The net-mail/mess822-0.58-r1 ebuild has been in portage for quite some time with the last modification over a year ago, but it is still marked unstable on AMD64. There are no open bugs for it, and I have been using the 822field binary of it on AMD64 since at least a year to handle all my email in a .qmail file. The package is also stable on x86 and ppc (the only other keyworded arches).
it merges fine, but it puts mess822.a into the wrong dir. I fixed the ebuild to put it in the right one. We'll wait at least a few days to see whether my fix broke something or not before marking it stable, although it is pretty trivial...
hrm, seems it's already stable