Need help modifying a working mod rewrite

I need it to support emails

[formasfunction]

I currently have the following rewrite working on my machine:

RewriteRule ^([^/\.]+)/([^/\.]+)/?$ $2.php?user=$1 [L]

I want to modify it so that the first pattern could be an email address. Right now it's tossing an error which I'm sure is due to either the "@" or the "." I'm just not all that good with regex

[formasfunction]

Nevermind, got it working. I just needed to take out the exclusion of the period:

RewriteRule ^([^/]+)/([^/\.]+)/?$ $2.php?user=$1 [L]