Hi,
Thank you for writing to Microsoft Community Forums.
Seems that you signed in to 365 on your android phone but company's logo is shown on top of the Bing search page. We would like to know that the account you used to send an email via 365(outlook) from your phone is synced to the Edge browser on the phone. If yes, then logout in edge and log in with the personal account.
However, we commend and appreciate you for recognizing this behavior in Edge. We would value your feedback or suggestions based on your experience using Edge. You can certainly help us improve the features by sharing your feedback. You can: Open Microsoft Edge. Click on the Settings & More Ellipsis (…) on the right hand corner and then, select Help & Feedback and select Send Feedback.
Regards,
Aditya Roy
Microsoft Community – Moderator