Rated 3 out of 5 stars

Ook al zijn er duplicaten zichtbaar, melding geen duplicaten gevonden !!!

Rated 1 out of 5 stars

Quando funzionava, era molto utile...ora sulla 78.xx fa i capricci, almeno su ubu64...quando avrò tempo, cercherò di debuggarlo...

Rated 5 out of 5 stars

This add-on works great with Thunderbird 78.9.0 on a Mac running Catalina.

Like others, I got zero results at first. Fixes:
- Restart Thunderbird
- Tools > Add-on Options > Remove Duplicate Messages and change filter settings.
Under "General Settings" I left all defaults on. Everything checked. Default action "Move to Trash"
Under "Message Comparison" I kept *everything* checked except Size (important!) and Folder and set "Time Comparison Resolution" to Seconds.

Found 7K duplicates. Created a duplicates local folder and dumped them there. Yay!

Rated 1 out of 5 stars

Finds exactly zero duplicates :(

Rated 5 out of 5 stars

in th 78.6.0 ha funzionato benissimo.
La libertà di scegliere quali criteri usare per considerare due email uguali e pericolosa ma utlilissima!!!
;-)
Io l'ho usato per sfoltire alcune cartelle, usando solo il "subject" come ciretrio di uguaglianza.
Che per altro è la ragione per cui mi ero messo alla ricerca di addon.

Rated 1 out of 5 stars

Ne fonctionne pas avec TB 78(.8.1)

Rated 1 out of 5 stars

Why installation requires full access to anything on my computer ?!? See https://support.mozilla.org/ru/kb/permission-request-messages-thunderbird-extensions

This user has 3 previous reviews of this add-on.

Rated 5 out of 5 stars

This worked very well for me, Thunderbird 78.8.0 on Windows 10. I did have to tweak the settings a bit following the advice in the other reviews. I found it surprisingly fast finding the dupes.

Rated 1 out of 5 stars

This will not install on my TB 78.7.1 (32-bit). It complains that the file is corrupt. I've tried this a few times over a couple of weeks. Always says the download is corrupt.

Rated 5 out of 5 stars

It works on TB 78.7.1 _IF_ the settings are right.
Go to Extra->AddOnSettings->RemoveDuplicate

In the right panel (comparison settings) i had to set:
- compare adresses
- From
- To
- CC to
- Status
- Message ID
- Number of lines
- time of sending
- Subject
- Message Text

Unset:
- size
- folders

Comparison time: Minutes
(Items Translated from the German version)

Would be nice if the add on would have a basic working setup.

Rated 1 out of 5 stars

I agree with alex912. It does nothing on T'Bird 78.8. I have used prior versions for years successfully, but not now.

Rated 2 out of 5 stars

Unfortunately this tool does not appear to do anything at all. There does not appear to be any documentation.
I tried the suggestions found in other reviews. Regardless, it always immediately says no duplicates found, before it has time to search, and I know that is not correct.
Very disappointing as I need a tool to remove duplicates.
Please let me know when there is documentation available and the tool works.
If and when it does work, I would like to donate for it.

Rated 1 out of 5 stars

Doesnt work at all with Thunder 86

Rated 5 out of 5 stars

Thunderbird 78.7.1
It Works Fine read 'nothings review' 30 Nov 2020 to use.
Ie the configuration panel is found via :
Top Menu --- Tools - Add-on Options etc

Rated 1 out of 5 stars

Doesn't seem to do anything; doesn't even say whether or not duplicates were found.

I'll come back and upgrade to 5 stars if it is updated and works

Rated 1 out of 5 stars

Appears to do nothing at all.

Rated 2 out of 5 stars

Add-on nearly useless because not configurable - just no such page as "Options" for this add-on.

Rated 3 out of 5 stars

This add-on is necessary, but it misses important features. Assuming somebody has many folders, finds > 2000 duplicates, a way to select specific folders to keep the e-mails from is needed. First or last copies doesn't help as the folders are not listed in a ordered fashion, so in one duplicate item folder A comes first, then B, but in other duplicate item folder B comes first, then A. Selecting a range to change the choice does not work either. It's a pain to take them one by one.

Rated 5 out of 5 stars

Try this if it didn't work :
(1) From Menu Bar, choose Tools / Add-on Options / Remove Duplicate Messages
*** If your Menu Bar is hidden, click on the Three Lines Icon on the right side of the Search Bar, then choose Customize and check the Menu Bar
(2) Go to Message Comparison tab, and try to change the elements used as the comparison criteria, and then click OK
*** In my case, I unchecked the Size element
(3) Run the Remove Duplicate action

Rated 5 out of 5 stars

I need a duplicate remover for a special folders (sent, ...)
Thank You!