Like many people, I get a lot of mailing list mail, and I use the
animated Tux to notify me of new mail.
However, I do not want to open my e-mail program and retrieve
mail right away if there is nothing interesting at the moment.
At the same time, I'd wish Tux stopped dancing.
So it would be nice if there was a way to tell gnubiff "Hey, I've
seen this mail - it's not interesting, notify me when more
I'm using the --gtk switch version.