Top 16 products relevant to Office Suites and Email Testing

Email Delivery Platform that delivers just in time.
 Great for businesses and individuals. .

Open Source freemium

Email Testing for QA & Development Teams.

MailHog is an email testing tool inspired by MailCatcher, but easier to install.

Open Source

MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a...

Open Source

FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily.

Smtp4dev is an all-in-one SMTP server designed to develop and test emails in your applications.

Ethereal is a fake SMTP service, mostly aimed at Nodemailer users (but not limited to). It's a completely free anti-transactional email service where messages never get delivered.

Dummy SMTP server with JavaFX gui for testing email sending applications - anlar/lunaticsmtp.

An email and SMTP testing tool with API for developers.

Collect email sending data across your email services.

A SMTP server with JavaFX GUI interface, TLS, HTML messages, and attachment support.

Streamline email testing with our reliable sandbox account.

Fake SMTP server for safe email testing. Stop accidentally spamming your customers.

A local SMTP server with email display, used mostly for development of other apps.

Sendria (formerly MailTrap) is a 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.

A web based fake SMTP server for e-mail integration testing.