Recall Messages – When Does It Work? For a message to be recalled in Outlook, the following prerequisites must be fulfilled: The recipient uses Outlook, and Outlook is running. The recipient's mailbox must be open for the recall to succeed. The message must still be unread and in the recipient's Inbox.
AFAIK, email recall features rarely have any effect outside your own organization. The feature depends on visibility into the mailboxes of recipients to determine if the message has been read or not, and write access to remove the message you are replacing/recalling.
Things to be Aware of when Using Message Recall in Outlook. Message Recall will not be successful if: The recipient is not using Outlook. The recipient is not logged on to the mail service provider. The message has been moved from the Inbox. The message has been read. In this article. Email revocation is offered as part of Office 365 Advanced Message Encryption. Office 365 Advanced Message Encryption is included in Microsoft 365 Enterprise E5, Office 365 E5, Microsoft 365 E5 (Nonprofit Staff Pricing), Office 365 Enterprise E5 (Nonprofit Staff Pricing), and Office 365 Education A5.If your organization has a subscription that does not include Office 365. With the Outlook app as part of Office 365, you can easily recall an email — granted that you’re using a Microsoft Exchange account and the feature has been enabled by your IT department.


How Do I Recall An Email In Office 365 Online
What's more is that the request to replace or recall the message often calls more attention to the email by sending another email.
Recall Email Office 365 Administrator
For my money/time, the best method to avoid needing email recall is to enable the undo send feature instead, which queues the email instead of sending it immediately.