kuvert_submit(1) on Linux
The text 910434347835, as Debian 12 (Bookworm) shipped it.
MTA wrapper for mail submission to kuvert(1)
Flags it lists
-
-f -
-t
The text 910434347835, as Debian 12 (Bookworm) shipped it.
MTA wrapper for mail submission to kuvert(1)
-f
-t