Email address policy office 365 hybrid

1. How do I create an email policy in Office 365?
2. Can a user have multiple email addresses in Office 365?
3. What is email address policy?

How do I create an email policy in Office 365?

Use the New-EmailAddressPolicy cmdlet to create email address policies. In Exchange Online, email address policies are only available for Microsoft 365 Groups. For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.

Can a user have multiple email addresses in Office 365?

An Office 365 Email alias is simply another email address attached to your mailbox. You can have multiple email addresses that all come into your inbox.

What is email address policy?

Email address policies define the rules that create email addresses for recipients in your Exchange organization.