The service is something I'd like to try but it's always left a bad taste in my mouth seeing how the free service will expose my email in dns records.

I'm a firm believer privacy and security should be a default and not a pay to unlock feature. With that in mind I never gave this service a chance and instead tried to use other competitors for email aliasing. [1]

[1]. (Simplelogin.io/ / Addy.io)