Hello rodo123,
Thanks for using Apple Support Communities! We see you have a question about recovering some emails deleted from the Archive folder, and we'd like to help.
Check out these steps from this Apple recommended post: Mail Archive Files
Step 1. Click the "Mail" icon on the dock to open Apple Mail.
Step 2. Click "View" from the menu bar and go to "Show Deleted Messages".
Step 3. Click the "Trash" tab in the sidebar and you will see the list of your deleted emails.
Step 4. Select and right-click the message you want to recover, then choose "Undelete" to restore your deleted email to your inbox.
Take care!