Set up your email account in Virtual Office or SaaS
Microsoft 365 email and Office sign-in
Virtual Office CS or SaaS supports Microsoft Office applications when your firm maintains a supported Microsoft 365 subscription. Supported licenses are:
Microsoft 365 Business Premium
Microsoft 365 F3
Microsoft 365 E3
Microsoft 365 E5
Microsoft 365 Apps for enterprise
If your firm uses email in Outlook within Virtual Office CS or SaaS, users should sign in with their firm-issued Microsoft 365 account. Exchange Online mailboxes, aliases, distribution groups, mobile access, and mail-flow settings are administered in your firm's Microsoft 365 tenant.
Your firm or your Microsoft Cloud Solution Provider is responsible for MX, Autodiscover, SPF, DKIM, and DMARC records associated with Microsoft 365 mail flow.