Practical guide. Use only the connection and DNS details provided when your account is activated; .example domains are illustrative.
One identity for each brand
One person can represent several brands with distinct domains, addresses and signatures.
Distinguish organizations
Managing independent organizations requires separate members and permissions; it is not the same as adding an alias.
Review plan scope
Professional includes 5 domains per organization and Business 20. Aliases share the user mailbox; Enterprise covers requirements for independent organizations.