Receiving copies of mail passed out through zoho smtp (only since a few days)

Receiving copies of mail passed out through zoho smtp (only since a few days)

Since a few days any mail that I send out through smtp.zoho.com is also copied to the Sent folder in my account.  It is then funnelled back to me when I poll my imap folder (I use it like a pop server, deleting what I fetch).

This did not happen before, and I wonder if some switch in the settings that was accidently flipped. My MUAs already save copies of what I send, so I don't need this feature.