I had a licensing issue (too many sites for my license) and wanted to removed some old domains from the list. It would be great to be able to manage the licensed domains from my account, but that feature is not available just yet.
I did receive very quick & effective support to clean up the old domains. The plugin works very well and is a staple in my WP tool kit for any site that needs to reliably send out emails.
Customer service was helpful.
I am loving it.
The pay version works great!
I recently upgraded to Mail Booster, and it was a quick setup. Nice Design