YAM (short for Yet Another Mailer) is a MIME-compliant open-source mail user agent (MUA) written for Amiga-based computer systems (AmigaOS4, AmigaOS3, MorphOS, AROS). It supports POP3, SMTP, TLSv1/SSLv3 connection security, multiple users, multiple identities , PGPv2/v5 encryption, unlimited hierarchical folders, filters, a configurable user interface based on the Magic User Interface (MUI) framework and an ARexx interface and many other features which are common for MUAs today. The initial release from 1995 arrived when the Internet was still something very new for the average Commodore Amiga user. However, as time passed and further 1.x updates were released, YAM became quickly popular thanks to its simplicity and comprehensible user interface. The new release offers several improvements and bugfixes.