What is the actual minimum length of an email address as defined by the IETF?

Question

I\'m specifically looking for the minimum length of the prefix and domain.

I\'ve seen conflicting information and nothing that looks authoritative.

For referen

Answer 1

Many mail-servers will not accept the email-address if there aren't at least 2 characters before the @. That doesn't make it an invalid address, but if the servers don't know that, it sure can lead to a lot of problems.