You may see a blank window or page when you add your Thundermail account to Thunderbird. The fix depends on your Thunderbird version.
Not sure which version you have? Click on Thunderbird's top-right Menu button (☰) and select Help > About Thunderbird. A new tab will open that shows your version alongside a link to its release notes.
For Thunderbird 153 and newer
Signing in to Thundermail opens your default web browser. If you see a blank page there, reach out to our support team. Include your Thunderbird version, operating system, the web browser you use, and a screenshot.
For Thunderbird 152 and older
This usually happens when cookies are disabled in Thunderbird. To fix it, enable cookies:
- Click on Thunderbird's top-right Menu button (☰) and select Settings (⚙) > Privacy and Security.
- Make sure "Accept cookies from sites" is checked.
- Set "Accept third-party cookies" to "Always."
- Restart Thunderbird and try adding your Thundermail account again.
If you would rather enable cookies only for Thundermail sign-in and keep blocking other third-party cookies:
- Click on Thunderbird's top-right Menu button (☰) and select Settings (⚙) > Privacy and Security.
- Make sure "Accept cookies from sites" is checked.
- Set "Accept third-party cookies" to "Never."
- Under "Web Content," click "Exceptions…"
- Enter https://auth.tb.pro in "Address of website" and click Save Changes.
- Restart Thunderbird and try adding your Thundermail account again.
Seeing an error message instead of a blank screen? See Why won't my client connect to Thundermail?
Still having trouble? Try Thunderbird Troubleshoot Mode, or reach out to our support team. When you write to us, please include your Thunderbird version, operating system, the web browser you use, a screenshot, and what you've already tried.