If you are not seeing the Trimbox button on some of your emails, then it is probably because Trimbox has decided that those emails are not coming from a mailing list. Trimbox will only mark an email with an unsubscribe button if it decides that the email came from a mailing list.

Trimbox does this by checking for certain pieces of data in the email, such as metadata headers and the presence of “unsubscribe” links.

If you believe that Trimbox is mistakenly missing certain mailing list emails and not marking them with the button, then we are here to help! Just reach out to us at [email protected]. We will ask you to provide a copy of the email so that we can look into why Trimbox is mishandling it.