Account email changing error

[Aleks_Vin]

Hello,

Sorry, I've not found any "good" Board for Account questions, but as I try to change my email on my S23, so it's here. 

I've tried to change my account email, but somehow Samsung says, "Enter a valid email". I've tried a couple of aliases, but no luck. What is wrong with tutanota.com and its domains?

I tried keemail.me, tuta.io, tutanota.com (they are all the same tutanota.com)

[Sombody3]

I haven't had much luck with samsung email in the past. I now just use Gmail. Maybe give that a try