7 Add-ons To Get You Started With Thunderbird 3

Thunderbird 3, which is currently available as a beta version, promises to be an excellent desktop email program far superior to the current version. The program comes with many exciting features like powerful search options, archiving, tabbed email reading or message summaries.
Most of the add-ons that are currently available at the Mozilla Thunderbird website are not compatible yet with Thunderbird 3. The following seven add-ons on the other hand can already be used with Mozilla Thunderbird 3.
Update: Thunderbird 3 is no longer the latest version of the email client. We have updated the list of add-ons that you find below to make sure that they are compatible with all recent versions of Thunderbird. End
The compatible extensions
gContactSync [link]
This add-on makes it possible to synchronize contacts between the Thunderbird email client and one or multiple Gmail and Google accounts. The add-on syncs all contacts and groups.
Remove Duplicate Messages [link]
Duplicate emails are usually experienced during connection errors or if the mail program or mailboxes got damaged. This add-on cleans duplicate emails easily offering to move or delete them in the email program.
Recently added extensions
- Classic Toolbar Buttons -- The add-on restores the old Thunderbird toolbar buttons.
- Compact Header -- This adds a switch to Thunderbird to toggle between regular and compact headers in the email program.
- Enigmail -- Add OpenPGP support to Thunderbird.
- Mail Merge -- Mail merge sends the same message to individual recipients so that you don't have to use the To, CC and BCC fields.
- Send Later -- Extension to schedule the sending of emails.
The old extensions
The situation will likely change with the final release of the email client. It is on the other hand likely that most Thunderbird add-ons will function correctly if their compatibility is edited manually or by using an add-on like the Nightly Tester Tools.
Buttons [link]
The Buttons add-on adds several new buttons to Thunderbird 3 including buttons to display the next or previous email (as opposed to displaying the next or previous unread email which is the default option in Thunderbird), SMTP server selection, delete junk button that marks the message as junk and deletes it afterwards, HTML and Image on and off buttons or a delete thread button that deletes the entire thread of messages.
Hide Menubar [link]
The Thunderbird 3 menu does not usually need to be displayed all of the time. Especially users with lower screen resolutions might be interested to save screen estate to work more comfortable in the email client. Hide Menubar is a straightforward Thunderbird 3 add-on that hides the Thunderbird 3 menubar automatically. The alt key can be used to switch between hiding and displaying the menubar.
Smooth Wheel [link]
Smooth Wheel offers the ability to fine tune the mouse scrolling smoothness in Thunderbird. The default smoothness does not satisfy many Thunderbird users (and actually Firefox users as well) and this is the add-on to customize the smoothness for a better experience.
FiltaQuilla [link]
FiltaQuilla adds new filters to Thunderbird extending the automatic email processing options in the email client. It is for example possible to launch or run a file, append to subject, train the email program as good or junk and mark the email as unread or replied.
Foxclocks [link]
Can display multiple clocks in the Thunderbird interface.
Know of any other Thunderbird 3 add-ons that should be in this list? Let us know in the comments.


You said that Outlook isn’t your main email client, so which is your main one?
I think its thunderbird
It is Mozilla Thunderbird.
Awesome! This actually solved my problem… what a stupid bug.
If this is the same bug that I’ve encountered, there may be another fix: (1) hover over open Outlook item in Taskbar, cursor up to hover over Outlook window item, and right-click; (2) this should give you Restore / Move / Size / Minimize / Maximize — choose Move or Size; (3) use your cursor keys, going arbitrarily N/S/E/W, to try to move or size the Outlook window back into view. Basically, the app behaves as though it were open in a 0x0 window, or at a location that’s offscreen, and this will frequently work to resize and/or move the window. Don’t forget to close while resized/moved, so that Outlook remembers the size/position for next time.
THANK YOU Claude!!! I could get the main window to launch but could not get any other message window to show on the desktop. You are my hero!!!!
Solved my issue! 6 years later and this is still problem…
Fantastic. Thank you. Size did the trick.
This solved my Outlook problem, too. Thank you. :)
Thank you so much, this started happening to me today and was causing big problems. You are a life saver, I hope I can help you in some way some day.
You are a god – thank you!
thanks a lot…. work like charm.. :-)
Yah…thanks Claude. I’ve been having the same problem and tried all the suggestions…your solution was the answer. It had resized itself to a 0/0 box. Cheers
Excellent post. This had me baffled even trying to accurately describe the problem. This fixed it for me.
Thank you
Thanks a lot for the article. Don’t know why it happenend, don’t know how it got fixed, but it was really annoying and now it works :-)
Thanks a lot. I was facing this issue from past 3 week. I tried everything but no resolution. The issue was happening intermittently and mainly when I was changing the display of screen ( as i use 2 monitors). The only option i had was to do system restore. But thanks to you.
I’ve been tried to sole this problem for 12hours. Your comment about changing the display of screen helped me a lot!! Thanks!!
Thank you…don’t know why this happened but your instructions helped me fix it. Running Windows 10 and office pro 2007
Great tip! Thanks!
Worked for me, too – thank you!!!
It’s Worked for me, too
thank you very much!
I had a similar issue with Outlook 2013 on Windows 10 and this helped me to fix it. Thank you very much!
Thank you so much. Solved!
Considering you published this in 2012, incredible not been debugged by Microsoft.
Thank you again. M
This problem was faced by only one user logging to TS 2008 r2 using outlook 2010.The issue was resolved.
Thanks.
Great tip. Thank you!!!! If it helps, I had to use the Control Key and the arrow keys at the same time to bring my window back into view. Worked like a charm.
Thank you, this worked !!!!
Man, you are a fucking god. Thanks a lot, what an annoying bug!!
Awesome, this post solved the issue. Many thanks!