Remove email messages from sent folder

Remove email messages from sent folder

I am using the free version of Zoho mail and use Outlook and an iPhone as my email clients.

Everything works fine except that a copy of my message is still stored on the Zoho server even though I have set my options to not save messages.

Received emails get removed as soon as I download them but sent emails do not. How can I make sure that copy of my sent emails is not stored on the server?


Thanks in advance