Sending, receiving, and organizing email in Outlook on the web for business
Hi Mathew,
I'm Cherrelyn, and I’m here to help.
Yes, what you're seeing is expected behavior. When you send emails directly from a shared mailbox via Outlook on the web, the recall option is typically unavailable, as this feature relies on the sender’s mailbox owning the sent message. To recall an email the message must be sent from your personal mailbox using Send As or Send on behalf of. The message must appear in your personal Sent Items for the recall option to be enabled. Unfortunately, emails sent directly from the shared mailbox and saved in its own Sent Items cannot be recalled. A possible workaround is to always send mail from your own mailbox with delegated permissions if you need the recall option available.
I hope this will help and if you have any question please don't hesitate to reply to this thread.
Warm regards,
Cherrelyn