Need not be. The important thing with mutt is that it's standards compliant, it helps follow the conventions of these communities, and as a plus it's easily co

Need not be. The important thing with mutt is that it's standards compliant, it helps follow the conventions of these communities, and as a plus it's easily configurable and scriptable. If there are GUI tools that bear the same properties, they are equally viable (AFAIK Claws comes close).