We apologize for the instability of composr.app and appreciate your patience. We are working on the statistics addon and trying to find an optimal way to store and render data. Unfortunately, we have yet to find a solution that can handle the traffic (and therefore, tens of millions of statistical records) of composr.app. We're working hard on one.
#5366 - List-Unsubscribe target option has misleading description
Additionally Google, Yahoo, and other providers are not accepting mailto: anymore for the Unsubscribe method; they are requiring a POST URL method. https://datatracker.ietf.org/doc/html/rfc8058
I am going to implement this and make it the default in addition to fixing the input type.
I am going to implement this and make it the default in addition to fixing the input type.