PIMAP: Protocol Highlights|
Extension commands allowing clients to:
Set notification mode (in-band, out-band) and device address – XSETPIMAPPREF/XGETPIMAPPREF
Set view and notification filters - XFILTER
Send out messages - XDELIVER
Exchange compression capabilities
Combine oft-used groups of commands into macros.
Support for various bindings to underlying protocols, for instance:
PIMAP over HTTPS [Mandatory]
PIMAP over TCP.
Any other network optimizations can be used
Support for multiple notifications mechanisms:
In-band notifications (e.g. within HTTP or TCP bindings).
Out-band notifications (e.g. SMS, WAP Push, …).