opnsense-ports/mail/jamlib/pkg-descr

These are a collection of subroutines that encapsulate much of the
format-specific and tedious details of the JAM message base format.
The idea is that application programmers by using these routines can
concentrate on the more high-level issues of their programs instead
of worrying about their JAM routines.

WWW: http://sourceforge.net/projects/jamlib/