Longtime Mint stickler here, never developed a taste for any other distro schools (Arch, Fedora, other *buntus and Debians). But tried out MX after a long period of deferring and I am genuinely blown away. This distro has everything I could have ever ask for - Debian stability coupled with advanced hardware support (with more recent zen kernels and drivers), a solid opinionated Plasma DE setup that is both minimalist and all-encompassing at the same time, and a full stock of sensible and pragmatic utilities to cover the boring stuff.
Mint's relative lethargy at migrating to wayland has been increasingly becoming a sore point due to the sheer practical difference it makes (especially in terms of multi-monitor HiDPI and fractional scaling, in addition to security and performance). MX KDE has all that covered and then some. It's the first time I had to genuinely stretch to find any fault. The only complaint I have is that they aren't letting me post this testimonial in the MX forum because it doesn't accept anon-aliased emails for logins.
addy.io is the one I'm using
In case you want to try some others:
https://simplelogin.io/
https://relay.firefox.com/
https://www.33mail.com/
https://erine.email/
Unfortunately, some misguided (or possibly malicious) people collect email forwarding domains like these and publish them in lists dishonestly advertised as spam or disposable address lists. An unfortunate number of web developers have taken to using these lists, leading to the situation you're in now.
The best suggestions I can offer: