yahoo mail

Mail.app plug-in allows sending of secure email.

Chat with AIM, Jabber, Yahoo, ICQ, and more.

Simple, beautiful, powerful e-mail.

AI meets e-mail.

Removes duplicate messages from the current view in Mail.

Get your customers, mail, calendar, tasks, etc., in one central database.

Quoting headers like Outlook and signatures in Mail.app.

Powerful and secure Internet mail server.

Enables bottom-posting for Mail messages.

Speaking email checker for Apple Mail.