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Unsubscribe button is not visible in Outlook clients.

Suhruda Nivarthi 0 Reputation points
2025-01-08T13:56:37.2466667+00:00

Hi team, we have a large-scale application in use that sends bulk emails to thousands of users. We adhere to all standard guidelines and protocols, and our email addresses are whitelisted to ensure they are not considered spam.

Our users create email alerts on our platform and receive notifications on their respective email addresses. These communications are not unknown, spam, or unsolicited marketing. To maintain trust with our users, we provide an unsubscribe feature as per RFC2369-compliant.
We have added list unsubscribe headers with mailTo implementation and sent it to outlook account. However, the outlook client doesn't shows Unsubscribe button on the receiver's email client. The same is working fine in other email clients.
The headers were implemented according to the List-Unsubscribe headers as specified in the IETF RFC and our emails are purely transactional in nature.

This is a critical issue for a large organization like ours and while it works properly on Gmail web and mobile, most of our clients use Outlook mail, so we must consider Outlook mail. This situation undermines our commitment to user trust and compliance.

Can anybody assist me why the button is not showing up?
Would like to know whats the process involved to enable the unsubscribe button in Outlook web client and in the Outlook application?

Outlook
Outlook
A family of Microsoft email and calendar products.
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Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Joan Hua-MSFT 3,490 Reputation points Microsoft Vendor
    2025-01-09T02:14:11.0933333+00:00

    Hi @Suhruda Nivarthi

    Welcome to our forum!

    Please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client.  However, I found a link for you that you can refer to for some inspiration: One-click unsubscribe support for emails - Dynamics 365 Customer Insights | Microsoft Learn 

    Hope it helps! 

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".  

    Note: Please follow the steps in our [documentation] to enable e-mail notifications if you want to receive the related email notification for this thread. 

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