Administrative requirements

To send as a distribution group in Office 365 (Exchange Online) the admin will need to create a group and grant the user the necessary permissions.

Login to Admin Portal with a valid admin account.

Click the Admin drop down menu in upper right or, in the new interface in lower left,and click Exchange.

Click groups from top menu. Click the + button and choose Distribution group (to create a new group if you need).

• Type display name. This will be visible in admin portal when looking at address book. Its recommended you name it something you can easily recognize. Type a username alias.
• Type Alias.
• Type desired Alias Email Address.
• Set Owner. You can leave it as the admin or change it to another user.
• Add the the members you would like to be part of this groups distribution.
• Click Save when finished.

Double click on your new group to open his Properties:

Click on Delivery Management from menu on left. Then select Senders inside and outside of my organization. This will allow users from outside your domain to email this address.

• Click on Delegation from menu on left.
• Click the + button under Send As and add the user who you would like to be able to send as this group.
• Click save when finished.

The group and the necessary permissions have been setup. The user will now be able to compose new emails messages and send as the group.

New e-mail as the Distribution Group (Outlook)

Enable show From field: in Outlook 2007, 2010 & 2013: Open new message, click on Options tab and in the Fields section click Show From.

• Click the From field drop down menu.
• Select Other email address...
• Click the From... button and select the Global Address List. Find the group you created and double click this group.
• Click Ok when finished. You will see the alias address listed in the From field.
• Compose and send your email from your alias group address.