https://www.ett-online.de/out/ett/src/js/newsletter-prefill.js?1787922184

1(function (window, document) {
2    'use strict';
3
4    function prefillNewsletterEmail() {
5        var emailField = document.getElementById('EMAIL');
6
7        if (!emailField || !window.URLSearchParams) {
8            return;
9        }
10
11        var email = new window.URLSearchParams(window.location.search).get('email');
12
13        if (!email) {
14            return;
15        }
16
17        email = email.trim();
18
19        if (!email) {
20            return;
21        }
22
23        emailField.value = email;
24        emailField.dispatchEvent(new window.Event('input', {bubbles: true}));
25        emailField.dispatchEvent(new window.Event('change', {bubbles: true}));
26    }
27
28    if (document.readyState === 'loading') {
29        document.addEventListener('DOMContentLoaded', function () {
30            window.setTimeout(prefillNewsletterEmail, 0);
31        });
32    } else {
33        window.setTimeout(prefillNewsletterEmail, 0);
34    }
35}(window, document));