We have a small team who wish to use Office 365 for collaboration with partners. They only really want to use SharePoint; they're happy with their internally hosted Exchange for email, and are not looking at online Exchange. Only a handful of users in the organisation will use this online SharePoint system.
However, when we create new users in the Office 365 trial their email addresses are of the form [email protected]. We would like them to be of the form [email protected], so that if the partners try to email the users they'll have the right address.
Is this possible? We already have a domain ('example.com' in this example), but it's being used to host the company website, and we don't want to affect that.
I've read about Office 365 and Single Sign-On, but that requires ADFS (which we don't have, and expect would take too long to implement), and our team is actually happy with having to log-in to Office 365 - but they just want their email addresses to be correct.
How might we achieve this? Most of what I've read seems to be about using Exchange Online, or Signal Sign-On, and I'm a bit bewildered. Is it just a matter of adding a domain to the Office 365 plan, and then not using it?