Office 365 (Thunderbird) - Create an email message

Best Effort Support Only

This document contains instructions on using a non-Microsoft email client, such as Apple Mail or Thunderbird. Microsoft does not recommend these clients for use with Office 365, and there are often significant limitations in client functionality as a result.

Because of this, the DoIT Help Desk is only able to offer best effort support for these clients, and certain issues may require the use of a Microsoft client in order to be resolved. For more information on Office 365 client support, please see: Office 365 - Which clients/protocols will be supported?.

Creating a message is as simple as clicking the Write button on the top bar.

Note: The screenshots in this document are from a Mac, the actions are the same across operating systems though the appearance may be slightly different.

  1. Open Thunderbird
  2. At the top left of the window, select the Write button.

    Write button

    • To send the message from an account other than your default account, click the From field and select the desired send account.

    Tip The keyboard shortcut to create a new e-mail message is Cmd key + N on a Mac and Ctlr + N in Windows.

  3. In to the To field, type the names or addresses of the recipients who you are sending the message to.
    • Thunderbird will automatically display names of your stored contacts and recently used addresses.
    • Toggle between To, Cc and Bcc using the To box to the left of recipient names

      To - CC - BCC selection

  4. In the Subject box, type the subject of the message.

    Subject Box

  5. Compose your message and then click Send in the upper left of the message pane  send button