How can I verify if my company's emails have List-Unsubscribe headers correctly configured?

Marketer from Email Geeks shares to always confirm with headers as Gmail picks up on stuff from the email to enhance the UI experience. Using List-Unsub and post ensures Gmail is using the right thing and that you meet the requirements to offer one-click.

Email marketer from Litmus provides a detailed guide on implementing List-Unsubscribe headers. The guide covers the different types of List-Unsubscribe options, including mailto and one-click unsubscribe. Also, the article provides code snippets and advice on testing the implementation.

Email marketer from Reddit shares that they have seen improved deliverability rates after implementing List-Unsubscribe headers and monitoring unsubscribe feedback loops. They recommend using a tool like Mail-Tester to check for the presence and validity of the header.

Email marketer from SendGrid emphasizes that using List-Unsubscribe headers improves email deliverability and sender reputation. The article provides instructions on how to add the header to emails sent through SendGrid's platform and discusses monitoring unsubscribe rates.

Marketer from Email Geeks says RFC8058 is what you need to implement for List-Unsubscribe.

Email marketer from Stack Overflow answers that you can verify list-unsubscribe by sending a test email to yourself, viewing the source and looking at the headers to see if 'List-Unsubscribe' is present.

Marketer from Email Geeks explains that if Gmail shows an unsubscribe link, it means valid List-Unsubscribe headers are present, and the actual raw source needs to be checked to see all the headers.

Email marketer from Mailjet explains the importance of List-Unsubscribe headers for email deliverability and compliance with anti-spam regulations. The guide details how to implement the header using both mailto: and HTTP unsubscribe options, providing code examples and best practices for implementation.

Email marketer from EmailVendorSelection shares that adding a List-Unsubscribe header is a signal to ISPs that you care about recipients preferences, and it shows how to setup either with a mailto: or an URL setup.

Email marketer from SparkPost discusses the benefits of using the List-Unsubscribe-Post header alongside the standard List-Unsubscribe header. It explains how this header enables one-click unsubscribe functionality, improving user experience and sender reputation. You can also use the Return-Path header and set up feedback loops.

Email marketer from Email on Acid stresses the importance of List-Unsubscribe headers for avoiding spam filters. The article discusses how the absence of these headers can negatively impact sender reputation and provides tips on ensuring correct implementation.

Expert from Email Geeks shares that using aboutmy.email is a good way to check if a List-Unsubscribe header and List-Unsubscribe-Post header are present.

Expert from Spam Resource explains that to check for a List-Unsubscribe header, you can view the email's source code and look for the 'List-Unsubscribe:' header. You can also use online tools that analyze email headers.

Expert from Email Geeks shares that Gmail doesn't always show the unsubscribe link even if the header is present, recommending Steve's tool as a more reliable check. If the link is present you're good, if it isn't then don't panic yet.

Expert from Email Geeks suggests viewing the full headers (view original) to check for the List-Unsubscribe header and recommends Steve's tool.

Expert from Word to the Wise shares that it is important to implement list-unsubscribe, as email providers will add their own. The amount of complaints you get will have an effect on deliverability.

Documentation from RFC Editor details how to implement one-click unsubscribe functionality with the List-Unsubscribe-Post header, improving user experience and sender reputation. The document describes how the header should be constructed.

Documentation from Google Workspace Admin Help explains that the List-Unsubscribe header allows users to easily unsubscribe from mailing lists. It specifies the format and requirements for including the header, including both mailto: and URL options. Google recommends including both for best compatibility.

Documentation from RFC Editor outlines the original standard for the List-Unsubscribe header, defining its purpose and syntax. It specifies how the header should be constructed to ensure compatibility with various email clients and mailing list managers. This is a foundational document for understanding the technical aspects of the header.

Documentation from Microsoft Learn details how the List-Unsubscribe header works within Exchange Online. It highlights that Exchange Online automatically processes these headers, allowing recipients to unsubscribe directly from within Outlook. The article also notes security considerations and best practices.

Documentation from DKIMValidator highlights that as well as list-unsubscribe headers, DKIM, SPF and DMARC records help ensure your email are delivered.