Getting Hubspot to recognise the 'reply-to' address as being the correct sender

When someone completes a contact or quote request form on our WordPress site – using the Forminator plugin – the information is sent to our Team Inbox.

Technically, the sender of this form is actually me, as I am the authorised sender using WP Mail SMTP. But this means that Hubspot thinks I am the person submitting the form each time, and not the prospect whose name appears on the form and the reply-to address. Is there a workaround for this?

I don’t want to use Hubspot forms instead of Forminator because we want the submisssions to come into Team Inbox, not into the contact’s Activity timeline. 

Thanks in advance