email validator

HTML/XHTML markup validator.

XML and XHTML checker.

Highly Secure Email, Chat, Instant Messaging, and Collaboration.

A e-mail merge, email extractor, data parser and all in one email utility

Extract email addresses from text files.

Open source web conformance tool.

A new open-source mail client for Mac OS X.

Email Newsletter Software

Email client from Mozilla.

Email collaboration tool.