"Email Tracking" section on the core Email Sending settings page (/admin/settings/email-sending).

Covers what to store for each outgoing email (body, headers, sampling rate), how long to keep it (retention, compression, S3 archival), and the send queue's two switches — plus the system-status card, which reports what the module is actually doing rather than what it is configured to do. Contributed via PhoenixKit.Modules.Emails.email_settings_sections/0.