Mailisk

We offer one platform that covers all email-related needs in one place: testing, sending, and in-depth tracking to control how email infrastructure works and performs.

Litmus is a testing service for web and marketing professionals. It allows people to cross-browser test their websites, and test their email newsletters across a range of email clients and spam filters.

Email on Acid is the most affordable, self-serve email testing platform in the world. We can help you maximize the success of your email marketing efforts by diagnosing and improving your renderability, deliverability, click-throughs and conversions.

It is an email testing tool for developers. You can configure your application to use MailHog for SMTP delivery. You can view messages in the web UI, or retrieve them with the JSON API.

For the best HTML e-mail delivery results, CSS should be inline. This is a huge pain and a simple newsletter becomes un-managable very quickly. This script is the solution.

It runs a super simple SMTP server which catches any message sent to it to display in a web interface. It catches all mail and stores it for display. It shows HTML, Plain Text and Source version of messages, as applicable.

Mailinator is a disposable email service that allows QA departments to test with 1000's of inboxes.

Automate email and SMS tests, like account verification and password resets, using any language or testing framework using the Mailosaur API. Stop email being delivered to customers using fake SMTP servers.

MailSlurp is an end-to-end email testing service. It has a web-app for managing your account and a REST API for sending and receiving emails from randomly generated email addresses.

It automates end-to-end email tests with a powerful GraphQL API and unlimited private email addresses and inboxes, test new user signups, transactional emails, drip campaigns, deliverability, spam scores, etc.

It is an SMTP server designed to run in your dev/test environment, that is designed to catch any email you or your application is sending, and display it in a web interface instead of sending to real world.

It is an Email testing and Email preview tool to test emails on several devices, screen sizes, and email clients. It checks your email for broken HTML, and accessibility issues, preview the email from the notification bar, displays the reading time of your email, and improves readability.

It is an online service that helps you create email templates and test them on dozens different physical devices and applications.

Disposable email and fake email capture for QA and development teams

Send emails that don't end up in the spam folder. Find out if your email is likely to trigger spam filters. Run a free email spam and security test in less than one minute.

It is a one stop email testing platform which helps improve the emails being sent from application and reduce the costs associated with email workflow testing.