Stop automatically filling people with everyone I email.
People should only be populated with contacts I manually added, as it appears in people on the outlook.com website.
Thank you for using Outlook and letting us know about your current experience. We really appreciate your support.
This channel is dedicated to feature requests only. We’ll be more than happy though to answer your question in the Help Section of your app. You’ll find it in the Settings.
We look forward to reading you there.
All the best
The Outlook Mobile Team
PS: Please use the Help Section of the app for any questions, we are not able to see replies to this address.
JST Joe Jefferies commented
Android Outlook, Windows 10 People and Outlook People (Online) all automatically link people / contacts. It should be OFF by default with an option to turn it on.