From CIT Wiki

Setting up Thunderbird on Mac OS X or Windows with ObieMail

Downloading Thunderbird

1. If you don’t already have Thunderbird on your computer, go to the Thunderbird download page.
2. Click the green button in the center to download Thunderbird.
   • For Windows: Double click the Thunderbird Setup.exe installer to start the install.
   • For Mac OS X:Double click the Thunderbird.dmg.dz Disk Image to uncompress and mount it. Note: Your browser may have already done this for you. Double click the Thunderbird Disk Image to open it in Finder and drag the Thunderbird application to your Applications folder. Do not double click the icon in the disk image! Be sure to drag the Thunderbird application out of the disk image and onto your Hard Disk before running it. Drag the icon from Applications to your Dock if you want it to appear there.

Setting Up Your ObieMail Account in Thunderbird

1. Open Thunderbird. Go to File and select New and Account.
2. In New Account Setup, select Email Account and click Continue.
3. In Identity, enter your full first and last name, and your Email Address in the form Firstname.Lastname@oberlin.edu. Click Continue.
4. In Server Information, change the type from POP to IMAP. The Incoming and Outgoing Servers are both mail.oberlin.edu. Click Continue.
5. The Incoming User Name is the username you use to sign into ObieMail, typically it is the first letter of your first name and the first seven letters of your last name. Click Next.
6. Your Account Name, type "ObieMail". Click Continue.
7. Check to make sure the settings are correct and click Finish. It will then ask you for your email password.

SMTP Authentication and SSL for Thunderbird

Before your account will work properly, there are just a few more settings you need to change:

1. Select the Tools menu. Select Account Settings.
2. Select Server Settings from the left-hand sidebar. Select the radio button beside Use secure connection (SSL).
3. Select Outgoing Server (SMTP) from the left-hand sidebar. Server name should be mail.oberlin.edu Click Edit to the right of the server name.
4. Check Use name and password and make sure user name is correct.
5. Under Use secure connection, select TSL. (TSL works better than SSL for Thunderbird.)
6. Click OK.