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Answers for private customers

The Knowledge Base for private customers is already largely up to date. A few individual articles are currently being revised and will be updated shortly. We thank you for your understanding and look forward to providing you with the latest information on using mailbox.

Please note: The Knowledge Base has changed slightly. Categories have been adjusted and any URLs stored in the old Knowledge Base are no longer valid.

Mail Setup with Mozilla Thunderbird

Our servers are configured so that Mozilla Thunderbird can automatically detect the necessary settings based on your mailbox mail address.
Click on the link to create a new mail account on the Thunderbird start screen to set up your mailbox address:

Set Up mail Account in Mozilla Thunderbird

Follow this step-by-step guide to set up your mail account in Thunderbird:


Figure 1: Setting up an email address in Mozilla Thunderbird.

Step 1: Launch Thunderbird and Start Account Setup

  1. Open Mozilla Thunderbird.
  2. On the start screen, click “Create a new email account”.

You can also perform this step directly via Thunderbird’s application menu (three-line/hamburger menu). The wording may vary slightly depending on the Thunderbird version.

Step 2: Confirm Welcome Dialog (if displayed)

If a welcome dialog appears when opening Thunderbird for the first time, choose the option Skip this and use my existing email address.

Step 3: Enter Account Information

In the next dialog window, enter the following information:

  • Your name: The name that will appear as the sender
  • Email address: Your mailbox address
  • Password: Your mailbox password

Step 4: Automatically Detect Server Settings

  1. Click “Continue”.
  2. Thunderbird will now automatically detect the server settings.
  3. You can choose between the protocols IMAP (recommended) and POP3.

Step 5: Finish Setup

Click “Done”. Thunderbird will verify your information and complete the setup.

Use Email Aliases in Thunderbird

If you use multiple email aliases with mailbox, you can add them as additional identities in Thunderbird.

Step 6: Add Alias

  1. In Thunderbird, go to:
    Menu → Account Settings → [Your main account]
  2. At the bottom right, click on “Manage Identities…”.

Step 7: Enter Alias Identity

  1. A window with a list of identities will open.
  2. Click “Add…” and enter the alias address and desired name.

Step 8: Use Alias When Composing Emails

When composing a message, you can now choose the desired alias from a dropdown menu in the sender field.

Done! You’ve successfully set up your mailbox account in Thunderbird and can now flexibly use email aliases.