Mostly the affordable price. We have a weekly list of over 30,000 users, so by comparison to other services, we save hundreds every month on our distribution.
The free plan lets you sent mail to up to 5000 subscribers (vs 2000 with Mailchimp), and paid options start at a low $10/mo. There are several options for creating and customizing the look of your campaign. Non-techy users can take advantage of a...
Nothing to dislike really. Easy to set up and configure.
Implementing certain features didn't work like you expect