Why Only Web-Based Outlook Clients Can Recall Encrypted Email

The new message recall facility has been around since 2022. Even after Microsoft revamped the feature in 2023, it's still only possible to recall protected messages with OWA and the new Outlook. As it turns out, the reason is that a premium license is needed and Outlook classic might need some new code to check for that license. In other news, Outlook mobile now supports message recall.