pine

pine is a MUA available from the ​university of washington. It is considered non-free because its license doesn't allow free modification and redistribution.

debian works around this by providing a package called pine-tracker which compares the current version of pine (from UW) with the one on the system and nags the sysadmin to update directly.

ubuntu doesn't seem to bother with this package, and just shuns pine altogether. Since many completely free MUAs exist, this seems like a reasonable strategy.

Does anyone at CAL really need pine specifically instead of using one of the other available MUAs?