Disappearing emails

Hello billfromcalgary,

Let's start off by checking the helpful steps in this article which can help with this issue: If emails appear to be missing in Mail on Mac - Apple Support. Follow this guidance:

• "If you use more than one email account in Mail, make sure you’re looking at messages for the correct account.
• If you sorted messages, they may be in the list but not in the order you expect.
• If the missing emails are from a specific person or group, check whether you blocked messages from them.
• If you use rules, they may have moved messages to other mailboxes. Try searching for the messages.
• Check the account’s Recovered Messages mailbox, if available in the Mail sidebar.
• Quit Mail, then reopen it."

Let us know if we can help with anything else at all or if this doesn't settle your issue so we can look into this further with you. Thanks and have a fabulous day!

billfromcalgary,

You mentioned that you find the emails in the inbox for an email address provided by your ISP. Is that the email address the emails were originally sent to? When setting up the Mail app, it is essentially a shell that organizes and displays for you the emails synced from your email service provider. We ask about the original address to attempt to understand the situation a bit more. Please, for privacy, don't provide your full email addresses here though.

Next, if you do close and then relaunch the Mail app do you see that email show in the inbox within in the Mail app?

Thanks.

Hello billfromcalgary

Thank for trying the troubleshooting.

At this point, it's good to get Apple Support to dig into this with you: Apple Support

Thanks.