Understanding Shared Email, Calendar + Groups in Microsoft 365

Summary

Learn about the different options for shared email addresses and calendar.

Body

Overview

Microsoft 365 provides multiple ways to share email addresses. This article explains the best type to request for common use cases. 

User account

  • A group of people treated as if they are an individual / generic user
  • May require separate password and 2FA method
  • May pose license compliance risks and should not be used

Shared Mailbox

  • A shared, dedicated inbox and calendar
  • Accessible to selected delegates within their personal Outlook account

Microsoft 365 Group

  • A shared, dedicated group of features including inbox and calendar
  • ability to create SharePoint site, Microsoft Team and other feature-rich integrations
  • Accessible to members of the group

Resource

  • A room or piece of equipment treated as a bookable resource
  • Includes dedicated inbox and calendar
  • Compatible with Microsoft Bookings

Delegate Access and Sending Messages

Microsoft 365 supports different levels of delegation for shared mailboxes. The most common permissions are:

Full Access

Allows a user to open and manage the contents of a shared mailbox, including reading, creating, and deleting emails and calendar items. Full Access alone does not allow users to send messages from the shared mailbox. 

Send As

Allows a user to send messages that appear to come directly from the shared mailbox. Recipients will only see the shared mailbox name in the From field.

Example:

From: Service Desk <servicedesk@emilycarru.ca>

Recipients will not see the name of the person who actually sent the message. 

Send on Behalf

Allows a user to send messages on behalf of the shared mailbox. Recipients can see both the sender and the shared mailbox.

Example:

From: Stephen Wichuk on behalf of Service Desk <servicedesk@emilycarru.ca>

This option provides additional transparency by identifying the individual who sent the message while still indicating they are acting for the shared mailbox. 

How to Send a Message on Behalf of a Shared Mailbox

Once Send on Behalf permissions have been granted:

  1. Open a new email message in Outlook.
  2. Select From. If the From field is not visible, enable it from the Options tab.
  3. Choose the shared mailbox address, or select Other Email Address and enter the shared mailbox.
  4. Compose and send your message.

Recipients will see:

Stephen Wichuk on behalf of Service Desk

rather than:

Service Desk

or

Stephen Wichuk

 

Use Cases

Requirement
Use
Explanation
Send to email distributions lists Shared Mailbox Shared mailboxes ideal for email distribution lists, especially so that the sender is not bombarded with replies to their personal inbox.
Send from a shared mailbox, but allow recipients to see who specifically is sending.  Shared Mailbox / Send on Behalf In some situations recipients should know who sent the message while seeing the shared mailbox for replies.
Receive and respond to community inquiries and requests. Shared Mailbox Shared mailboxes look and feel like a personal inbox, but allow you to add/remove team members as needed.
Receive external emails relevant to a team or job share. Shared Mailbox Shared mailboxes provide sufficient functionality to receive external mail.
Send to external email addresses on behalf of a university work unit Shared Mailbox Shared mailboxes provide sufficient functionality to send outside of the organization.
Collaborate on a topic or area of work Group Groups provide additional functionality through Microsoft Notes, Teams and SharePoint but are more costly to maintain in terms of upkeep, storage and security.
Make a room or piece of equipment available to be booked. Resource Resources are designed to represent non-person items whose time can be booked or scheduled on a calendar.
Receive and respond to work requests as a team. TeamDynamix Tickets provide greater visibility, efficiency and consistency in handling routine request fulfilments. For more information please see our article on use of web forms at ECU.

 

Details

Details

Article ID: 10852
Created
Fri 9/27/24 3:35 PM
Modified
Mon 8/24/26 4:14 PM