List-Unsubscribe=One-Click RFC 8058

ℹ️ Support
1

Hello,

I am experiencing an issue with the “List-Unsubscribe” functionality. The option to unsubscribe from an email using the “Unsubscribe One-Click” method is not appearing in the email client. Below is an example of the message header (with the id changed) :

List-Unsubscribe: https://myURL/unsubscribe/5663bec4354634654636365567567567786568

List-Unsubscribe-Post: List-Unsubscribe=One-Click

DKIM-Signature: v=1; d=mydomain.com; s=myserver; a=rsa-sha256; q=dns/txt; t=23425345345; c=relaxed/simple; h=Date:To:From:Subject:Message-ID:MIME-Version:Content-Type;

In the example, I notice that the DKIM signature does not include the list-unsubscribe or list-unsubscribe-post fields. According to RFC 8058, these fields should be included. How can I ensure they are included?

Do you have any other suggestions on what might be causing this issue?

Thank you very much in advance.

2

@Alejandro321 Mail clients don’t automatically show a “list unsubscribe” button when the header is present. For example gmail doesn’t do it automatically. Searching for “gmail not showing list unsubscribe” will give some explanations.