nightly(1) should support custom From: in mail
Presently you can direct
nightly(1) to send its mail to an arbitrary e-mail address by setting the
MAILTO environment variable. It would be particularly convenient if one could also set
MAILFROM and have it (via the
-r flag of
mailx(1)) send the mail from a specified arbitrary e-mail address.
If one does not set
MAILFROM, then obviously
nightly(1) should continue to behave as it does now and use the default
mailx(1) send behaviour.