AWeber automatically includes list-unsubscribe headers in every email you send, making it easy for subscribers to opt out directly from their inbox. These headers enable the one-click unsubscribe functionality that many email clients display as an "Unsubscribe" button or link near the sender information.
What are list-unsubscribe headers?
List-unsubscribe headers are part of the technical information embedded in your emails. They tell email clients like Gmail, Yahoo, and Outlook where to send unsubscribe requests. AWeber includes both required headers in every email:
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List-Unsubscribe: Contains the unsubscribe URL
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List-Unsubscribe-Post: Enables one-click unsubscribe functionality
These headers comply with Google's requirements for bulk senders and follow email industry best practices.
You can verify these headers are present by viewing the full email headers of any message sent from your AWeber account. Look for the List-Unsubscribe and List-Unsubscribe-Post fields.
Why the unsubscribe button may not appear
Even though AWeber includes the proper headers, the unsubscribe button doesn't always display in every subscriber's inbox. Email clients have their own criteria for when to show this option, and these criteria are generally not made public. Whether or not the button appears is at each provider's discretion.
How subscribers unsubscribe
When an email client displays the unsubscribe button and a subscriber clicks it, AWeber processes the request automatically. The subscriber is immediately removed from your list, the same result as clicking the unsubscribe link in your email footer.
Why this matters
Including list-unsubscribe headers is essential for:
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Deliverability: Demonstrates best practices to email providers
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User experience: Gives subscribers an easy, familiar way to opt out
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List hygiene: Encourages unengaged subscribers to remove themselves rather than marking emails as spam
What you need to know
You don't need to configure anything. AWeber automatically includes these headers in all emails sent through your account. While you can't control whether individual email clients display the unsubscribe button, you can be confident that AWeber includes the proper technical implementation in every email you send.