You had me @ stfu: Full mailbox access, send as

EMS:

FULL MAILBOX ACCESS

Add full mailbox access for a user:

$mailbox = Read-host "Mailbox to be actioned upon"; $user = Read-host "User to be assigned full mailbox access"; Add-MailboxPermission -User $user -AccessRights 'FullAccess' -Identity $mailbox

Add full mailbox access for a user (without automapping):

$mailbox = Read-host "Mailbox to be actioned upon"; $user = Read-host "User to be assigned full mailbox access"; Add-MailboxPermission -User $user -AccessRights 'FullAccess' -Identity $mailbox -Automapping $false

https://technet.microsoft.com/en-us/library/bb676551%28v=exchg.141%29.aspx

Remove full mailbox access for a user:

$mailbox = Read-host "Mailbox to be actioned upon"; $user = Read-host "User to have full mailbox access REMOVED"; Remove-MailboxPermission -User $user -AccessRights 'FullAccess' -Identity $mailbox -Confirm:$false

SEND AS

Add 'send as' permission for a user:

$mailbox = Read-host "Mailbox to be actioned upon"; $user = Read-host "User to be assigned send-as permission"; Get-Mailbox $mailbox | Add-ADPermission -User $user -Extendedrights "Send As"

https://technet.microsoft.com/en-us/library/bb676368%28v=exchg.141%29.aspx

Remove 'send as' permission for a user:

$mailbox = Read-host "Mailbox to be actioned upon"; $user = Read-host "User to have send-as permission REMOVED"; Get-Mailbox $mailbox | Remove-ADPermission -User $user -Extendedrights "Send As" -Confirm:$false