Exchange Server/Users and groups
Overview
An email address is required for emails to be sent and received by a recipient.
You can also create a group to send messages to more than one recipient.
To manage the user or group mailboxes, refer to Manage users and groups.
Prerequisites
- The account used for operation must have appropriate roles to manage the server.
Create a user mailbox
Note:
Before proceeding, creating a new user in the Active Directory Users and Computers (ADUC) is highly recommended.

Log in to the Exchange Admin Center and navigate to recipients → mailboxes.
Click Add(➕) and select User mailbox.

- Existing user
- Query the Active Directory domain to search and select the user.
- Click Browse... to select a user.
- New User
- Fill in the information to create a user and its mailbox.
- Settings marked with an asterisk
*
are required.
Note:
You can click More options... to configure the following additional settings

- Mailbox database
- Click Browse to select a mailbox database to hold the mailbox.
- Create an on-premises archive mailbox for this user
- Create an archive mailbox for the mailbox.
- Click Browse to select a mailbox database to hold the archive mailbox.
- Address book policy
- Apply an address book policy for the mailbox.
- Address book policies (ABPs) can limit the scope of the address list that users can view.
Click Save to save the changes and create the mailbox.
Create a group

Log in to the Exchange Admin Center and navigate to recipients → groups.
Click Add(➕) and select a type of group.
- Distribution group
- Can be used only to distribute messages.
- Security group
- Can be used to distribute messages and grant access permissions to resources in Active Directory.
- Select this by default.
- Dynamic distribution group
- A distribution group includes all recipients with attribute values that match its filter.

- Display name
- Enter a friendly name so that users can identify easily.
- Alias
- Use to generate an email address for this group.
- Notes
- Add notes for the mailbox, optional.
- Organizational unit
- Scope recipients in an OU, optional.

- Owners
- Group owners can modify the group properties, and add or remove members.
- If you selected the dynamic distribution group, you can only specify one owner.
- Members
- Add or remove group members.
- If you select the dynamic distribution group, you will use rules to configure recipients.
- Owner approval is required
- Enable approvals for users to join or leave the group, optional.
Click Save to save the changes and create the mailbox.