Email to case setup in Sandbox

Hello community,

I am fairly new to CRM and have I am hoping a simple one for the experts out there.

Having setup a sandbox using minimal copy I would like to set up inbound email to case testing for one or more test mailboxes. I don't want to impact the live production instance at all.

We use o365 for email.

Can anyone point me in the right direction?

Regards,

Bren