Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Solved Archived

Why is there 2 copies of sent E-MAIL's in the sent items folder for thunderbird v 38.0.1? SOLVED ISP added the folder

'Mr. Craig E.... replied
'Mr. Craig E. Whittington.'

When I send E-MAIL's there are 2 copies of all sent E-MAIL's in the sent items folder. When I send an E-MAIL to myself only 1 copy is received in my inbox, so I assume that the E-MAIL recipients receiving my sent E-MAIL's only receive 1 copy & not 2 copies of the sent E-MAIL.

Thank You.

When I send E-MAIL's there are 2 copies of all sent E-MAIL's in the sent items folder. When I send an E-MAIL to myself only 1 copy is received in my inbox, so I assume that the E-MAIL recipients receiving my sent E-MAIL's only receive 1 copy & not 2 copies of the sent E-MAIL. Thank You.

Modified by Wayne Mery

All Replies (2)

Chosen Solution

If your using gmail or hotmail (in it's many names) then your provider is adding sent mail as it passes through their system and Thunderbird is addin it as it leaves.

Tools menu (alt+T) > account settings > copies and folder and set Thunderbird to not save copies of sent mail

Thanks Matt - problem fixed immediately upon me following your instructions.