Enable Logging In Thunderbird Print

Debug Thunderbird on Windows

To configure logging via a Thunderbird Preference, you must create a hidden Thunderbird preference, not an environment variable. In Thunderbird :

1. From the main menu go to Settings > General
2. Type config editor in the Find in Settings search bar
3. Click the Config Editor button in the search results
4. In the search field at the top paste or type the preference name for the service you wish to log:
   1. POP3 - mailnews.pop3.loglevel
   2. IMAP - mailnews.imap.loglevel
   3. SMTP - mailnews.smtp.loglevel
5. If you are presented with choices of Boolean, Number, String
   1. choose Boolean for true or false settings, otherwise choose String
   2. click the + (plus sign) to add the preference
6. Click the edit icon next to the preference that appears.
7. Change the value to All. This is case-sensitive & is often set to only Warn by default.
8. Click the tick button to save the new configuration setting.

Logging will be on until you reset or delete the preference again.

You do not need to restart Thunderbird as logging starts immediately.

To view the login output:

1. Main menu > Tools > Developer Tools.
2. Click OK to allow the debug connection.
3. Another window will open.
4. Click the Console tab.
5. Expose the timestamp for each entry by clicking the gear icon in the top-right of the Console and turning on Show Timestamps.

Perform the task/s that you want to log (e.g. sending email (SMTP), receiving email (POP3 or IMAP).

The logging information will appear in the console.

Once you have performed the task that you want to log, you can save the logging output by right-clicking any of the console messages and choosing Save all messages to file.

If asking Farbyte for support with an issue, attach this log to your Farbyte support ticket.