Mail Clients

Since imip-agent is integrated with mail infrastructure defined by Internet standards, users can use any mail program that is capable of sending and receiving standards-based mail. However, it is recommended that MIME-capable mail programs are used in order to properly present messages produced by imip-agent. Since the MIME standards have been in existence since the 1990s, most commonly-used mail programs should work with imip-agent with few difficulties.

Meanwhile, mail clients that can understand and present calendar data are less common. The following Free Software programs have been tested with imip-agent:

Program	Remarks
Claws Mail	Supports basic scheduling Does not support recurring events Does not support the `COUNTER` scheduling method Does not support free/busy exchange over e-mail
Kontact	Supports scheduling including methods like `COUNTER` Supports recurring events Seems to support free/busy exchange over e-mail (although not transparently) and over HTTP Seems to require numerous libraries and KDE components, including the somewhat unpolished Akonadi system
Mozilla Thunderbird (with Lightning Calendar extension) Also known as Icedove (and Iceowl) in Debian	Supports basic scheduling Supports recurring events but has deficiencies with `RDATE` and `PERIOD` datetimes, causing variations from the basic event duration to be discarded Does not support the `COUNTER` scheduling method Does not support free/busy exchange over e-mail, but can be made to fetch free/busy data over HTTP

Notes

See RFC 5546 section 3.2.7 for details of the COUNTER scheduling method.