Thank you for the plugin.
I have a registration without activating an account, so it is very important that the mail address is correct.
When setting up, I encountered such a problem. The most common mistake made by users is entering extra or incorrect characters in the gmail.com domain.
For example: @1gmail.com,@ggmail.com,@hmail.com etc.
Can I restrict domains *gmail.com and for gmail.com to be allowed ?