Exchange Online Plan 1 vs Office 365 E1/E3 - Microsoft Community
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WebFeb 9, 2018 · I've read Exchange Online Plan 1: 1. Does not work with traditional Outlook, it can ONLY be used online. 2. Does not support shared mailboxes. 3. Does not support Azure AD Connect for Same sign on. I've also read that Office 365 E1 does not support any local Office applications and requires all Online. Does that include Outlook?
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