Thunderbird Duplicate Contact Manager

I reviewed a Thunderbird extension to remove mails yesterday. Today, I'm going to review an extension that finds duplicate contacts in the address book of the email client instead.
The add-on handles one address book currently which is a little unfortunate but the author promises to integrate functionality that enables you to check all address book instead. So, you can only search for duplicates in a single address book, and not in all of them.
Duplicate entries can appear in several different ways. A common one is a corrupt address book file for instance, but it can also happen when someone sends you emails from different mail accounts.
Duplicate Contact Manager

You can use the Duplicate Contact Manager to merge those information by adding the second email address to the first address book entry, and by deleting the second record afterwards so that only one entry remains containing all the data.
The add-on window can be launched by opening the address book in Thunderbird and clicking on the - newly added - Duplicates menu and there on the Find and manage Duplicates entry.
The process takes a while and is semi-automatic. There is no information how the extension compares the address book entries but my understanding is that it compares several parameters such as the display name, first and second name, or email address, and displays those entries if it finds a match.
This does mean however that you will get lots of matches for popular first names such as John or Mary. Takes a while as well depending on the amount of contacts in your address book.
The program works with contact pairs only. What this means is that it will always displayed a first and second contact set next to each other that it believes to be duplicate.
You can skip any if you come to the conclusion that it is not a duplicate, or merge the two sets right away instead. Here you can select to keep the first or second contact before you hit the apply and continue button.
Verdict
Duplicate Contact Manager is a useful extension for the Thunderbird email client. While there is no need to run the extension constantly, you may want to run it whenever you discover duplicate contact entries in one of your address books.






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!