The account omar.diop@jambaar.org had been blocked for spam. After the unblock, I set up the address in Outlook and, following synchronization, sent emails have not yet appeared in the Sent Items folder.
Could you help me.
Hi @Ahmadou
Follow these steps in your Outlook:
- Go to the File menu and click Account Settings > Account Settings
- Select your email account and click Change
- In the window that opens, look for the option “Do not save copies of sent items”
- Make sure this box is NOT checked. If it is, uncheck it and click “Next” and then Finish.
With this, Outlook should start saving a copy of sent emails in the server’s “Sent Items” folder, and it will sync with webmail.
Let me know if you were able to fix it 
Sergio Turpín
Thank you @sturpin. Your mail is well received.