Is it possible to find out the reason why the mail is invalid?

[reponemec]

Is it possible to find out the reason why the mail is invalid? Some friendly message...
Thanks.

[Jeffrey Stedfast]

I suppose so. How detailed do you need it to be?

[reponemec]

Supposing "invalid" address "john [e-mail]". Then the validation error could be:

{
    "Code": "InvalidCharacter",
    "Description": "Invalid character {0} at {1}.",
    "Params": [" ", 4]
}

Translatable. Inspired a bit by IdentityError: https://learn.microsoft.com/en-us/dotnet/api/microsoft.aspnetcore.identity.identityerror?view=aspnetcore-7.0

[Jeffrey Stedfast]

Added