Registered Users who miss confirmation email, cannot progress

[sannip]

When a user registers but doesnt receive or lost the confirmation email, Is there a way to re-trigger the confirmation email ?

We have issues where the user sometimes doesn't receive the confirmation email. If user tries to register again, he gets an error message saying username is already taken. Also, he cannot use reset password function, because the email isn’t verified.

Is there any way that the user can proceed to use his account?

Appsettings that we use are as below.

"IdentityOptions": {
        "Password": {
            "RequiredLength": 8
        },
        "User": {
            "RequireUniqueEmail": true
        },
      "SignIn": {
        "RequireConfirmedEmail": true,
        "RequireConfirmedAccount": true
      }
    }