title: Give mailbox permissions from graph api
body: <p>I am using the Graph API with app permission &amp; with a certificate.</p>
  <p>I know how to send emails with the sender which is different from the requestor's email.</p>
  <p>I go to admin.exchange.com, select the user and add a mailbox delegation then add the user in &quot;Send as&quot;.
  My question is how to add user with &quot;Send As&quot; option via Graph API only.</p>
  <p>I would like use this method <a href="https://docs.microsoft.com/en-us/microsoft-365/admin/add-users/give-mailbox-permissions-to-another-user?view=o365-worldwide#send-email-from-another-users-mailbox" rel="nofollow noreferrer">microsoft permission</a>: but from graph api</p>
  <p>Thanks for your help</p>