Hand off a finished site to a client.
The site's done. The client should own it — the analytics, the form submissions, the Stripe, the domain. You want out of the loop without abandoning them.
Invite my client maya@plumage.studio to the photographer site as a collaborator. Once she confirms, transfer ownership to her. I'll stay on as a collaborator for one week then drop off entirely.
What you end up with. Your client owns the site. They get the form submissions, the analytics dashboard, the Stripe revenue, the domain renewal notices. You can stay as a collaborator if they want help, or leave entirely.
+ Or your client can manage collaborators themselves from the dashboard once they own the site.