How to Fix Yahoo Email Not Delivered to Outlook
Question details
The user is unable to receive emails sent from a Yahoo address to their Outlook account, and is occasionally receiving emails that appear to belong to another person with a similar email address.

- Product
- Microsoft Outlook
- Device & OS
- not provided
- Scenario
- The user is expecting incoming emails from a Yahoo account but they are failing to arrive in the Outlook inbox.
- Observed behavior
- Messages from Yahoo do not show up in the Outlook mail client. The user also suspects that two people might have the same email address due to receiving misdirected mail.
Ensure you have a stable internet connection and verify that the sender has spelled your Outlook email address perfectly, including the correct domain extension.
Verify Missing Emails via Outlook on the Web
Log into the web version of Outlook to determine if the emails were successfully delivered but are failing to sync to your local mail application.
Launch a web browser and navigate to outlook.live.com.
Enter your Microsoft account credentials to access your mailbox online.
Look through your Inbox, Junk Email, and Deleted Items folders for the missing Yahoo emails. If they appear here, your desktop or mobile mail app is experiencing a synchronization issue.

Review Outlook Mailbox Settings and Storage Limits
Ensure that your mailbox is not full and that no automated rules or forwarding settings are redirecting incoming Yahoo emails.
Address Concerns About Similar Email Accounts
Determine why you might be receiving mail meant for someone else and verify that it is not a duplicate account issue.
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Frequently Asked Questions
Can two people have the exact same Outlook email address?
No, Microsoft's system strictly prohibits the creation of duplicate email addresses. If you receive email meant for someone else, the sender likely misspelled the address or used the wrong domain (such as .com instead of .co.uk).
Why am I not receiving emails from a specific Yahoo account?
The emails might be filtered into your Junk Email folder, blocked by a custom mailbox rule, or diverted via forwarding settings. Additionally, a full mailbox storage limit can prevent any new messages from arriving.
How can I check my Outlook mailbox storage limit?
Sign in to Outlook on the web, click the Settings (gear) icon in the top right, go to 'General', and select 'Storage' to view your current storage usage and available limits.
Why do Yahoo emails appear on Outlook web but not in my mail app?
This usually indicates a synchronization issue with your local mail application (like classic Outlook or the Windows Mail app). Try manually refreshing the app, restarting it, or removing and re-adding your Outlook account.




