mail.local(8) on FreeBSD
The text ff82572c856a, as FreeBSD 7.0-RELEASE, FreeBSD 6.3-RELEASE, FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE, FreeBSD 6.0-RELEASE, FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE shipped it.
store mail in a mailbox
Flags it lists
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-7 -
-B -
-b -
-d -
-l -
-n -
-s