1 Add option -I to completely skip (remove) subparts -- no headers, no body,
5 Extend options -eIi to multipart subparts.
8 Never touch multipart/encrypted and multipart/signed (but allow -I).
11 Convert dates to the current locale and timezone (with an option?)
14 Allow -d and -p accept shell-like patterns and/or regular expressions:
15 -d content-*,-content-*-encoding
18 Add option --save-as='%format' to generate names for --save-* files. Develop
19 a DSL to conditionally use values of headers, parameters and the counter.