allow additional special characters in the local part of email validation

In the email validation plugin, please allow additional special characters in the local part of email address (the part before @) as valid per RFC standards, i.e. allow the following: !#$%&'*+-/=?^_{|}~`

At minimum, please allow the plus sign as it's used by users for tagging (e.g. if my email is example@gmail.com, I may use example+financial@gmail.com for financial purposes, e.g. when creating a login with my banks). Anyway, the plus signs are more common than folks think.

The solution is pretty simple - file to update is: <website root>/plugins/cck_field_validation/email/email.php and the line of code is: protected static $regex = '/^([A-Za-z0-9_+\-\.\'])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,10})$/'; which could change to protected static $regex = '/^([A-Za-z0-9_+\-\.\'])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,10})$/'; for the plus sign change.

Thank you so much!

Octopoos / SEBLOD

allow additional special characters in the local part of email validation #688