The best thing about this service is that it's cheap, simple to use - you can send mass emails or targeted ones very easily with your own custom design templates! It also has great customer support who are always helpful in solving problems as they arise (including those pesky bugs!). I dislike how easy spam filters sometimes become too strict at times; however these issues don't seem enough of an issue for me not worth mentioning just yet though perhaps if there were more options availableβ¦