payments natively in one place. You can even integrate your ecommerce store to track sales and turn subscribers into customers. Automate the client journey Explode engagement with multi-trigger automations and segmentation. With Bookings, you can automate the entire nurture process—from calendar syncing (Google/Outlook) to triggering tailored email sequences the moment a session is booked. Use Deliver by Timezone to ensure your messages land exactly when clients are most likely to open them. Data you can make decisions with  Get full visibility with reports on clicks, opens, and revenue. Nerd out with A/B and multivariate testing on emails and landing pages to find winning combos and improve performance with every test. Try everything MailerLite has to offer with a 14-day free trial. Our award-winning support team is here to help!


  **Average Rating:** 4.6/5.0
  **Total Reviews:** 1,084

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 9.1/10 (Category avg: 8.4/10)
- **Performance:** 8.9/10 (Category avg: 9.0/10)
- **Analytics:** 8.8/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [MailerLite](https://www.g2.com/sellers/mailerlite)
- **Year Founded:** 2010
- **HQ Location:** San Francisco, CA
- **Twitter:** @mailerlite (8,732 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/mailerlite-international/ (164 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** Owner, CEO
  - **Top Industries:** Marketing and Advertising, Writing and Editing
  - **Company Size:** 91% Small-Business, 7% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (70 reviews)
- Customer Support (61 reviews)
- Helpful (32 reviews)
- Affordable (31 reviews)
- Features (30 reviews)

**Cons:**

- Learning Curve (20 reviews)
- Difficulty (17 reviews)
- Missing Features (17 reviews)
- Poor Customer Support (17 reviews)
- Email Issues (15 reviews)

  ### 6. [Mailtrap](https://www.g2.com/products/mailtrap/reviews)
  Mailtrap: Email delivery platform for product-based companies that send at scale. Mailtrap is an email delivery platform built to help product companies ensure fast email delivery and high inboxing rates. It combines three core products: \* Email API/SMTP — reliable RESTful API and SMTP service for sending transactional and bulk emails. \* Email Marketing — to create, schedule, and send impactful promo campaigns that make a difference for you and your customers. \* Email Sandbox — to inspect and debug emails in staging, development, and QA environments with no risk of spamming customers' inboxes. Why go for Mailtrap: \* Fast and reliable email delivery: 99,99% platform uptime, dedicated IPs, throttling, auto warm-up and more to ensure high inboxing rates. \* Actionable analytics: monitor open, click, bounce, and spam rates with helicopter-view dashboards. Access detailed logs and graphs to analyze key email event trends. \* Integrations: Connect via Zapier (7,000+ apps), Make.com, Tabular, or use our API & SDKs for major programming languages. \* 24/7 live support from expert engineers and deliverability specialists, ready to assist you quickly. Trusted by over 150,000 monthly active users, including Yelp, PayPal, Toptal, Atlassian, and Adobe.


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 87

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 9.3/10 (Category avg: 8.4/10)
- **Performance:** 8.8/10 (Category avg: 9.0/10)
- **Analytics:** 8.8/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 5.3/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Railsware](https://www.g2.com/sellers/railsware)
- **Year Founded:** 2007
- **HQ Location:** Kraków
- **Twitter:** @railsware (2,117 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/122084/ (184 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** CTO, CEO
  - **Top Industries:** Computer Software, Information Technology and Services
  - **Company Size:** 47% Mid-Market, 43% Small-Business


#### Pros & Cons

**Pros:**

- Ease of Use (13 reviews)
- Customer Support (10 reviews)
- Easy Setup (9 reviews)
- Easy Integrations (8 reviews)
- Reliability (8 reviews)

**Cons:**

- Credit Limitations (3 reviews)
- Missing Features (3 reviews)
- Complexity (2 reviews)
- Difficult Navigation (2 reviews)
- Email Issues (2 reviews)

  ### 7. [Twilio SendGrid Email Marketing Campaigns](https://www.g2.com/products/twilio-sendgrid-email-marketing-campaigns/reviews)
  Simplify the way that you drive customers engagement and achieve your business goals with SendGrid Marketing Campaigns! Enjoy powerful, yet straightforward segmentation, flexible and frustration-free campaign editing, and industry-leading deliverability—all powered by the leading email service provider trusted by over [80,000 customers](https://sendgrid.com/customers/?extID=128039&channel=sponsorship&camp=review-sites&pub=g2crowd&place=profile&creative=mc&utm_medium=sponsorship&utm_source=g2crowd) globally, including Airbnb, Spotify and Uber. We help marketers like you send with confidence by providing: :: MORE EFFICIENT EMAIL BUILDING Our campaign building process is free from frustrating, rigid step-by-step wizards that slow you down. Choose-your-path editing options save you time, whether you prefer code, design or a mix of both. The result? More time to focus on what matters most to your marketing goals. :: EASY, HIGH-IMPACT SEGMENTATION & PERSONALIZATION Sending relevant, personalized email that drives results is easier than ever. Our intuitive, clean UI makes it clear who you’re targeting, and personalizing campaign subject lines and content is as easy as dreaming up the custom fields you want to import. :: INTUITIVE, IMPACTFUL EMAIL TESTING Make smart, data-driven decisions without getting lost in data overload. We bring the most important campaign stats front and center so you can quickly gauge performance and iterate When it’s time to dig deeper, take advantage of robust email activity data, inbox and geography insights and more. :: PROVEN DELIVERABILITY & SCALE Choosing Marketing Campaigns means choosing the proven scale, deliverability and expertise of SendGrid. Getting your messages to the inbox is at the core of everything we do; it’s why we’re trusted by today’s fastest growing brands. Upgrade to 24/7 support and expert services to bring your email program to new heights.


  **Average Rating:** 4.0/5.0
  **Total Reviews:** 309

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 8.2/10 (Category avg: 8.4/10)
- **Performance:** 8.5/10 (Category avg: 9.0/10)
- **Analytics:** 8.3/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Twilio](https://www.g2.com/sellers/twilio)
- **Year Founded:** 2008
- **HQ Location:** San Francisco, CA
- **Twitter:** @twilio (81,550 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/twilio-inc-/ (6,627 employees on LinkedIn®)
- **Ownership:** NYSE: TWLO

**Reviewer Demographics:**
  - **Who Uses This:** Marketing Manager, CEO
  - **Top Industries:** Information Technology and Services, Marketing and Advertising
  - **Company Size:** 67% Small-Business, 25% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (9 reviews)
- Easy Creation (6 reviews)
- Email Campaigns (6 reviews)
- Email Marketing (6 reviews)
- Intuitive (4 reviews)

**Cons:**

- Missing Features (4 reviews)
- Email Functionality (3 reviews)
- Expensive (3 reviews)
- Limited Features (3 reviews)
- Unclear Information (3 reviews)

  ### 8. [Litmus](https://www.g2.com/products/litmus/reviews)
  Litmus is an all-in-one email marketing platform that empowers teams to create emails their subscribers will love. Over 800,000 marketing professionals worldwide, including 80% of the Fortune 100, have relied on Litmus as a core component of their tech stack since 2005. Originally created to provide marketers with better email testing tools, Litmus’ capabilities improve every part of your email creation process including building, personalizing, monitoring, and analyzing your sends. Despite the many offerings, Litmus’ tools are intuitive and ready to use day-one. In 2025, Litmus joined the Validity product family. From contact data cleansing using DemandTools, to email validation using BriteVerify, Validity products now support you at every step of your campaign! The only other marketing tool you’ll need is an ESP. Questions? Their support team is always ready to help—with a 98% customer satisfaction rating to prove it. Everyone on the team will find value with Litmus: Email developers and designers can easily build and store templates in Litmus to speed up the email creation process—and empower team members without coding skills to create on-brand emails. Litmus brings your email workflow into a single platform, saving time and limiting room for error. Email marketers use Litmus to connect with their subscribers via highly personalized dynamic email content. Litmus’ thorough email testing provides peace of mind that every email is ready to go—and alerts you to unexpected changes 24/7 that may affect deliverability. The optional deliverability add-on gives you every detail about where your email landed and how to improve. Marketing leaders depend on Litmus’ ESP integrations—including Salesforce Marketing Cloud, HubSpot, Marketo, and more—to eliminate manual work and boost team collaboration. Litmus fits into your existing tech stack with little to no setup required. They love the optional analytics add-on that saves time and solves data differences by bringing results across multiple tools into one place. Eliminate the uncertainty that sending emails can create. Make every send count®


  **Average Rating:** 4.6/5.0
  **Total Reviews:** 446

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.4/10)
- **Performance:** 8.8/10 (Category avg: 9.0/10)
- **Analytics:** 8.6/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Validity Inc](https://www.g2.com/sellers/validity-inc)
- **Company Website:** https://www.validity.com
- **Year Founded:** 2018
- **HQ Location:** Boston, Massachusetts
- **Twitter:** @TrustValidity (1,153 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/11679353/ (344 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** Marketing Manager, Email Marketing Manager
  - **Top Industries:** Marketing and Advertising, Information Technology and Services
  - **Company Size:** 43% Mid-Market, 29% Enterprise


#### Pros & Cons

**Pros:**

- Ease of Use (45 reviews)
- Email Management (43 reviews)
- Email Marketing (43 reviews)
- Previews (29 reviews)
- Features (26 reviews)

**Cons:**

- Slow Performance (11 reviews)
- Missing Features (10 reviews)
- Email Issues (9 reviews)
- Email Management (9 reviews)
- Expensive (9 reviews)

  ### 9. [Bouncer](https://www.g2.com/products/bouncer/reviews)
  Bouncer - The easiest to use, yet the most powerful E-mail Validation and deliverability Service. Bouncer is a SaaS fortress-like secure (GDPR compliant) e-mail verification, and deliverability platform trusted by thousands of companies from 6 continents. The platform was founded in 2017 with a simple mission to improve Human 2 Human e-mail communication and help people to get and stay connected via the e-mail channel. Bouncer is a technological leader in the e-mail validation market. Both list and API verification are top-notch mechanisms with a zero downtime policy. The product has the best coverage and high performance (up to 200 000 verified e-mails per hour per customer). To be a more complex solution for both Enterprise and SMB segments, the product has additional features like e-mail Toxicity Check and Deliverability Kit, so users can take care of and improve their deliverability. Bouncer also has a vast integrations library (top Marketing Automation, Email Marketing, or Sales tools). Why should you consider Bouncer as your e-mail validation and deliverability solution? 1. High precision with bias against false negatives - so the customers don’t lose the ability to connect because of the wrong categorization 2. The best coverage - the ability to verify e-mail addresses hosted by different e-mail service providers (even deep catch-all Google Workspace and Office365 verification) with a low amount of unknown results (0,3-3%) 3. High performance - speed of verification and generous rate-limiting. They can quickly check 200 000 e-mails per hour per customer 4. Reliable (zero downtime policy) and Secure 5. Complexity simplified - top-notch technological solution with simple and intuitive UI. Features: Super simple to use E-mail Checker & E-mail Verifier Just drag and drop your e-mail list with up to 250k addresses, and let Bouncer's e-mail checker do the job! You will know which e-mails are safe to send, but the app will also detect "accept all" and disposable addresses. Bounce Estimate Verifying your e-mail list is only half the journey. Bouncer knows how tricky it can be to make wise and knowledgeable decisions about which addresses to keep in your contacts lists, especially for “risky” ones. That is why Bouncer, is the only e-mail checker that gives you the information on what you may expect after sending your campaign. By using our proprietary algorithm and analyzing your whole list, it will calculate how many of them may bounce back. Free Email Verification Sampling Bouncer allows you to test the quality of your list without actually verifying it – completely free of charge. Based on a randomly selected sample of your list, Bouncer will tell you if your list is fine or if you will need to clean it. This will help you reduce the time and cost of verifying lists that are safe to send. Data safety Bouncer are fully GDPR compliant by design, their data centers are located in EU territory, and the submitted e-mails are hashed (anonymized) in all parts of the system. You can also delete your verification results on demand. Otherwise, we will do it automatically after 60 days. E-mail Verification and Validation API Bouncer E-mail Verification API is a simple yet powerful way to enhance your IT solution with the most precise and high-performing e-mail validation and verification capabilities. Multiple endpoints both synchronous and asynchronous will meet your most sophisticated e-mail verification needs. As it is super secure and robust, you and your customer's data are safe. Toxicity Check You can Identify if your e-mail list contains any toxic e-mail addresses, e.g., widely circulated or breached ones, or those belonging to complainers or litigators or potential spam traps. Deliverability Kit Check if your message gets to the inbox. Test your inbox placement across many e-mail providers, verify your authentication, monitor blacklists, and get alerted when something bad is happening. Bouncer Shield Real-time protection tool for online forms that keeps data clean and safe by blocking invalid, malicious, or fraudulent email addresses as soon as they’re entered. This is Bouncer!


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 334

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 9.7/10 (Category avg: 8.4/10)
- **Performance:** 9.1/10 (Category avg: 9.0/10)
- **Analytics:** 9.2/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 6.1/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Bouncer Sp. z o.o.](https://www.g2.com/sellers/bouncer-sp-z-o-o)
- **Year Founded:** 2017
- **HQ Location:** Wroclaw, Lower Silesian District
- **Twitter:** @UseBouncer (179 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/27014469/ (70 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** CEO, Founder
  - **Top Industries:** Marketing and Advertising, Computer Software
  - **Company Size:** 85% Small-Business, 9% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (54 reviews)
- Accuracy (53 reviews)
- User Interface (27 reviews)
- Email Verification (26 reviews)
- Reliability (25 reviews)

**Cons:**

- Expensive (15 reviews)
- Verification Issues (13 reviews)
- Email Issues (10 reviews)
- Improvement Needed (5 reviews)
- Insufficient Information (5 reviews)

  ### 10. [Unspam.email](https://www.g2.com/products/unspam-email/reviews)
  Unspam.email helps email marketers, email deliverability consultants, agencies, eCommerce and SaaS teams maximize email performance by ensuring messages land in the inbox, not the spam folder. With powerful email deliverability testing, email design previews, AI assistant and spam filter checks, Unspam.email gives you actionable insights before you hit send.


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 13

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 9.3/10 (Category avg: 8.4/10)
- **Performance:** 10.0/10 (Category avg: 9.0/10)
- **Analytics:** 9.7/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 1.3/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Unspam.email](https://www.g2.com/sellers/unspam-email)
- **Year Founded:** 2020
- **HQ Location:** New York, US
- **Twitter:** @Unspamemail (83 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/unspam/ (1 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Company Size:** 79% Small-Business, 7% Mid-Market


#### Pros & Cons

**Pros:**

- Accuracy (8 reviews)
- Ease of Use (6 reviews)
- Detailed Analysis (3 reviews)
- Features (3 reviews)
- Positive Results (3 reviews)

**Cons:**

- Credit Limitations (2 reviews)
- Slow Performance (2 reviews)
- Difficult Learning (1 reviews)
- Difficult Setup (1 reviews)
- Email Integration (1 reviews)

  ### 11. [Mailosaur](https://www.g2.com/products/mailosaur/reviews)
  Mailosaur makes it easy to test emails and text messages (SMS) before they reach real customers. Instead of setting up your own mail servers or devices, you can send all test messages to Mailosaur and check exactly what users would see. QA teams use Mailosaur to: - Confirm that messages send when they should (like password resets, sign-ups, and account changes). - Test multi-factor authentication (MFA) and one-time passcodes (OTP) to make sure users can always log in securely. - Check links, images, and attachments work correctly. - Verify content and designs look right across different devices. - Automate message checks as part of their normal testing process. With Mailosaur, you can spend less time fighting with test environments and more time making sure your product works the way it should.


  **Average Rating:** 4.6/5.0
  **Total Reviews:** 22

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 8.4/10)
- **Performance:** 6.7/10 (Category avg: 9.0/10)
- **Analytics:** 8.3/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 5.8/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Mailosaur](https://www.g2.com/sellers/mailosaur)
- **Year Founded:** 2013
- **HQ Location:** Basingstoke, Hampshire
- **Twitter:** @mailosaur (185 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/mailosaur/ (13 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Company Size:** 55% Small-Business, 27% Enterprise


#### Pros & Cons

**Pros:**

- Ease of Use (9 reviews)
- Time-saving (5 reviews)
- Automation (4 reviews)
- Intuitive Design (4 reviews)
- Reliability (4 reviews)

**Cons:**

- Expensive (6 reviews)
- Pricing Issues (3 reviews)
- Limited Features (2 reviews)
- Low Limits (2 reviews)
- Poor UI (2 reviews)

  ### 12. [AWeber](https://www.g2.com/products/aweber/reviews)
  AWeber is an email marketing platform built for small business owners, coaches, affiliate marketers, and online retailers. It includes intuitive tools for email automation, landing page creation, and AI-generated emails to help you grow your audience and drive more sales—without needing tech skills. With built-in AI writing tools, you can generate emails, subject lines, and newsletters in your unique voice, so you never start from scratch. Automations keep your campaigns running in the background, while best-in-class deliverability ensures your messages reach the inbox. Whether you're selling products, sharing content, or building a community, AWeber helps you stay consistent and top-of-mind with your audience. Trusted by over 1,000,000 businesses for more than 25 years, AWeber combines industry experience with continuous innovation to help you save time, simplify your marketing, and grow your business.


  **Average Rating:** 4.2/5.0
  **Total Reviews:** 618

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.4/10)
- **Performance:** 9.2/10 (Category avg: 9.0/10)
- **Analytics:** 9.4/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [AWeber](https://www.g2.com/sellers/aweber)
- **Year Founded:** 1998
- **HQ Location:** Chalfont, PA
- **Twitter:** @AWeber (29,740 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/245955/ (90 employees on LinkedIn®)
- **Phone:** +1 (877) 293-2371

**Reviewer Demographics:**
  - **Who Uses This:** Owner, CEO
  - **Top Industries:** Marketing and Advertising, Health, Wellness and Fitness
  - **Company Size:** 83% Small-Business, 14% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (10 reviews)
- Email Marketing (7 reviews)
- Easy Setup (6 reviews)
- Email Management (6 reviews)
- Simple (6 reviews)

**Cons:**

- Limited Features (5 reviews)
- Missing Features (5 reviews)
- Expensive (4 reviews)
- Limited Templates (4 reviews)
- Learning Curve (3 reviews)

  ### 13. [Everest](https://www.g2.com/products/validity-inc-everest/reviews)
  Everest is a fully integrated email success platform providing crucial insights and deliverability guidance so you can reach more people, increase engagement, and improve efficiencies of your email program. Improve your email deliverability by getting complete visibility into your email marketing metrics and sender reputation, understand your audience and deliver content that is timely, personalized, and functions flawlessly on any device, and get a holistic view of your email program with the insights, guidance, and exclusive data you need at your fingertips – all in a single platform. Everest is built by the combined forces of Return Path, BriteVerify, and 250ok. Bringing together 20+ years of email marketing experience and continuous learning from thousands of customers into this unified and powerful platform.


  **Average Rating:** 4.2/5.0
  **Total Reviews:** 185

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 8.3/10 (Category avg: 8.4/10)
- **Performance:** 8.9/10 (Category avg: 9.0/10)
- **Analytics:** 8.9/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Validity Inc](https://www.g2.com/sellers/validity-inc)
- **Company Website:** https://www.validity.com
- **Year Founded:** 2018
- **HQ Location:** Boston, Massachusetts
- **Twitter:** @TrustValidity (1,153 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/11679353/ (344 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** Marketing Manager
  - **Top Industries:** Marketing and Advertising, Information Technology and Services
  - **Company Size:** 41% Mid-Market, 34% Small-Business


#### Pros & Cons

**Pros:**

- Ease of Use (7 reviews)
- Helpful (5 reviews)
- Dashboard Features (3 reviews)
- Deliverability Improvement (3 reviews)
- Design Ease (3 reviews)

**Cons:**

- Expensive (2 reviews)
- Change Adaptation (1 reviews)
- Complexity (1 reviews)
- Complex Setup (1 reviews)
- Dashboard Issues (1 reviews)

  ### 14. [Email on Acid](https://www.g2.com/products/email-on-acid/reviews)
  As the industry leader in email preparation, Email on Acid offers the world's most comprehensive and flexible automated email pre-deployment platform. Developers, marketers, and enterprise organizations deliver email perfection, achieve efficiencies, improve marketing ROI, and protect brand reputation. Co-founded in 2009 by industry thought leader John Thies, Email on Acid was born out of a desire to make email marketing better for everyone. To learn more, visit emailonacid.com.


  **Average Rating:** 4.5/5.0
  **Total Reviews:** 42

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 9.2/10 (Category avg: 8.4/10)
- **Performance:** 8.5/10 (Category avg: 9.0/10)
- **Analytics:** 9.3/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Sinch](https://www.g2.com/sellers/sinch)
- **Year Founded:** 2008
- **HQ Location:** Stockholm, Sweden
- **Twitter:** @wearesinch (3,654 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/sinch (4,319 employees on LinkedIn®)
- **Ownership:** SINCH.ST

**Reviewer Demographics:**
  - **Top Industries:** Marketing and Advertising, Computer Software
  - **Company Size:** 45% Mid-Market, 40% Small-Business


  ### 15. [GlockApps](https://www.g2.com/products/glockapps/reviews)
  GlockApps is an all-in-one platform designed to help businesses solve email deliverability and security issues. It provides tools to track inbox placement, monitor authentication and domain health, detect blocklist issues, and analyze content performance in one place. The suite includes four key tools: Inbox Insight Test and optimize your email deliverability before sending: • See where your emails land across Gmail, Outlook, and major ISPs; • Check spam scores from Google, Barracuda, SpamAssassin, and others; • Review email authentication and domain/IP reputation; • Analyze content and HTML compatibility; • Receive action steps to fix issues and boost inbox placement. https://glockapps.com/spam-testing/ DMARC Analyzer Protect your domain and gain full visibility into email authentication: • Prevent phishing and spoofing with DMARC enforcement; • Verify emails with SPF and DKIM to ensure legitimacy; • Detect unauthorized senders and suspicious activity; • View DMARC reports in a clear, visual format; • Manage unlimited domains and organize them into groups; • Get white label PDF weekly and monthly DMARC digests with full visibility of your sending history; • Simplify DMARC compliance with automated monitoring. https://glockapps.com/dmarc-analyzer/ Uptime Monitor Stay in control of your website and email infrastructure with uptime monitoring: • Get instant alerts when something goes offline or underperforms; • Scan your sending IPs across 30+ major blacklists automatically; • Continuously track SPF, DKIM, and DMARC records for issues; • Choose how you’re notified (email, Slack, or Telegram); • Monitor TLS and TCP ports to ensure secure mail flow; • Detect website outages instantly with HTTP checks; • Run checks as often as every minute; • Define custom thresholds to catch degraded performance early; • Verify results from multiple locations to avoid false positives. https://glockapps.com/uptime-blacklist-monitor/ Consulting Services Personalized deliverability guidance from GlockApps experts: • Start with a free 20-minute call to explore your goals and challenges. • Get expert advice to improve your email deliverability and performance. • Receive personalized recommendations for better inbox placement. • Improve open rates, CTR, and sales by optimizing your email deliverability • Access a recording of your consultation for future reference. https://glockapps.com/email-deliverability-consulting/


  **Average Rating:** 4.1/5.0
  **Total Reviews:** 26

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 5.7/10 (Category avg: 8.4/10)
- **Performance:** 8.6/10 (Category avg: 9.0/10)
- **Analytics:** 8.8/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [G-Lock Software](https://www.g2.com/sellers/g-lock-software)
- **Year Founded:** 2009
- **HQ Location:** Wyoming, USA
- **LinkedIn® Page:** https://www.linkedin.com/company/g-lock-software (25 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Top Industries:** Marketing and Advertising
  - **Company Size:** 65% Small-Business, 27% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (6 reviews)
- Detailed Analysis (5 reviews)
- Accuracy (4 reviews)
- Deliverability Improvement (3 reviews)
- Deliverability Performance (3 reviews)

**Cons:**

- Difficult Learning (1 reviews)
- Inadequate Reporting (1 reviews)
- Lack of Features (1 reviews)
- Payment Issues (1 reviews)
- Verification Issues (1 reviews)

  ### 16. [MailUp](https://www.g2.com/products/mailup/reviews)
  MailUp is a simple and scalable solution to create, automate and customize Email, SMS, and Messaging Apps marketing campaigns. Trusted by 10,000+ customers worldwide, it offers advanced automation features and best-of-breed technology for your marketing strategies. A complete solution for multichannel marketing needs: newsletters, transactional emails, subscription forms, landing pages, promotions, SMS, Messaging Apps (Facebook Messenger and Telegram), and much more! Try its drag & drop email builder, integrate your marketing stack, create automated multichannel workflows in a matter of seconds and monitor your campaign performances through in-depth reports. Italian by birth, international by vocation. Established in 2003, over the years MailUp has grown to become the market leader in Italy and to operate in over 50 countries, with 5 branches worldwide. Over 10,000 companies across the globe trust MailUp as a strategic partner for their Digital Marketing activities. MailUp offers the best infrastructure and international certifications to ensure maximum deliverability to your messages. Its powerful messaging platform is complemented by a range of tools to help your day-to-day marketing campaigns run smoothly. Its teams at the technology hubs in Cremona (Italy) and Silicon Valley are at the forefront of flexible, scalable, integrated software development.


  **Average Rating:** 3.7/5.0
  **Total Reviews:** 41

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 6.4/10 (Category avg: 8.4/10)
- **Performance:** 9.2/10 (Category avg: 9.0/10)
- **Analytics:** 6.7/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Mailup](https://www.g2.com/sellers/mailup)
- **Year Founded:** 2003
- **HQ Location:** Milan, Italy
- **Twitter:** @MailUp_US (887 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/154096/ (72 employees on LinkedIn®)
- **Ownership:** BIT:MAIL

**Reviewer Demographics:**
  - **Top Industries:** Marketing and Advertising, Internet
  - **Company Size:** 51% Small-Business, 40% Mid-Market


  ### 17. [Folderly](https://www.g2.com/products/folderly/reviews)
  Folderly is an Email Deliverability solution that offers a comprehensive approach to ensuring flawless email deliverability. Locate, solve, and prevent email deliverability pitfalls, and ensure your emails reach the Inbox folder. Never again let your emails be part of the 51% of all business emails that never reach the inbox. Make every email count, bringing in revenue and business opportunities.


  **Average Rating:** 4.8/5.0
  **Total Reviews:** 99

**User Satisfaction Scores:**

- **Has the product been a good partner in doing business?:** 8.9/10 (Category avg: 8.4/10)
- **Performance:** 9.3/10 (Category avg: 9.0/10)
- **Analytics:** 9.6/10 (Category avg: 8.8/10)
- **What is your organization's estimated ROI on the product (payback period in months)?:** 10/10 (Category avg: 10/10)


**Seller Details:**

- **Seller:** [Folderly](https://www.g2.com/sellers/folderly)
- **Year Founded:** 2019
- **HQ Location:** Dover, Delaware
- **Twitter:** @Folderlycom (97 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/folderly/ (24 employees on LinkedIn®)

**Reviewer Demographics:**
  - **Who Uses This:** CEO, Marketing Manager
  - **Top Industries:** Marketing and Advertising, Computer Software
  - **Company Size:** 67% Small-Business, 31% Mid-Market


#### Pros & Cons

**Pros:**

- Ease of Use (4 reviews)
- Customer Support (3 reviews)
- Deliverability Improvement (3 reviews)
- Platform Quality (3 reviews)
- Communication (2 reviews)

**Cons:**

- Dashboard Issues (1 reviews)
- Email Issues (1 reviews)
- Inaccuracy (1 reviews)
- Limited Templates (1 reviews)
- Outdated Data (1 reviews)



## Parent Category

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



## Related Categories

- [Email Marketing Software](https://www.g2.com/categories/email-marketing)
- [Transactional Email Software](https://www.g2.com/categories/transactional-email)
- [Email Deliverability Tools](https://www.g2.com/categories/email-deliverability)