Mozilla Thunderbird is a separate, PC based mail client. It works similarly to Mozilla Mail, but does not include the web browser component, and so can be combined with a web browser of your choice. (See Importing your Addressbooks for instructions on bringing addressbooks over from Netscape/Mozilla; for more information about using Thunderbird, see "Customizing and Using Thunderbird": http://www.lehigh.edu/computing/docs/thunderbird/thunderbirdmail.html)
The Installation client can be downloaded from the web page: http://www.mozilla.org/products/thunderbird/ by clicking on the Download Now icon.
Save the installer program to your My Documents folder.
To install Thunderbird, open your My Documents folder and
double-click on the Thunderbird Setup program:
The setup window will open.
Click Next to continue.
Click the radio button for "I accept the terms of the License Agreement," then click Next.
Choose Standard installation, then click Next.
Click Next to continue.
The Installer will show a progress window for a few minutes, and then display the "Installation Complete" page.
Click Finish.
Setting up Mozilla Thunderbird for your mail.
When you open Thunderbird, it will prompt you to set up your mail account.
Choose Email Account, and click Next.
In the Your Name field, type in the name you want attached to mail from this account.
In the Email Address field, type in your Lehigh email address (with @lehigh.edu).
Click Next.
For the Server type, choose IMAP.
For Incoming Server, enter mail.lehigh.edu.
For Outgoing Server:
Click Next.
Enter your Lehigh username (just the 4-6 character ID).
Click Next.
Enter a name for the account. If more than one person is using the computer, you will probably want to specify their name; if you are accessing more than one account through Thunderbird, you will want to specify the name of the account. Otherwise, "Lehigh Account" works fine.
Click Next to continue.
Click Finish.
Though you are ALMOST finished, there's another step.
When Thunderbird opens, it will give an error message:
There is one more configuration step to take. Click OK.
Go to the Tools menu, and choose Account Settings.
Under the name of the Account, click Server Settings.
Click the box for 'Use secure connection (SSL)'.
We also suggest changing 'when I delete a message' to 'Mark it as deleted' and click 'Expunge Inbox on Exit', as well as turning off 'Check for new messages every 10 minutes.
Click the Advanced button.
In the IMAP server directory box, type mail/
Click OK.
Click OK to get out of Account Settings.
Click OK.
You should now be able to log in and check your email through Thunderbird!
In the Tools menu, choose Options:
In the left column, click on Composition
: 
Click the check box for "Directory Server."
Click the Edit Directories button:
Click the Add button
In the Name field, enter Lehigh
In the Hostname field, enter ldap.lehigh.edu (that's LDAP)
In the Base DN field, enter dc=lehigh, dc=edu
Click OK.
Select Lehigh in the LDAP Directory Servers list, then click OK.
In the drop-down menu next to Directory Servers, choose Lehigh.
Click OK.
You may wish to import your addressbooks from other mail clients.
See "Customizing and Using Thunderbird": http://www.lehigh.edu/computing/docs/thunderbird/thunderbirdmail.html
jahb, last updatedFebruary 28, 2005