greep%su-dsn@sri-unix.UUCP (06/18/83)
MH has had this feature (calling a user's program to deliver mail for him) for quite a while, although it is used mainly to implement the "news" (bboard) feature. (In that case the program is a simple shell file.) One feature I added here is to allow local addresses of the form "user.mailbox", where what comes before the period is a user name and what comes after the period is passed to the user's program as an argument, so that a user can have his mail automatically processed according to what address is used. For example, I might want to have mail to "greep.unix" filed in my "unix" folder, and mail to "greep.header-people" appended to a file (say /dev/null).