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Mozilla Thunderbird Macos



About Thunderbird for Mac Mozilla Thunderbird is a free, cross-platform email and news client developed by the Mozilla Foundation. The project strategy is modeled after Mozilla Firefox, a project aimed at creating a smaller and faster web browser. Thunderbird was created by Mozilla in 2004. It is a free, open-source email client that can be downloaded at Thunderbird.net. If you need help finding your username and other configuration settings, see our article, Setting Up an Email Reader. Setting up your Email for Thunderbird on OSX.

This content has been archived, and is no longer maintained by Indiana University. Information here may no longer be accurate, and links may no longer be available or reliable.
  1. Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features!
  2. Persistent sticky notes for Thunderbird associated to mails. In TB 78, you can define the note position in the settings. If you have a large screen, you can even display the notes outside of TB's main window, so it won't hide anything.
  3. Brief Overview of Mozilla Thunderbird for Mac OS X. Mozilla Thunderbird for MacOSX is an imposing cross-platform and open source email application which has been developed for a large scale users with various different email schemes ranging from the custom server-based mail to web mail users.

If this is the first time you are configuring an account in Thunderbird, a 'Mail Account Setup' window might appear. If it does, skip to step 3 and continue with the instructions. Also, if it asks to create a new email account, click Skip this and use myexisting email.

The IU Exchange Online environment does not support IMAP. See Configure your mail client for Exchange Online.
  1. In Thunderbird, from the Tools menu, select AccountSettings.
  2. In the sheet that appears, click Account Actions, and then select Add Mail Account....
  3. In the next sheet, next to 'Your name:', enter your name as you want it to appear in the 'From:' field of your outgoing messages.
  4. Next to 'Email address:', type your IU email address.

    If you are unsure of your exact IU email address, see Your IU email address.

  5. Next to 'Password:', enter your IU passphrase. Click Continue.
  6. In the next sheet, Thunderbird will attempt to guess your mail settings, but will fail. It will then allow you to manually enter your settings.
  7. In the pop-up menu next to the 'Incoming:' field, make sure that IMAP is selected. In the 'Server hostname' field, type imap.exchange.iu.edu. In the next field under 'Port', select 993. For 'SSL', choose SSL/TLS; under 'Authentication', select Normal password.
  8. Next to 'Outgoing:', under 'Server hostname', type mail-relay.iu.edu. In the field under 'Port', select 587. For 'SSL', choose STARTTLS; under 'Authentication', select Normal password.
  9. Next to 'Username:', type your IU username if it isn't already entered.
  10. Click Done or Create Account.

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To customize your settings, click the Tools menu and select Account Settings.

If you have difficulties sending mail from Thunderbird, try reducing the maximum number of server connections to cache to 1:

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  1. From the Tools menu, select Account Settings.
  2. In the section for your IMAP account, click ServerSettings and then Advanced... .
  3. Under 'Maximum number of server connections to cache', enter 1.

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To resolve other IMAP mail client errors, see ARCHIVED: If you have problems sending mail from your IMAP mail client.