Outlook can recognize many mailing-list messages and show its own Unsubscribe button near the top of the email. When that option is missing, legitimate senders usually include an unsubscribe or preference link at the bottom of the message.
Does this affect you?
Use this for Outlook for Microsoft 365, Outlook 2021 or 2019 on Windows or Mac, and Outlook on the web when newsletters, promotional mail, or mailing lists are cluttering the inbox.
Use Outlook’s Unsubscribe button
This is the quickest option when Outlook detects the message as a mailing list.
- Open or select the newsletter email.
- Look near the sender information at the top of the message.
- Click Unsubscribe if Outlook shows the button.
- Confirm the request if prompted.
Outlook sends the unsubscribe request for you. The sender may still need a few days to process it.
Use the sender’s unsubscribe link
Use this when Outlook does not show its own button.
- Open the email.
- Scroll to the bottom.
- Look for Unsubscribe, Manage preferences, Opt out, or similar wording.
- Open the link and follow the confirmation steps on the sender page.
Legitimate commercial senders are expected to provide a way to unsubscribe, though the exact page and wording vary.
More control
Block obvious junk instead
Do not click unsubscribe links in suspicious messages you never signed up for. Blocking the sender is safer because fake unsubscribe links can confirm your address or lead to phishing pages.
Clean up existing messages
In Outlook on the web, Sweep can delete old messages from a sender and create a future cleanup rule. In desktop Outlook, Clean Up and rules can help remove repeated conversation clutter.
Give it a little time
A real unsubscribe request may not stop messages instantly. If the sender keeps emailing after a week or two, block the sender or create a rule.
Sources
- Microsoft Support – Unsubscribe from a mailing list in Outlook (2025)
- Microsoft Support – Block senders (2025)
- Microsoft Support – Sweep your inbox (2024)