
If the recipient’s mailbox is not online with the Exchange server and the Cached Exchange Mood is enabled, this will not work.Email recall will fail if the recipient uses Outlook on Web (OWA) or EAS on a smart device (mobile or tablet) to read his/her email messages.Instead of recalling the message, it will appear as an attempted recall in the recipient’s mailbox.
It would not work even this option available in the Outlook if the user sent the message from the Outlook desktop app that is not on the same Microsoft Exchange Server account to a third-party email box. The users who are using a POP 3, IMAP, or cannot retrieve the sent message in other words, they are out of luck in email recalling. If the sender and the recipient are not using Office 365 or the Microsoft email exchange in the same organization, this feature won’t work. The first condition to success the recall is the mail should not have opened by the receiver before the email recall.
Several reasons can affect to failure of the email recall feature. But It will not work even if the recipient opened the message before you recall it.