I’ve built packages for the replacement for PINE from UW. Alpine has removed some source constraints (important to some people, I guess), has some new features and otherwise seems to be an incremental upgrade on PINE. These packages were built on Solaris 10, so they should be fine on OpenSolaris / Nevada (Well, SXCE/SXDE) as well.
Please let me know if there are any problems with these builds. Click here for more information about Alpine.
UPDATE: Packages rev’d to include -passfile by popular demand. Grab ‘em again. Read the README file.