Currently we have webmail through web.com and we have about 50 users on there. web.com also hosts our business domain. we are planning on moving to office 365 Business Premium class E3 for email encryption. but in the meantime we would like to have only 5 webmail moved to office 365. is there a way to move the 5 accounts and have the same email as firstname.lastname@example.org but also keep the current users to use webmail only.
in other words have email@example.com hosted on 365. and firstname.lastname@example.org hosted on web.com?
we need the ability to share calendars and also have encryption as this is a Healthcare facility so we are required to have email encryption.