javax.mail.internet.InternetAddress本地部分的UTF-8

Question

I'm searching for a solution to send a mail to UTF-8 encoded mail-addresses. The domain-part is no problem, because I can encode it using punycode and send it then.

But how do I handle the local-part of a mail-address? For example I want to send a mail to müller@testdomain.com? javax.mail.internet.InternetAddress says, that this is not a valid address.

Any suggestions?

Answer 1

Javamail does not support SMTPUTF8 (as defined in RFC6531, local part ), shown by the still open Bugreport . A quick search did not bring up another supporting Java library. Apache Commons Email eg also depends on Javamail.

Update: JavaMail 1.6.0 which now supports internationalized email addresses (RFC 6530/6531/6532) is released since July 2017. Apache Commons Email 1.5 (August 2017) unfortunately still depends on JavaMail 1.5.6 .

Answer 2

Have you tried if URL encoding works? So it would become: m%C3%BCller@testdomain.com .