Restrictive Email Validation

2 points by edgwatson2 6y ago ↗ HN

My email is a@firstnamelastname.com. Often it isn't permitted when signing up to services. So I use a+[servicename]@ instead.

Why is this so? I've never seen/written validation rules before so I don't know why this happens.

Any other examples of regularly rejected email addresses?

1 comment

[ 4.1 ms ] story [ 11.6 ms ] thread

It seems highly likely that someone took upon themselves to decide that a single letter before the @ was not a valid email address (it is).

Many email validation functions/regex are also often simply copy-pasted from a google search and poor validation spreads that way...