This script removes the YesWare email trackers from links received in GMail. This means the sender will not know that you have clicked on their links if they use this tracking system.
Per
// ==UserScript==
// @name Removes YesWare email trackers from links in GMail
// @namespace http://tampermonkey.net/
// @version 0.1
// @description This script removes the YesWare email trackers from links received in GMail. This means the sender will not know that you have clicked on their links if they use this tracking system.
// @match https://mail.google.com/*
// @icon https://www.google.com/s2/favicons?domain=google.com
// @grant none
// ==/UserScript==
/**
* YesWare tracking links look like this:
* http://t.yesware.com/tt/d9fbcc52aa217aeec95457ead96daaee0c23b5ca/df6ccb12940ec0d69ac63a5be14e018a/a22c14da6fbc87418a7a2303a74e0ca3/realdomain.tld/some/page
*
* This script replaces the above ^ with https://realdomain.tld/some/page, which is found at the end.
*/
(function() {
'use strict';
const debug = true; // change to true to log the links found and updated
const hrefRegex = /http(?:s)?:\/\/[a-z]+\.yesware\.com\/tt\/(?:[0-9a-f]+\/){3}(.+)$/;
function isYesWareLink(anchor) {
return hrefRegex.exec(anchor.href.toString()) !== null;
}
setInterval(function() {
// search for YesWare-tracked links using XPath
var xpathResult = document.evaluate("//a[contains(@href,'.yesware.com')]", document, null, XPathResult.ANY_TYPE, null);
if (xpathResult) {
var anchor = null;
while ((anchor = xpathResult.iterateNext()) !== null) { // go over all the matching links
if (isYesWareLink(anchor)) {
if (anchor.getAttribute('data-saferedirecturl')) { // remove GMail's own redirect
anchor.removeAttribute('data-saferedirecturl');
}
var match = hrefRegex.exec(anchor.href.toString()); // match the exact tracking link format, and extract the real target
anchor.href = 'https://' + match[1]; // rewrite the link target
anchor.onclick = function(){}; // disable any JavaScript interceptors that GMail may add
anchor.click = function(){};
debug && console.log('Removed YesWare tracker, now pointing to', anchor.href); // if enabled, log to the console to list all changes made
}
}
}
}, 200); // repeat as more content is loaded
})();