Fart smell that travels several yards or more from the point of origin.
I ate nothing but burgers this weekend. I think I'll send some butt mail to the surrounding cubicles.
by Zonn Nilligan April 11, 2008
When your touchscreen phone emails someone while in your pocket. The message usually contains a lot of random letters. A slightly less awkward (but still awkward) version of a buttdial.
Oh no, my phone came unlocked in my pocket and buttmailed my boss!
by Musicman112RD February 18, 2011