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Adding List-Unsubscribe-Post and List-Unsubscribe tags to email headers



4 Votes
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I would like to be able to add custom headers to my email header.

We know that Gmail is a popular mailer for many users.
We believe that many of the users registered with WHMCS are registered with Gmail and will be greatly affected by the changes to the GMail guidelines.
The following tags will be required for Gmail in the future

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

4 Comments

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prolateral commented 3 weeks ago
Yahoo now list this as a *requirement* for bulk senders.
https://senders.yahooinc.com/best-practices/
Chichi Amazu commented 18th July
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Official Response
WHMCS commented 13th June
Hi Hiro,
Thanks for this suggestion.
With the headers added, is there an expectation that the system should take some action? For example changing the client's email notification preferences?
Serhii commented 7th July
Yes, header List-Unsubscribe must include link that will unsubscribe this email from receiving further messages.