The permissions required to perform tasks to manage Microsoft Exchange Online vary depending on the procedure being performed or the cmdlet you want to run.
To find out what permissions you need to perform the procedure or run the cmdlet, do the following:
In the table below, find the feature that is most related to the procedure you want to perform or the cmdlet you want to run.
Next, look at the permissions required for the feature. You must be assigned one of those role groups, an equivalent custom role group, or an equivalent management role. You can also click on a role group to see its management roles. If a feature lists more than one role group, you only need to be assigned one of the role groups to use the feature. For more information about role groups and management roles, see Understanding Role Based Access Control.
Now, run the Get-ManagementRoleAssignment cmdlet to look at the role groups or management roles assigned to you to see if you have the permissions that are necessary to manage the feature.
Note
You must be assigned the Role Management management role to run the Get-ManagementRoleAssignment cmdlet. If you don't have permissions to run the Get-ManagementRoleAssignment cmdlet, ask your Exchange administrator to retrieve the role groups or management roles assigned to you.
If you want to delegate the ability to manage a feature to another user, see Delegate role assignments.
Exchange Online permissions
You can use the features in the following table to manage your Exchange Online organization and recipients. Users who are assigned the View-Only Management role group can view the configuration of the features in the following table. For more information about these role groups, see Role groups.
Feature
Permissions required
Anti-malware
Organization Management
Hygiene Management
Anti-spam
Organization Management
Hygiene Management
Arbitration
Organization Management
Client Access user settings
Organization Management
Data loss prevention (DLP)
Organization Management
Compliance Management
Discovery mailboxes - Create
Organization Management
Recipient Management
Distribution groups
Organization Management
Recipient Management
Domains
Organization Management
Microsoft 365 or Office 365 connectors
Organization Management
In-Place eDiscovery
Discovery Management
Note: By default, the Discovery Management role group doesn't have any members. No users, including admins, have the required permissions to search mailboxes. For more information, see Assign eDiscovery permissions in Exchange.
In-Place Hold
Discovery Management
Organization Management
Notes:
To create a query-based In-Place Hold, a user requires both the Mailbox Search and Legal Hold roles to be assigned via membership in a role group that has both roles assigned. To create an In-Place Hold without using a query, which places all mailbox items on hold, you must have the Legal Hold role assigned. The Discovery Management role group is assigned both roles.
The Organization Management role group is assigned the Legal Hold role. Members of the Organization Management role group can place an In-Place Hold on all items in a mailbox, but can't create a query-based In-Place Hold.
Journal archiving
Organization Management
Recipient Management
Journaling
Organization Management
Records Management
Linked user
Organization Management
Recipient Management
Mail flow
Organization Management
Mail flow rules
Organization Management
Mailbox settings
Organization Management
Recipient Management
Message Encryption
Organization Management
Compliance Management
Records Management
Message trace
Organization Management
Compliance Management
Help Desk
Messaging records management
Compliance Management
Organization Management
Records Management
Mobile devices
Organization Management
Recipient Management
Organization configuration
Organization Management
Outlook on thew web mailbox policies
Organization Management
Recipient Management
Permissions and delegation
Organization Management
Public folders
Organization Management
Public Folder Management
Mail-enabled public folders require Recipient Management
POP3 and IMAP4 permissions
Organization Management
Quarantine
Organization Management
Hygiene Management
Recipients
Organization Management
Recipient Management
Retention policies
Organization Management
Recipient Management
Records Management
Role assignments
Organization Management
Supervision
Organization Management
Unified Messaging
Organization Management
Unified Messaging Management
View-only administrator audit logging
Organization Management
Records Management
View reports
Organization Management: Users have access to mailbox reports and mail protection reports.
View-Only Organization Management: Users have access to mailbox reports.
View-Only Recipients: Users have access to mail protection reports.
Compliance Management: Users have access to mail protection reports and data loss prevention (DLP) reports (if their subscription has DLP capabilities).
Exchange Online in Microsoft 365 and Office 365 includes a large set of predefined permissions, based on the Role Based Access Control (RBAC) permissions model, which you can use right away to easily grant permissions to your admins and users. You can use the permissions features in Exchange Online so that you can get your new organization up and running quickly.
You can configure more than one email address for the same mailbox. The additional addresses are called proxy addresses. A proxy address lets a user receive email that's sent to a different email address. Any email message sent to the user's proxy address is delivered to their primary email address, which is also known as the primary SMTP address or the default reply address.
Mail users are similar to mail contacts. Both have external email addresses and both contain information about people outside your Exchange or Exchange Online organization that can be displayed in the shared address book and other address lists. However, unlike a mail contact, a mail user has sign in credentials in your Exchange, Microsoft 365, or Office 365 organization and can access resources. For more information, see Recipients.