This domain is used by AuthSMTP to handle automated unsubscribe requests generated by email clients and mailbox providers via List-Unsubscribe and List-Unsubscribe-Post headers.

If you have questions about a specific mailing please contact the sender directly.

List-Unsubscribe.net

Improve deliverability and reduce spam complaints by adding machine-readable unsubscribe instructions to your emails.

What are List-Unsubscribe headers?

List-Unsubscribe is an email header defined in RFC 2369 and extended by RFC 8058. It lets inbox providers (like Gmail and Outlook) show a native Unsubscribe action next to your email. Rather than relying on a link in the body, the header advertises one or more unsubscribe methods that clients can call automatically.

You can include a mailto: address (sends a blank unsubscribe email) and / or an HTTPS URL (calls your endpoint).
Adding List-Unsubscribe-Post: List-Unsubscribe=One-Click (RFC 8058) signals a safe, no-confirmation HTTP POST — many providers prefer this.
Major ISPs may require this for high-volume senders; it often helps deliverability and user trust.

Example Header Generator

From Domain Mailto Address HTTPS Unsubscribe URL

Include mailto Include HTTPS link One-Click

Generated Headers

Preview

From: updates@your-domain-name.com To: you@example.com Subject: Your weekly newsletter — tips & updates Unsubscribe: native button likely available • unsubscribe

Hi there — here are this week’s highlights.

Tip #1
Tip #2
Tip #3

Note: The visible unsubscribe button / label varies by email client.

Best practices

Use HTTPS and support One-Click with an idempotent POST that requires no login.
Keep your body unsubscribe link too — it’s still required by many anti-spam rules (e.g., CAN-SPAM).
Rate-limit and sign unsubscribe URLs (HMAC) to prevent abuse; return a simple success page.
Honor unsubscribes within 10 business days (or sooner) and persist the choice across lists when appropriate.
Use an Email Service Provider (ESP) - like AuthSMTP - who can help with some of these!