Duplicate Sent messages using Windows Mail
I use Windows Phone 8 and Windows 8.1 on various devices, and when sending messages through Zoho Mail accounts, I get two copies of the sent messages in the Sent folder. I understand this is because Zoho automatically saves all outgoing messages sent via SMTP, and the mail client is also saving its own copy.
However there isn't an option to change this on Windows Mail or Windows Phone. So is there a way of turning off this behaviour on the server end?