Hi, We are glad to announce that we have added SSL/TLS as well as SMTP AUTH support for Exim and Dovecot. By default the self-signed certificate generated by Webuzo will be used to configure SSL/TLS but if you are using any 3rd party or Let's Encrypt certificate for Webuzo panel then that certificate will be used. We have also enabled SMTP AUTH by default so that all accounts must verify themselves with the mail server before sending any emails. You can refer this guide to configure your email account with Thunderbird: https://www.webuzo.com/wiki/Email_Account_Mozilla_Thunderbird And refer this link to configure your email account with Outlook: https://www.webuzo.com/wiki/Email_Account_Outlook We will be adding more guides in the coming weeks for Web-based email clients like: WebMail Lite, RoundCube and RainLoop The Next release of Webuzo i.e 2.7.1 will include a GUI manager to configure certificates for Email SSL/TLS. Let me know if you have any questions in the comment section, I will try to answer as many as I can. Regards, The Webuzo Team