How do I add a second email address to MailChimp?

Hello,

I'm working on a form to collect primary & secondary contact info for an event. I've updated the MailChimp integration to push the primary contact email address to our MailChimp account. Can you think of a work around to get the SECONDARY contact email address over to MailChimp too?

Thank you!

Ellen

It is currently only possible to send a single address to Mailchimp per form submission. I checked third party integration and even with Zapier, only a single address is forwarded to MailChimp with each submission.