MailHog

MailHog is an email testing tool inspired by MailCatcher, but easier to install. - Configure your application to use MailHog for SMTP delivery - View emails in the web...

Free Open Source Mac Windows Linux

Mailtrap

Mailtrap is a fake SMTP server for development teams to test, view and share emails sent from the development and staging environments without spamming real customers.

Freemium Web

FakeSMTP

FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily. It is written in Java. Configure your application to use "localhost"...

Free Open Source Mac Windows Linux

LunaticSMTP

LunaticSMTP is a dummy SMTP server with desktop GUI for testing email sending applications.

Free Open Source Mac Windows Linux BSD JavaFX ... Java

mailslurp

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...

• Discontinued https://www.mailslurp.com/ displays "MailSlurp has ended."

Free Web

Mailosaur

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...

Commercial $ $ $ Web

MailCatcher

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...

Free Open Source Mac Windows Linux

Mailocal

A local SMTP server with email display, used mostly for development of other apps. Think unlimited Mailtrap that runs on your own computer.

Free Open Source Self-Hosted

SMTP Bucket

A fake SMTP server for e-mail integration testing. We capture all the e-mails we receive and make them available via our website and REST API.

Free Web