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Granting send as or full access permissions to multiple mailboxes at once in Office 365

21 Jul 2014 by Emma Robinson

The Office 365 Administration portal now allows you to perform many Administration tasks that were previously only possible using PowerShell. This is a great relief to organizations whose IT staff aren’t up to speed with PowerShell or do not have access to it.

One example of this is the ability to now apply to Send As, Send On Behalf and Full Access mailbox permissions to multiple users at once.

To get started, log in to the Office 365 Administration portal as an Administrator and navigate to the Mailbox section of Exchange Online.

Exchange Online Mailboxes

Exchange Online Mailboxes

You can then select the mailboxes you wish to apply the permissions to and click More Options in the Action Panel on the right-hand side. If you want to select a specific subset of mailboxes you can use the Advanced Search option.

Read more Optimizing PowerShell for large Office 365 tenants

Advanced Search Options

Advanced Search Options

Select all Mailboxes

Select all Mailboxes

To set the permissions, you’ll need to click on either Add or Remove under the Mailbox Delegation options.

Select Mailbox Delegation

Select Mailbox Delegation

This will pop up a window allowing you to set the permissions as required.

Add Send As Send on Behalf, or Full Access Rights

Add Send As Send on Behalf, or Full Access Rights

All you need to do now is apply the settings and the permissions will have been set for all your users!

Applying Settings

Applying Settings

So how do you know which permissions have been set? That’s easy – use our Office 365 reports.