email marketing subject/swipe file

eliquid

Serpwoo.com
May 10, 2007
7,207
205
63
A/B Testing
is there any good reads on the subject from our fellow bloggers?

im looking into the some solid info on the subject. I know testing is best and I am currently doing that, just didnt know if anyone has written a blog post on this yet with some good info in it.