Using New Outlook on Windows for personal email, calendar, and contact management
Dear Wyatt Forsyth,
Greetings. Thank you for posting to Microsoft community.
I understand that you are having trouble receiving 3rd party emails. May I please verify the type of account you are using? Is it an M365 work/school account or a Microsoft/personal account like Hotmail/outlook.com?
->Which app are you trying to register your email in?
In the meantime, please check your spam or junk folders and verify whether there are no emails directed there.
Kindly note that this above requested information is required for further analysis and troubleshooting of your situation. Your patience and cooperation are much appreciated.
Looking forward for your response.
Best Regards,
Ashraf.