Unsubscribe

One-click unsubscribe. Sets Lead.email_opt_out=True on this lead and on every lead of the same client with the same address, records the address on the client's suppression list (so it survives deletion and the 90-day purge), and stops the open (active or paused) sequences of this lead, of those same-address rows and of the same person's other rows by LinkedIn profile (_linkedin_twin_ids). Renders a confirmation page.

We don't require any authentication — CAN-SPAM requires opt-out be processable in 10 days, and one-click is the Gmail/Outlook 2024 bulk-sender requirement. A valid but expired link still works. The page speaks the lead's language (_lead_language), else the browser's.