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Saving two copies of sent emails

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Hello, TB saves two copies of each email I send in the Sent folder. This does not happen in the MS365 server that hosts my school emails. How can I get rid of the duplication? thank you.

Hello, TB saves two copies of each email I send in the Sent folder. This does not happen in the MS365 server that hosts my school emails. How can I get rid of the duplication? thank you.

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Outlook automatically saves one copy. You are telling it to save a second copy. Turn OFF your setting to save in sent folder and you should be okay.

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Please share more information, such as your email domain and whether IMAP or POP. You've told us nothing.

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Sorry David, here the details:

The server is outlook.office365.com It uses IMAP email domain is a school one: @tilburguniversity.edu

Security is SSL/TLS, with OAuth2

attached image of advanced settings

thank you!

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Seçilmiş Həll

Outlook automatically saves one copy. You are telling it to save a second copy. Turn OFF your setting to save in sent folder and you should be okay.

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Yep, thank you!