Our customers sign into Zoho Desk using Office365. (At the Zoho Desk login pick "Sign in with Google or other IDPs) Works great but as new people sign in and their contacts are created. Their email is being set to their login name. example test@wcs.com But we use google for email. So it should be test@wschools.com. Is there a way to change what email suffix or domain is?

EDIT: Those are not real emails domains just examples.