I accidentally removed this add-on and it is now not working and is not showing up what do I do?
Is there an extension or add-on that can search like the old Eudora does? The default search does not seem to search thru headers or all email messages This is important … (read more)
Is there an extension or add-on that can search like the old Eudora does? The default search does not seem to search thru headers or all email messages This is important for us when we need to find the Senders IP numbers so we can ban the spam emails
Dear Thunderbird Team, I am writing to report a critical issue with the Thunderbird Extension API where it returns stale, cached data instead of live folder contents for… (read more)
Dear Thunderbird Team,
I am writing to report a critical issue with the Thunderbird Extension API where it returns stale, cached data instead of live folder contents for Gmail IMAP accounts.
Issue Description The browser.messages.list() and browser.messages.query() APIs are returning outdated message data from 2016-2021, completely ignoring the actual current contents of my Gmail IMAP inbox. While Thunderbird's UI displays current emails correctly, the extension API serves permanently cached old data.
Evidence of the Bug What Thunderbird UI Shows: Current inbox with emails from today and recent weeks
Real-time folder contents
Proper folder synchronization
What Extension API Returns: Only 100 messages total (artificial limit)
Messages exclusively from 2016-2021
No emails from 2022-2025 present
Completely ignores current folder contents
Technical Details: Profile: /Volumes/Data/Mail Files/Thunderbird/Profiles/aq8q4la7.default-release/
Account: Gmail IMAP (imap.googlemail.com)
Folder: account1://INBOX
API Used: browser.messages.list(folderId) and browser.messages.query()
Steps to Reproduce Set up Gmail IMAP account in Thunderbird
Write extension using browser.messages.list() API
Compare API results with actual folder contents
Observe API returns stale cached data from years ago
Debugging Attempted We have tried:
Deleting all .msf index files
Clearing folderCache.json and global-messages-db.sqlite
Removing cache folders (cache/, cache2/, startupCache/)
Rebuilding folder indexes
Using different API methods (messages.query vs messages.list)
None of these resolved the issue - the API continues to return the same stale dataset.
Impact This completely breaks any extension that needs to access current folder contents, such as email tracking, automation, or filtering extensions.
Request Please investigate why the Extension API serves different (and outdated) data compared to Thunderbird's main UI, and fix the API to return actual live folder contents.
Thank you for your attention to this critical issue.
Best regards, Hasan
Hello, I wanted to create a script that doesn't allow me to disable a certain extension. For that I thought to locate the file in which the states of extensions are put. … (read more)
Hello, I wanted to create a script that doesn't allow me to disable a certain extension. For that I thought to locate the file in which the states of extensions are put. I searched online, and the answer appears to be that such file is available in extensions folder in my profile. However, I am unable to find extensions folder under my profile.
I would appreciate the help.
I've used Thunderbird with the Owl add-on for Exchange/Outlook accounts for several years. Recently I've found when I open Thunderbird on my laptop, a tab opens for each … (read more)
I've used Thunderbird with the Owl add-on for Exchange/Outlook accounts for several years. Recently I've found when I open Thunderbird on my laptop, a tab opens for each account, apparently showing the Outlook web page for each account. This is great, but on the same version of Thunderbird (140.3.1esr) on my desktop, that doesn't happen. I can't see how to open these tabs there, or even how to reopen one of these tabs on my laptop, except from Go->Recently Closed Tabs. Am I missing something? What controls this behaviour?