Zoho Mail question

Zoho Mail question

I am still evaluating Zoho for our business use. So far so good except I had issues with SSL not working.

Before we jump into it, I would like to know is it possible to use Zoho Mail with our own email address as an IMAP not POP email client WITHOUT pointing MX records to Zoho servers. (I would like to keep our mails in our own server but also have an option to read them via Zoho Mail as an IMAP client)

This is a showstopper for us.