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When sending an e-mail with a small attachment, I receive an error "qq#4.3.0 please check message and send again. I can't send the message

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When trying to send an e-mail with small attachment, I get the error message qq#4.3.0 and the message fails.

When trying to send an e-mail with small attachment, I get the error message qq#4.3.0 and the message fails.

Chosen solution

Pop or IMAP mail account? What version of Thunderbird?

First try this just in case this a Sent folder issue. Right click on 'Sent' Folder and choose 'Properties' then click on 'Repair Folder', click on OK. Close and reopen Thunderbird. This will make sure the indexing is correct.

Try Archiving emails in the Sent folder (Ctrl+A will highlight all Sent emails and display them as conversation - click on 'Archive ' button) and then right click on Sent folder and choose Compact.

This will get all the old emails into an Archive folder and compact will remove any traces of old deleted sent mail, thus freeing up space.


It could also be an issue at the server end.

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Chosen Solution

Pop or IMAP mail account? What version of Thunderbird?

First try this just in case this a Sent folder issue. Right click on 'Sent' Folder and choose 'Properties' then click on 'Repair Folder', click on OK. Close and reopen Thunderbird. This will make sure the indexing is correct.

Try Archiving emails in the Sent folder (Ctrl+A will highlight all Sent emails and display them as conversation - click on 'Archive ' button) and then right click on Sent folder and choose Compact.

This will get all the old emails into an Archive folder and compact will remove any traces of old deleted sent mail, thus freeing up space.


It could also be an issue at the server end.

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That worked!! Thanks so much!