We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Suddenly appeared in my inbox more than 600 old emails as new, at the same time most of emails in the inbox disappeared. Huge gaps lost. How can I fix it?

  • 1 valiny
  • 1 manana an'ity olana ity
  • 1 view
  • Valiny farany nomen'i Toad-Hall

more options

I have not unified all my email accounts, I keep them separate. Some four months ago, in one of them the Inbox showed emails from 2015 and then... skip directly to 2019. I thought they were all lost but I could check they are all in the server. Somewhat Thunderbird deleted them from my inbox. No worries, it was just a little used mail account... but today it happened again. All of the sudden, the Inbox in one of my accounts showed more than 600 new (unred) emails, but these were as a matter of fact old emails, known to me. At the same time, I checked the inbox and found huge gaps in the email series... jumping months between one mail and another, so... Thunderbird did it again. I have read many troubleshooting advices but did not have the courage to explore because they were all different and was afraid to do some definitive damage to my old, lost emails.

I have not unified all my email accounts, I keep them separate. Some four months ago, in one of them the Inbox showed emails from 2015 and then... skip directly to 2019. I thought they were all lost but I could check they are all in the server. Somewhat Thunderbird deleted them from my inbox. No worries, it was just a little used mail account... but today it happened again. All of the sudden, the Inbox in one of my accounts showed more than 600 new (unred) emails, but these were as a matter of fact old emails, known to me. At the same time, I checked the inbox and found huge gaps in the email series... jumping months between one mail and another, so... Thunderbird did it again. I have read many troubleshooting advices but did not have the courage to explore because they were all different and was afraid to do some definitive damage to my old, lost emails.

All Replies (1)

more options

It is possible the Inbox file has become corrupt, this may be due to eg: an Anti-Virus product scanning the file or a lack of maintenance eg: compacting on a regular basis to remove old marked as deleted and hidden emails.

Do not compact the Inbox at this point as it is currently unknown what is going on.

If you have an anti-virus product scanning Thunderbird folders at start up or when downloading email files then stop it scanning or make exempt any Thunderbird file or folder.

Create some suitable folders for organising emails and move all wanted emails from the Inbox into those folders for storage. Ideally, the Inbox should be for new incoming mail and not be used as a general long term storage.

Are you talking about an imap or pop mail account ?