I've worked with Opensend in two roles and 3 brands now. The reps are super responsive, really helpful, and the process was smooth and easy. The results speak for themselves.

The cost per email address is very reasonable and seem to be of very good quality

I like that Opensend offers a 'set and forget' kind of experience, making it very convenient to use without constant oversight. The whole suite is great and very easy to set up, which makes the initial setup pretty easy.