GMail or Office 365 Setup

I have a marketing team in need of assistance setting up and testing user accounts for office 365 outlook (Brower version only) or GMail. We are in the process of confirming what we will use. In this case we will want to setup the inbox, build email forwarding for each user.

I have a total of 5 users.

We do not need DNS configuration or deliverability. Just setting up the users, inboxes, and ensuring we can test and support any questions that come up along the way.