List-Unsubscribe Header (One-Click Unsubscribe)
Last updated
Last updated
The implementation of List-Unsubscribe and List-Unsubscribe-Post headers (commonly known as one-click unsubscribe) is a response to stricter requirements set by mailbox providers such as Google and Yahoo. These features provide subscribers with an easy way to opt out of emails, improving user experience and enhancing email deliverability.
To configure the List-Unsubscribe and List-Unsubscribe-Post headers in our service, follow these steps:
1. Navigate to SMTP Accounts -> Settings -> Unsubscribe -> List-Unsubscribe.
2. Enable the necessary options by selecting the appropriate checkboxes.
For emails that meet the requirements, the headers will be formatted as follows:
In the recipient’s inbox, an 'Unsubscribe' option will appear, allowing the subscriber to opt out of future emails with a single click. This feature is prominently displayed in many ISPs, such as Gmail, improving the user experience and reducing the likelihood of messages being marked as spam.
Our service supports two main unsubscribe methods to provide subscribers with a seamless opt-out experience:
URL (HTTP): Unsubscribe by visiting a web page. The recipient clicks the URL provided in the email, which redirects them to a dedicated unsubscribe page.
Mailto: Unsubscribe by sending an email. Clicking the link generates an email to the specified address with a predefined subject, such as 'unsubscribe.'
Using our List-Unsubscribe functionality offers several advantages:
When a recipient clicks the unsubscribe link or submits an opt-out request, their email address is immediately added to the internal EmailLabs blacklist with the status ‘unsubscribe’.
All future email delivery attempts to this address are automatically blocked at the server level, ensuring no further emails are sent.
For any attempt to send emails to a blacklisted address, the system logs the message status as ‘dropped’ to indicate that the email was not delivered due to the recipient’s prior opt-out request.
If you already have a custom List-Unsubscribe link implemented, our system will not overwrite it. Instead, we ensure compatibility and enhance functionality by automatically adding the List-Unsubscribe-Post header. This ensures that your email messages meet the technical requirements of mailbox providers, such as Gmail and Yahoo, without altering your existing unsubscribe mechanism.
