"Mark E. Mallett" <mem(_at_)mv(_dot_)mv(_dot_)com> writes:
...
Really... seems to me that procmail is the poster child for demand for
extra features. Most useful procmail scripts do all kinds of piping to
external programs to do things that can't be done inside procmail.
Sure, but that's because procmail was designed to be 'extended' via
the shell, just as sieve was designed to be extended via 'require'.
That procmail picked a extension method that allows arbitrary
computation may speak more towards the power of the UNIX tool model
than the needs of a mail filter.
Indeed, just a most procmail rcfiles invoke formail or $SENDMAIL,
I would guess that most sieve filters require 'fileinto' or 'vacation'.
Is your concern that sieve extensions require more developer or
admin action than procmail 'extensions'? Some would consider that
a feature, not a bug.
Philip Guenther