Hi There, My outgoing emails are getting sent, but not copied in the sent mailbox. My server settings (as David suggested to be revealed) are as follow: IMAP Incoming IMAP SSL/TLS outlook.office365.com Outgoing SMTP STARTTLS SMTP.office365.com I have tried everything i.e. checking and unchecking "Copy emails in the sent mailbox" and nothing helped. Please help. P.S. Initially my goal was to reach the TB developers, but I saw that so many issuis are reported and not fixed for so many years... I'd really appreciate if somebody genious from the community could help me. Thank you in advance, Paul.