I used this for emailing and have had great results.

Pros: Tons of features, including images with variable text
Works out of the box haven't had any bugs yet
Email rotation
Much More

Cons
The GUI looks like you're in windows 95 vs something like instantly and sendnow the first dashboard page is a search page for more contacts when it should be an overview of campaigns and stats. Team needs to look at instantly or sendnow