Userscript, which adds the ability to mass-disable all email notifications on Patreon.

patreonemail.user.js

// ==UserScript==
// @name     Patreon mass email-settings toggle
// @name     Adds button to mass-change mail notifications on Patreon
// @version  1
// @author Anders O.H Moberg
// @homepageURL https://a-moberg.com/
// @grant    none
// @match    https://www.patreon.com/settings/email
// @updateURL https://gist.github.com/AndersMoberg/cd7ed41d10381a16718d3e9fcc714001/raw/patreonemail.user.js
// @downloadURL https://gist.github.com/AndersMoberg/cd7ed41d10381a16718d3e9fcc714001/raw/patreonemail.user.js
// ==/UserScript==

const waitFor = (delay) => new Promise((resolve) => setTimeout(resolve, delay));
const delayMs = 1000;

let header = document.querySelector("header");

let disableButton = document.createElement("button");
disableButton.innerText = "Disable all";
disableButton.onclick = async () => {
  const result = document.querySelectorAll("button[aria-checked=true]");

  for (const button of result) {
    button.scrollIntoView();
    button.dispatchEvent(
      new MouseEvent("click", {
        view: window,
        bubbles: true,
        cancelable: true,
        buttons: 1,
      })
    );
    await waitFor(delayMs);
  }
};

header.appendChild(disableButton);