Windows eml and mbox viewer.
Sync Outlook with Google, SOGo or any other CalDAV / CardDAV server
software for email automation (newsletters, transaction mails, etc.)
bulk messages to unlimited people at once
Create, send and track Unlimited bulk emails for Free
one server framework
Tools to convert Z mark-up to HTML or text.
Send emails from command line
Robust open source POP3 client and MIME parser written in C#
Conversation manager
MailChecker - The simplest way to check your multiple webmail accounts