![thunderbird remove duplicate messages not working thunderbird remove duplicate messages not working](https://viralwolf.com/wp-content/uploads/2017/04/email-600x235.jpg)
- #THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING ARCHIVE#
- #THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING PRO#
- #THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING PLUS#
- #THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING MAC#
Interestingly, it took close to half an hour in Mail.app for my MacBook Pro (Core2Duo at 2.2GHz) to even select those 36,000 emails - be patient while the wheel spins! It then took nearly another hour to move them to the new folder and index them and their 6,000 attachments. I then repeated the import process and everything worked.
![thunderbird remove duplicate messages not working thunderbird remove duplicate messages not working](https://www.data-recovery-solutions.com/dit/img/screenshots/yandex-backup/2.png)
#THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING ARCHIVE#
So I went back to Mail.app and created a new folder, then dragged all the pre-27Oct07 emails (the remaining 36,000+) into it, and created another Archive mbox. Mail.app (on both my attempts) only created an archive mbox of about 4.3GB, which comprised some 43,000 emails the remaining 36,000+ didn't make it into the archive! Luckily, I found when I had imported these into Thunderbird that they were in date order, and that no emails were dated earlier than 27Oct07. Like the Thunderbird add-on, the Mail script searches for dupes inside one folder at a time.) I did hit one snag, because I had 80,000 emails in a single folder in Mail (I had moved them into one folder in the hope that I could run Andreas Amann's script all night. Then it took just two minutes to move about 13,000 dupes to the 'unneeded duplicates' folder I created.
![thunderbird remove duplicate messages not working thunderbird remove duplicate messages not working](https://www.cigatisolutions.com/images/screenshot/zoho-backup/5.png)
With each of my folders of about 40,000 emails, I had to wait roughly 30 seconds for the dialog box to appear. Move the dupes to a chosen folder (e.g.This did an excellet job of correctly collating the two to five copies of each email.
#THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING PLUS#
What worked for me was ticking Message ID plus a few others, but unticking Size, Lines, CC and Body. I ran some tests with a small collection of dupes until I had these right. Set its prefs for email matching criteria (in Thunderbird » Prefs » Manage Add-Ons) according to what works for you. After I did this, I did wait a long time for the Spotlight indexing in Thunderbird to finish - not sure whether this was necessary, but I suspect it probably was. I think my use of Path Finder (instead of Finder) helped a bit here.
![thunderbird remove duplicate messages not working thunderbird remove duplicate messages not working](https://www.datarecovery.institute/wp-content/uploads/2018/01/6-768x456.png)
#THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING MAC#
Note: The following process needs to be done for each folder that resides in the On My Mac section of Mail. This makes using Thunderbird permanently quite tempting.) Ironically, every stage except the actual analysis of duplicates takes ages. (It took several hours, because of the number of emails. I found the older version on the Thunderbird releases page. I had to use version 3.0 of Thunderbird, not the current version 3.01 (so thanks to those reviewers who reported that the add-on version 0.3.3 was failing with Thunderbird 3.01). The solution turned out to be the amazing add-on for Mozilla's Thunderbird called Remove Duplicate Messages (ALTERNATE). I looked at importing into Entourage, because there are some scripts to eliminate duplicates from there, but for reasons I shall not bore you with here, this proved a dead end. There was no way that this could go on, so I cancelled the process. I tried Andreas Amann's Mail Script for this, but, even though it was working OK, it only found about 200 duplicates in three hours, and was cooking my CPU at about 95%. I had most emails at least twice, and some up to five times. My mail.app emails got rather out of hand I won't bore you with how. I spent a lot of time searching this question, and this is the only solution I found that worked. This workaround, using Thunderbird, allowed me to successfully remove 30,000 duplicate emails (from a collection of about 80,000 emails) in OS X's Mail.app.