Email Forwarding Proxy / Gmail

Question

We currently have an issue where we're not receiving mails from a vendor due to them having a low SBRS (senderbase reputation score) and our corporate mail thus blocking messages from them.

To work around this issue I'm hoping to give the vendor a proxy address (e.g. my personal gmail details), and setup a rule such that it will forward on mails from that domain to anyone with an @myCompany.com address copied (To/CC) on the original mail. As such we can continue to communicate using our corporate accounts, but by copying in my gmail account work around the blockage.

Looking online I've found how to forward all emails, but no tips on something more subtle/complex as defined above.

Ideal rule would be something like this.

• Mail Received
• If mail.from.domain == @vendorCompany.com then
  • to = mail.to.foreach(recipient => if(recipient.domain == @myCompany.com) return recipient)
  • cc = mail.cc.foreach(recipient => if(recipient.domain == @myCompany.com) return recipient)
  • mail.forward(to, cc)

Thanks in advance.