Exchange Online - New Shared Mailbox Request

When a ticket comes through Zendesk asking for a new mailbox to be created, we need to clarify whether the requirement is more toward a Distribution List that has one mailbox, and emails from that mailbox are forward to members internally (no external mail received), or for a shared mailbox that is setup to receive both internal and external emails. 

In this example, we will be looking to create a shared mailbox that can receive internal and external emails.

1. Log into Exchange Online

2. Under Recipients --> Shared

3. Click the plus sign icon

4. Fill out the Display Name, Email address fields and add Users as required

5. Click Save

6. Re-open the newly created mailbox?

6. You need to check with whoever opened the ticket what users have full mailbox access and also send as permissions add accordingly.

Click Mailbox Delegation --> Under Full Access, add desired names --> Under Send As, add desired names --> Save

7. Sync Exchange Online by opening