How Email Compliance List Unsubscribe Header Works
In BH4SF, adding a List-Unsubscribe header to emails informs the email client A Company is the organization where the contact works. This can also be called the Client. what to do when the recipient clicks the Unsubscribe link.
Typically, the email client will treat this URL as a web page, displaying a user interface where the recipient can manage their email preferences. This approach is not strictly a One-Click Unsubscribe, as it requires further steps to finalize the opt-out process.
To address this, a second configuration option is available. This option provides an unsubscribe link that immediately unsubscribes the recipient without additional steps.
This is achieved by including a List-Unsubscribe-Post header. In this scenario, the email client performs an HTTP POST operation with the URL, bypassing the user interface- this is what is known as true One-Click Unsubscribe.
For details on how to set one-click unsubscribe up, see Enable One-Click Unsubscribe for List Header.
For details about assumptions and limitations see Email Compliance List Unsubscribe Header Assumptions & Limitations.