![]() ![]() This makes using Thunderbird permanently quite tempting.) Ironically, every stage except the actual analysis of duplicates takes ages. Note: The following process needs to be done for each folder that resides in the On My Mac section of Mail. (I will have more to say about that soon.) #THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING MAC# Use Mailbox » Archive Mailbox in Mail.app to create a proper mbox export file of the mail folder you want to de-duplicate.(The mailboxes that Mail keeps in the Mail folder inside your user's Library, with their extension. Follow these instructions to import your newly-created mbox file quickly and easily into Thunderbird.I think my use of Path Finder (instead of Finder) helped a bit here. 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. Set its prefs for email matching criteria (in Thunderbird » Prefs » Manage Add-Ons) according to what works for you. I ran some tests with a small collection of dupes until I had these right. What worked for me was ticking Message ID plus a few others, but unticking Size, Lines, CC and Body. #THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING PLUS# 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. With each of my folders of about 40,000 emails, I had to wait roughly 30 seconds for the dialog box to appear. Then it took just two minutes to move about 13,000 dupes to the 'unneeded duplicates' folder I created. 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. 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. 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. #THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING ARCHIVE# I then repeated the import process and everything worked. 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. #THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING MAC#.#THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING PLUS#.#THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING PRO#.#THUNDERBIRD REMOVE DUPLICATE MESSAGES NOT WORKING ARCHIVE#. ![]()
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