On 14 Sep 2022, Wilfred van Velzen said the following...
 Wv> Also since FMail is Win32 only now. The specific Compression/32 and
 Wv> Decompression/32 were removed. You can just use the Compression and
 Wv> Decompression settings. I guess the docs need to be updated to fully
 Wv> reflect this.
 Wv> 
 Wv> I use these settings:
 Wv> 
 Wv> ARC   arc a
 Wv> ZIP   zip -jq9
 Wv> LZH   lha aif -q1


Thanks mate.  Works good now.

... This virus requires Microsoft Windows 3.x

--- Mystic BBS v1.12 A47 2021/12/24 (Raspberry Pi/32)