Webuzo is ported with SquirrelMail as the default web-client to access emails. SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers. It has very few requirements and is very easy to configure and install. SquirrelMail has all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation. It is deployed along with Exim - the SMTP Email Server, which can be installed by a click from the Webuzo Enduser Panel >> Apps >> Utilities Category Guide : http://www.webuzo.com/wiki/Install_System_Apps Accessing SquirrelMail is as simple as a pie with Webuzo. Guide : http://webuzo.com/wiki/Access_Emails Issue # 1 You can face the "Error connecting to IMAP server: example.com. 111 : Connection refused" Error id Dovecot service is not installed on your server. Fix for the same is to quickly install Dovecot by a click from the Webuzo Enduser Panel >> Apps >> Utilities Category Guide : http://www.webuzo.com/wiki/Install_System_Apps Restart the Dovecot Service to avoid other issues: Guide : http://webuzo.com/wiki/Restart_services From the command line: service dovecot restart Issue # 2 For instance you may face an error as follows while logging in to the web-client, which is related to inappropriate permissions for the attach and data directories. Execute the following commands from your terminal as a root user to fix the above issue. chown -R emps:emps /var/local/vmail/attach/ chown -R emps:emps /var/local/vmail/data/ That's it !!! Simple enough !!! Issue # 3 You can also come across a "Temporary Failure" Error while sending emails from SquirrelMail Quick Fix for the same is to restart the Dovecot and Exim services. Guide : http://webuzo.com/wiki/Restart_services From the command line: service dovecot restart service exim restart Demo : Admin Panel : http://demo.webuzo.com/ Enduser Panel : http://demo.webuzo.com/enduser/ Support : https://www.softaculous.com/support/open.php?