Use regular expressions to select valid email address

Question

I came up with the following

([\w.%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4})

I would also like to remove emails that start with a number or -. By remove I mean to select only the address and not to remove the entire match.

Is there a way to do that?

So that we know this isn't a duplicate, could you edit your question to clearly show which types of email addresses are valid and which are not? — Tim Biegeleisen, Sep 26 '16 at 15:08
Addresses starting with numbers are valid. I just created one with my convenient web application that allows users to easily create mail aliases: `[email protected]`. Please read the relevant RFC's, starting with 822, about what is valid e-mail syntax. About the only RFC feature you might think about rejecting is the use of comments. (Yes, e-mail addresses can contain comments, which is text enclosed in parentheses!) — Kaz, Sep 26 '16 at 15:11

ThePerplexedOne · Answer 1 · 2016-09-26T15:19:36.573

0

^(?:\d+|-+)?([\w.%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4})$

This should do the trick. It'll capture emails but also filter out ones that start with a number or the - character and pulls the email from it.

edited Sep 26 '16 at 15:19

answered Sep 26 '16 at 15:11

ThePerplexedOne

This will not match quite a few of the existing TLDs (like .weatherchannel, or .americanexpress) nor any internationalised TLD. – Vatine Sep 26 '16 at 15:25
Hey, first of all, thanks a lot. This will not work for me if I'll get an email like this [email protected] or even like this [email protected]. how can I make it to not select that initial sequence? Thanks – A.S.F Studio Sep 27 '16 at 06:24

1 Answers1