Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac
- Windows
- Linux

MailGrab is described as 'Debug your emails. Drop MailGrab's SMTP into your staging .env. Every email your app fires — welcome messages, password resets, invoices — shows up here instead. HTML rendered, headers readable, nothing reaches real inboxes' and is an app in the development category. There are more than 10 alternatives to MailGrab for a variety of platforms, including Web-based, SaaS, Windows, Linux and Mac apps. The best MailGrab alternative is Mailpit, which is both free and Open Source. Other great apps like MailGrab are Mailtrap, Mailnest, Mailosaur and testmail.app.

Mailtrap is an Email Delivery Platform for businesses and individuals to Test, Send, and Control their email infrastructure performance.



Mailnest is an all in one email QA tool for development & testing teams in IT companies to test & improve email functionality.




Email Testing for QA & Development Teams. Catch every email your product sends, analyze it's contents, follow links and test deliverability all via the Mailosaur API.

QA tool for automating end-to-end email tests. Get unlimited private email addresses and inboxes for testing new user signups, transactional emails and drip campaigns, deliverability and spam scores, etc. Integrates with your CI/CD workflow. Includes spam testing.



Create email addresses on demand. Send and receive real emails and attachments from code. Rest API and developer kits available.

Papercut is a simplified SMTP server designed to only receive messages (not to send them on) with a GUI on top of it allowing you to see the messages it receives.




Mailisk is an E2E email testing platform. It allows you to receive emails with code and automate email flows. You get a unique subdomain and access to unlimited custom email addresses.

MailDev is a simple way to test your project's generated emails during development with an easy to use web interface that runs on your machine built on top of Node.js.

Mailsnag lets you build resilient SMTP integrations while protecting you from spamming customers during testing on QA and Staging environments. It is like Chaos Monkey for SMTP integrations.




MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface. Run mailcatcher, set your favourite app to deliver to smtp://127.0.0.1:1025 instead of your default SMTP server, then check out http://127.0.0.
