Hi Mitchell,
Welcome to Microsoft Q&A forum.
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Based on your description, you can sign in normally, but you’re not receiving inbound email after changing aliases, including critical 2FA messages. Please follow the steps below to troubleshoot and resolve the issue:
1. Check whether the old Hotmail alias was removed
- Please go to Manage how you sign in to your Microsoft account and review the list of Account aliases.
- If your old @hotmail.com address was removed, Microsoft treats this as a permanent deletion for Microsoft‑domain aliases. Emails sent to that address will no longer be delivered.
- In that case, any services (such as MYOB or suppliers) still sending emails to the old Hotmail address must be updated to use your current address.
2. Quick test: mailbox vs New Outlook app
- Sign in to Outlook.com on the web and check Inbox and Junk.
- Send a test email from another account (for example, Gmail) to @outlook.com.
- If the email arrives on the web but not in New Outlook, this points to a sync/app incident.
- If the email does not arrive on the web either, continue with step 5.
3. If the web receives mail but New Outlook does not
- In New Outlook, remove the account and then add it back to refresh the connection.
4. If the web also does not receive email
In Outlook.com (web) > Settings > Mail, please check:
- Junk email / Blocked senders (remove blocks, add MYOB or suppliers to Safe senders)
- Rules (remove any rules that move, delete, or forward messages)
- Forwarding (confirm it is turned off)
Note: Outlook email addresses are not case‑sensitive, so differences in letter casing do not affect email delivery.
Please feel free to let me know if you have any further updates, thanks.
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