In Mail I have on my mac mailboxes and cloud I need help

Hello the peaceful poet,

If we are understanding you correctly, you've accidentally deleted an account that you use with your Mac Mail app. Is that right? If so, you can add that account back with these steps: Add email accounts in Mail on Mac - Apple Support. Follow this guidance:

• "The first time you open Mail, you may be asked to add an account. Select an account type or Other Mail Account, then enter your account information.
• If you already added an email account, you can still add more. In Mail, choose Mail > Add Account, select an account type, then enter your account information. Make sure the Mail checkbox is selected for the account.
• If you’re using an account on your Mac with other apps, such as Contacts or Messages, you can also use that account with Mail. In Mail, choose Mail > Accounts to open Internet Accounts settings, then click Add Account on the right.
• You can set options for your email accounts in Mail settings."

We hope this helps. Let us know if we can assist with anything else at all. Take care.