only receiving mail in icloud

Hi lou255,

Thanks for reaching out to Apple Support Communities. It sounds like you're having an issue with iCloud mail. We're happy to provide some information to assist.

You started from a great article If iCloud Mail isn't working. We recommend ensuring all the steps in the following section are completed.

"If you can't receive mail in the Mail app on your Mac

1. On the left side of the main Mail window, find the name of your iCloud email account. If your account name is dimmed and has a lightning-bolt symbol next to it, your account is offline. 
2. To take your account online, connect to the Internet. 
3. Choose Mailbox. If Take All Accounts Online is dimmed, your accounts are already online. 

If you still can't receive email, contact Apple Support to get more help."

You can also test accessing your account from the Mail app in a new user. Set up users, guests, and groups on Mac

If the issue continues, reach out to Apple Support directly using the link above or see a list of numbers by region here: Contact Apple for support and service

Cheers!