Once I understood everything about Mutant Mail, everything was so easy to set up. The process is intuitive. You just need to set up your domains' DNS entries and have them added and verified in MM. It's a set-and-forget kind of tool. ;-) Review collected by and hosted on G2.com.
The UI/UX could use some improvement. For example, when on the Settings page, if you need to update more than one setting, you have to go thru each of them and SAVE, and then everything refreshes, then update the other settings and SAVE and everything refreshes again. It would be much better if the settings are categorized and can be set up and updated in one go. Review collected by and hosted on G2.com.