Tampermonkey script that automatically selects the next email in ProtonMail after archiving, deleting or spamming the current one.

proton-auto-next.md

Install by clicking here

(requires Tampermonkey browser extension to be installed)

proton-auto-next.user.js

// ==UserScript==
// @name         Select next mail
// @namespace    http://tampermonkey.net/
// @version      2024-04-22
// @description  Automatically selects the next email in ProtonMail after archiving, deleting or spamming the current one.
// @author       evaera
// @match        *://mail.proton.me/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=proton.me
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    const pattern = new RegExp("https://mail.proton.me/u/\\d+/[a-z]+/?$");

    function selectNextItem() {
        // Make sure something is still not selected, this function called be called multiple times on a delay
        if (!pattern.test(location.href)) {
            return
        }

        console.log("Select next item");
        const parentContainer = document.querySelector(".items-column-list-container");
        if (!parentContainer) {
            setTimeout(() => {
                selectNextItem()
            }, 300);

            return
        };

        const firstItem = parentContainer.querySelector('.item-container-wrapper');
        if (firstItem) {
            triggerEnterKey(firstItem);
        }
    }

    function triggerEnterKey(element) {
        const enterKeyEvent = new KeyboardEvent('keydown', {
            key: 'Enter',
            bubbles: true,
            cancelable: true
        });
        element.dispatchEvent(enterKeyEvent);
    }

    let lastUrl;
    new MutationObserver(() => {
        const url = location.href;
        if (url !== lastUrl) {
            lastUrl = url;

            if (pattern.test(url)) {
                selectNextItem();
            }
        }
    }).observe(document, {subtree: true, childList: true});


})();