Hi,@Glenn Maxwell
Thanks for posting your question in the Microsoft Q&A forum.
I agree with Vasil Michev's suggestion.
Firstly, there is no official article stating that it is possible to forward emails sent to an Office 365 group to another account, I did some research and testing and found that it really isn't possible.
If you want to achieve the functionality you want, you might consider the following two suggestions:
- You can create a separate Office 365 account (with another email address) and add him as a unique member of an Office 365 group.
- Then you can set up email forwarding for the account's mailbox using the Delivery option. Email forwarding allows email to be forwarded to other user mailboxes inside or outside the organisation.
If my answer is helpful to you, please mark it as the answer so that other users can refer to it. Thank you for your support and understanding.