how to map many Email Addresses in CDO to Contacts in Eloqua with single process?

Hi,

I have a lot of Not Mapped Contacts in CDO (they come from a form). I would like to map them all to the Contacts in Eloqua as I can see them in a system. I know how to do it for a single Contact in CDO but is there any chance to do it for 20 or 50 emails at once? IS there any bulk process for that in CDO?

Or I should use dedicated Form with CDO update processing step again?