Free pantomime software for mac

Pantomime provides a set of Objective-C classes that model a mail system. Pantomime can be seen as a JavaMail 1.2 clone written in Objective-C.
Pantomime is almost entirely written in Objective-C. The C language is only used where performance is critical. Pantomime uses a little bit of ELM code.
Main features:
- A full MIME encoder and decoder
- A folder view to local mailboxes (Berkeley Format), POP3 accounts or IMAP mailboxes
- A powerful API to work on all aspects of Message objects
- A local mailer and a SMTP conduit for sending messages
- APOP and SMTP AUTH support
- IMAP and POP3 URL Scheme support
- iconv and Core Foundation support
- maildir support
- SSL support for IMAP, POP3 and SMTP.
Enhancements:
- TLS support for all protocols
- IMAP reconnection code and "fast folder switching" support
- Fully ported the application to Microsoft Windows (using GNUstep on MinGW)
- Improved the documentation and the examples
- Lots of other features, bug fixes, major refactorings and speed improvements.

GNUMail.app is a fully featured mail application running on Linux (or FreeBSD, OpenBSD, etc) and Apple Mac OS X.
It uses the GNUstep development framework or Apple Cocoa, which is based on the OpenStep specification provided by NeXT, Inc.
Main features:
- Multiple POP3 (with APOP support) accounts with local cache support (for leaving messages on server)
- Multiple delivery agents (SMTP or local mailer)
- Mail spool file support for receiving
- Good IMAP support with local caching
- Full RFC822 and RFC2822 support
- Read, compose, bounce, reply and forward mails
- Mailbox management (create, delete, locking and transfer messages) using the Berkeley mbox format
- Personal preferences management
- MIME support (decode and encode)
- A full MIME types manager
- Quoted Printable and BASE64 support
- Address Book with groups support
- Find Panel with regular expressions support
- Automatic or manual fetching of your mails (users choice)
- Powerful filters that supports regular expressions
- GPG (PGP) support through a bundle
- Messages threading
Enhancements:
- Universal
- Now makes use of the new mailbox caching code from Pantomime
- New task handling code
- UI improvements for Mac OS X
- Lots of other features, bug fixes, refactorings, speed and usability improvements.