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

I believe the standard you are looking for is RFC 2822 - Internet Message Format

More specific info on email address restrictions in RFC 3696 - Section 3

To quote the spec:

Contemporary email addresses consist of a "local part" separated from a "domain part" (a fully-qualified domain name) by an at-sign ("@").

So three characters is the shortest.

I originally got this info from Phil Haack's blog post.