Edit 9/29/2026: a major rewrite of this blog post to consolidate information.
You may be familiar with the classic Outlook for Windows message recall feature that gives senders an opportunity to re...
Updated Sep 29, 2026
Version 15.0
Blog Post
Great approach and long awaited upgrade.
Feedback: Below option can be enabled with mutual trust or federation settings of some sort, would be highly useful.
Can I recall messages sent outside my organization?
No. For privacy and legal reasons the new Message Recall won’t recall messages sent to recipients outside your organization.
Maybe a default with Admins having ability to turn if off. Reporting would be bit challenging though.
Set-OrganizationConfig -ExternalRecallReadMessagesEnabled $false.