LunaticSMTP

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

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

1 Like

Papercut

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.

• Very good GUI on windows with a lot of configuration options and viewable headers etc. jensv • Jan 2017 • 1 agrees and 0 disagrees Disagree   Agree

Free Open Source Windows

3 Like

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

4 Like

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

9 Like

smtp4dev

Dummy SMTP server that sits in the system tray and does not deliver the received messages. The received messages can be quickly viewed, saved and the source/structure...

Free Windows

6 Like

Debug Mail

Debug Mail is a mail server for testing applications and websites without need to set up an SMTP server.

Free Web

9 Like

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

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

7 Like

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

3 Like