How do I troubleshoot the List-Unsubscribe header in Responsys?

Marketer from Email Geeks clarifies that List-Unsubscribe headers should not be different on different devices as they are part of the raw message. How they are being used by the application to show unsubscribe buttons is up to the application and can be informed by the mailbox providers' trust signals.

Email marketer from Stack Overflow suggests using online tools like Mail-tester.com to check if the List-Unsubscribe header is correctly implemented and visible in the email headers. The tool provides feedback on various aspects of email deliverability, including the presence and format of the header.

Email marketer from SparkPost suggests regularly cleaning your email list to remove inactive or unengaged subscribers. This helps improve email deliverability and sender reputation, as it reduces the likelihood of sending emails to recipients who are likely to mark them as spam.

Email marketer from GMass recommends using both mailto and HTTP List-Unsubscribe headers. This provides redundancy and ensures that different email clients and mailbox providers can process unsubscribe requests correctly. The mailto header acts as a fallback in case the HTTP header is not supported.

Marketer from Email Geeks clarifies that if the listunsub method in the header is “mailto” it will send an email, but if it’s rfc8058 it will be a POST request.

Marketer from Email Geeks explains that Responsys defaults to including the List-Unsubscribe header, and all outbound messages will have it unless the option is unchecked. Inbox providers express List-Unsubscribe differently, sometimes ignoring it based on reputation and volume, so it may not always be visible in the inbox.

Email marketer from SendGrid recommends monitoring unsubscribe rates and analyzing the reasons why subscribers are opting out. This information can be used to improve email content, targeting, and frequency, ultimately reducing unsubscribe rates and improving overall email marketing performance.

Email marketer from Campaign Monitor recommends clearly displaying the unsubscribe link to ensure your subscribers know how to unsubscribe. They suggest that hidding the unsubscribe link, makes the subsciber more likely to report spam.

Email marketer from Mailjet suggests using an HTTP List-Unsubscribe header over a mailto: one, as it provides a more reliable and immediate unsubscribe process. The HTTP method allows for automated processing of unsubscribe requests, avoiding potential issues with email delivery and processing of unsubscribe requests.

Email marketer from Email Geeks says that responsys defaults to including the List-Unsubscribe header, and all outbound messages will have it unless the option is unchecked. Inbox providers express List-Unsubscribe differently, sometimes ignoring it based on reputation and volume, so it may not always be visible in the inbox.

Email marketer from Validity emphasizes the importance of the List-Unsubscribe header for maintaining good sender reputation and improving email deliverability. Properly implemented headers help mailbox providers identify and respect unsubscribe requests, reducing the risk of being marked as spam.

Marketer from Email Geeks explains that whether the List-Unsubscribe is displayed in the UI depends on a lot of factors controlled by the MBP and suggests checking the raw message source (specifically the headers) to see if it was set. For the second part of the question, advises to ask the ESP.

Email marketer from Reddit advises to ensure the email sending platform is correctly configured to include the List-Unsubscribe header. This includes verifying that the header is enabled in the settings and that the unsubscribe link or email address is valid and functional.

Expert from Spam Resource recommends checking the headers to ensure that the headers are properly formatted and contain valid email addresses or URLs. Also they explain that you should ensure that the email address or URL you provide is monitored and that unsubscription requests are handled immediately and accurately.

Expert from Word to the Wise emphasizes the importance of testing List-Unsubscribe implementations, specifically mailto: commands. They advise verifying that the unsubscribe requests are correctly received and processed, and that the sender's system correctly records and acts upon the unsubscriptions to avoid future mailings to unsubscribed users.

Expert from Email Geeks suggests testing with Microsoft to see the List-Unsubscribe header in the UI, as Gmail only shows it with enough volume and a good reputation. Also advises to check headers and manually test and states that the list-unsub should be the same type of header for all recipients.

Documentation from Google details bulk sender guidelines which explains that messages must include a one-click unsubscribe. It goes on to state that, For list-unsubscribe headers, you must include both a mailto: and a URL format. Links must be easily visible.

Documentation from RFC Editor explains that the List-Unsubscribe header field provides a simple, reliable, and standard method for users to unsubscribe from email lists. It can contain either a 'mailto:' URL or an HTTP URL. Mail clients can use this information to provide an automated unsubscribe mechanism.

Documentation from Oracle Help Center explains how to configure List-Unsubscribe headers in Responsys. It covers enabling the feature, understanding the different header types (mailto: and HTTP), and testing the implementation. It notes the header is enabled by default.

Documentation from Litmus explains testing the List-Unsubscribe header by sending a test email to different email clients and checking the raw email source for the presence and correct formatting of the header. Also suggests using mailbox provider feedback loops to monitor unsubscribe requests and ensure they are processed correctly.