I'm using Apache Commons e-mail validator and it refuses to accept email address like:
ąźóęł@email.com
so I would like to ask if it's right to not allow them or I should change validator?
+6
A:
http://en.wikipedia.org/wiki/E-mail_address#RFC_specification contains all the info you need: a link to the official RFC specs, which characters are good, etc.
drvdijk
2009-07-02 14:38:56
...and specifically it says that, without quoting, only roman letters [a-zA-Z], numbers and certain punctuation is allowed in the local-part.
Mark Pim
2009-07-02 14:43:48