move smart mailbox to ipad

Hello, bteinspruch.

Thank you for using Apple Support Communities.

Currently, Smart Mailboxes is only available for the macOS: Use Smart Mailboxes in Mail on Mac

"If you change an email while viewing it in a Smart Mailbox—such as marking the email as read or unread, or moving or deleting it—the change is reflected in the mailbox where the email is stored.

If you use iCloud Drive, your Smart Mailboxes are available on your other Mac computers that have iCloud Drive turned on and Mail selected in iCloud Drive options. See Use iCloud Drive to store documents."

Depending on what you need to do, you can organize your emails on iPad: Use mailboxes to organize email on your iPhone, iPad, or iPod touch

Cheers!