Good java webmail applications [closed]

Question

Are there good java webmail applications, that can be used to connect to standalone imap servers?

Something like roundcube but that can be deployed in an application server.

Thanks

Answer 1

(Updated 2019 for current state of referenced projects)

Some open source solutions can still be found here:

JWebMail (last release 1.0.1rc1, 2008-10-31, files)

jwma (Java Webmail) (last release 2.6.4, 2018-11-09, files)

Gatormail (last release 1.0.11, 2004-05-03, files)

Claros inTouch (last release 2.1, 2007-06-10, downloads are gone but still on archive.org)

yawebmail (last release 1.2.5, 2008-12-15, files)