Mozilla Thunderbird is a free email client designed by the not for profit Mozilla Foundation. It is the most popular free to download email client outside of those provided by Microsoft and Apple and is widely used throughout the world. Download Thunderbird VIDEO Before following the below step by step guide, please find the email sent to you which contains your email settings. Step by Step Guide In Thunderbird, click the burger menu in the top right. Select Account Settings . In the bottom left, select the Account Actions drop down menu and click Add Mail Account . Fill in your account details. Your Name: your name as you wish it to appear on outgoing email messages Email Address: your email address Password: your email address password When you have entered the relevant details, click Configure Manually, not continue. Check you have the following account settings: Incoming Server Protocol: IMAP Hostname: zimbra.protectedservice.net Port: 993 Connection Security: SSL/TLS Authentication method: Normal Password Outgoing Server Hostname: smtp.protectedservice.net Port: 587 Connection Security: STARTTLS Authentication method: Normal Password Username: Incoming and outgoing are your email address When you are sure these are correct, click Done. Account Successfully Created You may get a pop-up asking you to Add Security Exception, just click Confirm Security Exceptions and then Finish.