Office 365 Shared Mailbox in Exchange Admin

Question

I am creating shared mailboxes in my Office 365 account and I want all the users on my domain to have access to all of the mailboxes. Is there any way I can set this up automatically, instead of manually adding each user to each shared mailbox and
then having to remember to add all new users into each shared mailbox?
Also is there anyway I can only allow them to have View-Only permissions on these mailboxes?
Thanks 

Answer 1

Hi Lauren,
the cmdlet add-mailboxpermission is avaliable for Exchange Online, too.
http://technet.microsoft.com/de-de/library/bb124097(v=exchg.150).aspx
 So you can receive a list for all your users mailboxes, and then you run add-mailboxpermission to all of them.
$mymailboxlist = get-mailbox -resultsize unlimited
$mymailboxlist | foreach-object {
                 $resourceMailbox = $_
                 $mymailboxlist | foreach-object {
                         $permittedMailboxAccess = $_
    add-mailboxpermission -identity $resourceMailbox -user $permittedMailboxAccess -accessRights FullAccess -InheritanceType All
In that example script you may ignore warning messages that a user already had access to her own mailbox.
You may add logic to the code to avoid that :)
If you do not know how to connect to Exchange online (required to run that code) please see
http://technet.microsoft.com/en-us/library/jj984289(v=exchg.150).aspx
Regards,
Martin