This guide will help you fix errors in the setup of an email account in Thunderbird.

Is this the first time you’re setting up this email account? Then use our new email setup guide, rather than this Thunderbird email troubleshooting guide.

Replace with your domain name

Check existing account settings

1. Launch Mozilla Thunderbird

2. Choose the relevant account tab on the left, and then choose View settings for this account

Thunderbird email troubleshooting

Select Account Settings

3. Choose Server Settings to view the Incoming server settings



Check your Server Settings

4. Check that the server settings are correct:

  • Port is 143 (or 110 for POP)
  • User Name is the full email address
  • Connection Security is None
  • Authentication is Password

Select Outgoing Server


Select Outgoing Server

5. Select your outgoing server from the list and select Edit…

Check SMTP Server Settings

6. Ensure that your settings are the same as the screen below then select OK

Select OK

7. You can then select OK again. Your email account is now set up correctly.

Still struggling? Refer to our guide of common email problems or contact

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