Messages retrieved by Outlook via POP3 are not deleted

Messages retrieved by Outlook via POP3 are not deleted

Hi,

I set up Outlook 2007 to retrieve my ZOHO mail via POP3, and configured it to delete the mails after successful retrieval. I tried numerous settings, delete after 1 day, delete immediately, delete when deleted locally in Outlook. But the mails stay in my ZOHO inbox everytime, no email is ever deleted.

Is this an error in ZOHOs POP3 support?

However, I only use POP3 as a "last resort" since IMAP seems not to be available at this time...

TIA,
Alex