Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

many duplicate emails

  • 3 replies
  • 6 have this problem
  • 1 view
  • Last reply by Larrydeb

more options

Yesterday multiple duplicate emails downloaded to my inbox. I have 10 emails of the same subject! My inbox is a complete wreck and now has 1450 emails. 1000+ of those downloaded yesterday starting with July 3 2022 to the present.

Please help! Why did this happen? How can it stop? Is there a way to clean my inbox up easily?

Yesterday multiple duplicate emails downloaded to my inbox. I have 10 emails of the same subject! My inbox is a complete wreck and now has 1450 emails. 1000+ of those downloaded yesterday starting with July 3 2022 to the present. Please help! Why did this happen? How can it stop? Is there a way to clean my inbox up easily?
Attached screenshots

All Replies (3)

more options

pop or imap accounts? What AV software are you using?

more options

I have exactly the same problem and it's POP accounts, Happened around the same time, 3-4 weeks ago after I applied a Thunderbird update.

Seems I'm not alone, I am seeing a few reports of the same or similar problems in the last few weeks.

more options

I have 2 emaIL accounts and both have the same problem with duplicates, one account is POP3 and the other is IMAP and both are getting thousands of duplicate emails. I have run the "Remove Duplicates" add-in over & over as well as the Repair Folder command, but the files are immediately replaced. I current have over 40,000 unread emails in my 2 accounts and I think it's a major problem. I tried to reduce the problem by using Message Filters to send some email sources to Trash but it's hardly haling/. I hope someone is working on a fix for this but i haven't seen any signs that they are. Maybe someone can tell me when they get a fix?, because the Remove Duplicate add-in is not getting it done?

Modified by Larrydeb