I am creating a plugin in my website, where logged in users can view their emails. The Email Server I am developing against is Zimbra. So far, I have been able to successfully fetch and display user emails using PHP's imap_open function:
imap_open($server, $email, $password)
When a user clicks on an email link on the website, the user is navigated to the zimbra web client. However, the users will have to reenter their log-in credentials once more. I have checked my browser's cookie information, and have noticed that Zimbra sets a cookie, ZM_AUTH_TOKEN, when a user is logged in: I believe Zimbra uses this cookie to detect if a user is already logged in. In essence, my task is to eliminate this extra step of re-logging in; if there are open-source solutions, I would like to know about these as well.
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