
Mailosaur
MailSlurp
MailHog
Litmus
Mailgun
Email on Acid
Resend
Modern email delivery platform with three products: Live Sending, Email Sandbox and Email Marketing.

React Native Development Company
Which is more popular?
Based on our record, Mailtrap seems to be more popular. It has been mentioned 58 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mailtrap.io | appsted.com |
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| Company | Startup from Ukraine · 100 - 249 employees · 2012 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Mailtrap is an email platform with three products: Live Sending, Email Sandbox, and Email Marketing. Integrate in about 5 minutes with official SDKs, track email events automatically with webhooks, and get alerted before deliverability issues hurt delivery. Mailtrap is ISO 27001 certified and SOC...
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What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Mailtrap is highly recommended for developers, QA engineers, and teams involved in application development who need a secure and isolated environment for testing email functionalities. It's particularly useful for those working with staging environments and require a way to simulate email delivery without sending actual emails to real users.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
What's new in Mailtrap: summer 2026 update
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Mailtrap and Hire React Native Developer.
Mailtrap's answer
Mailtrap brings Live Sending, Email Sandbox, and Email Marketing together in one platform. Teams can safely test emails before sending, deliver transactional and bulk messages through API or SMTP, and manage marketing campaigns. Separate sending streams help protect critical transactional emails, while analytics and reputation alerts help teams spot delivery issues early.
Mailtrap's answer
Mailtrap is a strong choice for teams that want quick integration, safe email testing, and clear visibility into delivery. Official SDKs simplify setup, webhooks track email events, and reputation monitoring helps identify potential problems. Teams also get human support for technical email questions.
Mailtrap's answer
Mailtrap primarily serves developers, QA engineers, and product teams that build and maintain email workflows. Email Marketing also supports marketers who need contact management, campaign creation, scheduling, and automations. It suits businesses ranging from small development teams to enterprises.
Mailtrap's answer
Mailtrap started in 2011 as an internal Railsware tool for testing emails without accidentally sending them to real customers. The team later made it available to other developers. Since then, it has grown from an email testing tool into a platform covering testing, sending, and email marketing.
Mailtrap's answer
Mailtrap’s publicly listed technologies include Ruby on Rails, Go, React, and JavaScript, with PostgreSQL, Redis, Sidekiq, and Redshift supporting data processing and background jobs. Its infrastructure includes AWS, DigitalOcean, Terraform, and Amazon ECS.
Mailtrap's answer
Share your experience with using Mailtrap and Hire React Native Developer. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


A safe email testing tool for staging and development, Mailtrap enables you to inspect and debug your email samples before delivering them to your customers. It helps you keep your email messages clear of spam filters...
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Recommendations tracked on public social media and blogs since March 2021.


Start-here: Transactional + newsletter → Resend (3,000/mo, 100/day, 3 domains on Free). Staging inbox → Mailtrap sandbox (tiny on Free). Marketing audience → Loops. OTP texts → Twilio after trial credit. - Source: dev.to / about 1 month ago
Does anyone know of a similar tool for catching SMS messages in local/development environment? My company uses mailtrap[0] in our development environments to give engineers and product managers a tool to preview emails that would... - Source: Hacker News / almost 2 years ago
If you need to make sure that all of your mailto links are inserted properly, other links are sent to the right recipients, and that the HTML is not broken in any way, then check out Mailtrap Email Testing. - Source: dev.to / about 2 years ago
Tracking Hire React Native Developer since Jan 2023.
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litmus tests and tracks your email campaigns, so you can always put your best design forward.
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A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.
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We make the send button safer. For every campaign, every message, and every inbox, Email on Acid has the time-saving tools you need to put your best email forward.
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