faxmail(1) on Linux
The text 52d3608b9530, as Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it.
HylaFAX mail-to-fax gateway application
Flags it lists
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-1 -
-2 -
-M -
-N -
-R -
-T -
-c -
-n -
-r -
-v