GNUMail.app

GNUMail.app is a mail application that runs on Linux, FreeBSD, OpenBSD, and Apple Mac OS X. The application is developed using the GNUstep development framework or Apple Cocoa, which is based on the OpenStep specification provided by NeXT, Inc. GNUMail.app is licensed under the GPL, and the full source code is available. This application was created from scratch and uses Pantomime as its mail handling framework.

One of the key features of GNUMail.app is its support for multiple POP3 accounts with APOP and local cache support. The application also supports multiple delivery agents (SMTP or local mailer), mail spool file support for receiving, and good IMAP support with local caching. Additionally, GNUMail.app provides full RFC822 and RFC2822 support and allows users to read, compose, bounce, reply, and forward emails.

Other features include mailbox management using the Berkeley mbox format, personal preference management, MIME support (decode and encode), a full MIME types manager, Quoted Printable and BASE64 support, an Address Book with groups support, a Find Panel with regular expressions support, and automatic or manual fetching of your mails. The application also has powerful filters that support regular expressions, GPG (PGP) support through a bundle, messages threading, and more.

To use GNUMail.app, users need GNUstep core (make 1.9.0, base 1.9.0, gui 0.9.1, and back 0.9.1) and Addresses. In the latest release, GNUMail.app now makes use of the new mailbox caching code from Pantomime. The release also includes new task handling code and UI improvements for Mac OS X. Users can also enjoy bug fixes, refactorings, speed improvements, and usability improvements. Overall, GNUMail.app is a powerful mail application with great features and excellent open-source capabilities.