Regex for validating multiple E-Mail-Addresses

Question

I got a Regex that validates my mail-addresses like this:

([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]

Answer 1

Something I've written in my days. Basic email validation is taken from practical implementation of RFC 2822

^([a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])(;)?)+$

matches emails with ; separator

I you want more separators, swap (;)? with [;,|]? within the [] brackets.