mail-tester.com : Free online service that allows you to test your emails for Spam, Malformed Content and Mail Server Configuration problems
MailHog : MailHog is an email testing tool for developers:
Configure your application to use MailHog for SMTP delivery
View messages in the web UI, or retrieve ...
mmmmail! : mmmmail! is a completely ANONYMOUS and FREE disposable Email to RSS service.
This means you can choose any email address in the mmmmail.com domain and...
SquirrelMail : SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages...
Guide to CSS support in email clients : Designing an HTML email that renders consistently across the major email clients can be very time consuming. We've put together this guide to save you...
Firefox addon to simplify the use of temporary e-mail addresses in order to protect your real address from spam.