Handling possible typos in emails (@gamail, @hotnail .)

Question

Well, I have some problematic registrations because the user typed in: "josé@gamail.com".

From what I saw in this answer, most servers have disabled a possible ping with reply if the email exists, because of spammers.

What solution would you use in this case ?

I thought of creating a plugin where these errors are handled, for example:

let emailError = false;
let emailValid = false;
let emailInserido = this.emailInserido;


if ( emailInserido === "gamail" || emailInserido === "gmil" ... ) {
  emailError = true;
} else {
emailValid = true; }

Answer 1

There is no way to confirm if an email exists directly. That’s because, as you said, spam would run loose.

What should be done is to generate an activation code embedded in a link that is sent to the email, and that the user must follow (the link) to complete the registration. You’ve done this on multiple sites, as a user.

In relation to verifying the domain (what comes after @), there may be services that allow this verification (it is not possible for you to build this yourself for ALL existing domains). I do not know if it would compensate the work, the email with link for confirmation resolves.

Finally, think about using delegated authentication (accessing your system through a google account, facebook, etc.). It’s easy if the platform you’re developing has an API (I think so), and prevents the user from having to remember too many passwords.