myContactForm.com - Help Forum

Ulysses · Joined: 09 Jul 2008 Posts: 5

According to standards, email addresses can be a maximum of 254 characters.

MyContactForm does not support this. It always creates email address with a maximum length of 100 characters. This is indicated by the maxlength="100" attribute of the input tag. There is no way to change this on Form Management.

Reference:
RFC 3696, Errata 1690:
"In addition to restrictions on syntax, there is a length limit on email addresses. That limit is a maximum of 64 characters (octets) in the "local part" (before the "@") and a maximum of 255 characters (octets) in the domain part (after the "@") for a total length of 320 characters. However, there is a restriction in RFC 2821 on the length of an address in MAIL and RCPT commands of 254 characters. Since addresses that do not fit in those fields are not normally useful, the upper limit on address lengths should normally be considered to be 254."
https://www.rfc-editor.org/errata/eid1690