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Emails sent returns a warning large size 33.9 MB attachement, even if there is no attachment.

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When sending an email sporadically a warning message will appear about a large message, even if nothing is attached. Any advisement on what could be causing this problem?

Thanks! Dan

When sending an email sporadically a warning message will appear about a large message, even if nothing is attached. Any advisement on what could be causing this problem? Thanks! Dan

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First thing to do is some cleanup in case Thunderbird is confused.

My standard cleanup instructions for Thunderbird:

1. Go through your Junk/Spam folder. Check to make sure no good e-mails are there, then empty the folder.

2. Thunderbird Menu: File: Empty Trash

3. Thunderbird Menu: File: Compact Folders

Do this for each "account" in Thunderbird, including Local Folders.

Quit Thunderbird, then start it again.

If it has been awhile, reboot the computer!

Modified by user1121639