It is very important to choose the right Email Service Provider, and it takes a lot of experience to pick the right one.
Some of the important factors that people do not pay attention to (but should) are:
-Make sure their service is really good, no bugs, and the delivery is great.
-Make sure their customer service is excellent
-Make sure the system is user friendly if you are not a programmer or an expert
And last but not least, make sure that the ROI is worth the price you are paying for.
If you closely look at all those features, you will most likelychoose Emailbrain.