Why is my @me.com account receiving mail addressed to @yahoo.com accounts?

Hi Jasea,

Thanks for contacting Apple Support Communities!

We understand that you're receiving email for Yahoo accounts as well as your iCloud account.

We're all Apple users here so we can't speak to what developers are doing with spam email.

Do you have any Yahoo accounts enabled on your Mac? Check out this resource which will show you how to check: View email account information in Mail on Mac - Apple Support

If you need help to reduce spam that you receive on your iCloud account, this resource will guide you: Report and reduce spam in iCloud Mail - Apple Support

"Report junk mail 

To make sure future messages from the same sender are marked as junk, you can report messages as junk in the Mail app. 

• On your iPhone or iPad, swipe left on the message, tap More, then tap Move to Junk. 
• On your Mac, select the message and click the Junk button in the Mail toolbar. Or you can drag the message to the Junk folder in the sidebar.
• On iCloud.com, select the message, then click the Flag button and choose Move to Junk. Or you can drag the message to the Junk folder in the sidebar."

We hope this helps.

Cheers!

Hi Jasea,

We recommend checking to see what email accounts you have listed . If you see a Yahoo email account, you can make it inactive or delete it. This article explains more about this: Change Account Information settings in Mail on Mac.

"To change these settings in the Mail app  on your Mac, choose Mail > Settings, click Accounts, then click Account Information.

Enable this account:

Make an account active or inactive. When you deselect the checkbox for an account (make it inactive), the account is disabled and taken offline—its mailboxes and messages don’t appear in Mail."

In regard to your questions about why Apple Mail is identifying some mail as junk, this could be based on what you've previously marked as junk. This article explains more about this: Reduce junk mail in Mail on Mac.

Take care.