Incompatible email client: The recall feature is designed for the Outlook desktop client on Windows. If the recipient is using a different email client (like Gmail, Apple Mail, or a different version ...

To categorize emails in New Outlook, right‑click an email and choose Categorize. Pick a color from the list, and a colored label will appear next to that email in your inbox.

Gmail users also frequently search for ways to take back sent messages, though at much lower volumes than Outlook users.