Thunderbird is a free e-mail client available for many platforms. Thunderbird may be downloaded from the Mozilla website.
When Thunderbird is first launched, it will offer to import settings from other mail clients. Since this is a new configuration, no need to import anything.
Thunderbird will need to know what kind of account to create. This is an Email account.
Thunderbird will ask for your name and e-mail address.
Thunderbird will ask for the type of e-mail server this is. In this case, select IMAP.
Thunderbird will ask for the username for the IMAP server. This is the same as your UNIX account.
Thunderbird will ask for a label to call this account. The default is usually fine.
Thunderbird will give you a summary of the information you have given it. If there are any typos, correct them here by going back. Otherwise, hit Finish to save the account details.
DON'T PANIC! When Thunderbird first starts up, it will attempt to connect to the mail server using standard IMAP which doesn't work. We will need to change the protocol.
Go to Tools → Account Settings in Thunderbird. On the account that was just created, select "Server Settings". Under the "Security Settings" area, select the "SSL" radio button.
To send e-mail via Thunderbird, it must be configured to use SMTP with authentication over SSL. Go to Tools → Account Settings in Thunderbird. Select "Outgoing Server (SMTP)". Select the server "mail.titan-project.org" and select "Edit". Make sure under "Security and Authentication" the "Use name and password" checkbox is checked, and your user name is correctly filled out. Make sure the "SSL" radio button is selected under "Use secure connection".
Existing installations of Thunderbird just need to use SSL for IMAP and SMTP relay. To verify those settings, go to Tools → Account Settings in Thunderbird. Select the "Server Settings" for your account. Under the "Security Settings" area, select the "SSL" radio button. Select "Outgoing Server (SMTP)". Select the server "mail.titan-project.org" and select "Edit". Make sure under "Security and Authentication" the "Use name and password" checkbox is checked, and your user name is correctly filled out. Make sure the "SSL" radio button is selected under "Use secure connection".