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Once again "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox." Thunderbird 147.0.1

I have three email accounts all from different sources.

Two of the three accounts work fine but one account will give me this error message. I back up the Thunderbird folder every week and copied the backup to the working folder and I still have the issue.

I've been getting multiple emails of the same in a few folders. I do have a lot of Filters set up for the account affected.

I have three email accounts all from different sources. Two of the three accounts work fine but one account will give me this error message. I back up the Thunderbird folder every week and copied the backup to the working folder and I still have the issue. I've been getting multiple emails of the same in a few folders. I do have a lot of Filters set up for the account affected.

Chosen solution

I should mention I have three email accounts that Thunderbird was handling for years and years without issue.

Account 1: user1@verizon.net Account 2: user2@gmail.com Account 3: user3@verizon.net

Verizon accounts are handled by AOL.

I have no issues with Account 2 and 3, just Account 1.

Here's what I've done so far.

Shut down Norton. Uninstalled Thunderbird and deleted the AppData>Thunderbird directory. Reinstalled Thunderbird.

Recreated Account 1. Same issue as before.

Aha, then there must be an issue with some emails on AOL regarding account 1.

I signed on to AOL, deleted any emails that I really didn't need including the Spam and Trash folders.

Now Thunderbird seems fine.

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What is your anti-virus software?

Chosen Solution

I should mention I have three email accounts that Thunderbird was handling for years and years without issue.

Account 1: user1@verizon.net Account 2: user2@gmail.com Account 3: user3@verizon.net

Verizon accounts are handled by AOL.

I have no issues with Account 2 and 3, just Account 1.

Here's what I've done so far.

Shut down Norton. Uninstalled Thunderbird and deleted the AppData>Thunderbird directory. Reinstalled Thunderbird.

Recreated Account 1. Same issue as before.

Aha, then there must be an issue with some emails on AOL regarding account 1.

I signed on to AOL, deleted any emails that I really didn't need including the Spam and Trash folders.

Now Thunderbird seems fine.

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