support for name+tag at domain.com?

[Tamis Achilles van der Laan]

Hey guys,

Big fan of notmuch, using it in conjunction with astroid making it the perfect email system for me.
I have the following question, with gmail you can add tags to your email using the + sign, for example:

tamis+mytag at bisc.nl

When I send myself an email with this address notmuch doesn't automatically add the mytag tag, although the 
from address does include the +mytag. Is there some way to set this behavior up, should it not be there by default?

Regards