Email Length Limits and Validation

Knowledge Articles
1

Overview

This article will provide details on the limit of characters for an email, detailing the specific limits for each part of the email address.

Applies To

  • Emails
  • Login

Solution

The rules for the email validation length are as follows:

  • The full email address is limited to 254 characters.
  • The local portion is limited to 64 characters.
  • The domain portion is limited to 254 characters.
  • Each label within the domain portion is limited to 63 characters (e.g., for the email example@a.b.c.d.com where a, b, c, d, and com are the labels of the domain).
  • gmail.com and googlemail.com have an additional limitation. The local part before the “+” has a minimum length of 6 and a maximum length of 30.