Convert Email Address to Duckduckgo Anonymous email format

Converts an email to duckgo anonymous email format, now with minimize functionality

目前為 2025-03-16 提交的版本,檢視 最新版本

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name         Convert Email Address to Duckduckgo Anonymous email format
// @namespace    http://tampermonkey.net/
// @author       aspen138
// @version      1.1.3
// @description  Converts an email to duckgo anonymous email format, now with minimize functionality
// @match https://126.com/*
// @match https://abv.bg/*
// @match https://adelphia.net/*
// @match https://aim.com/*
// @match https://alice.it/*
// @match https://aol.com/*
// @match https://att.net/*
// @match https://bellsouth.net/*
// @match https://bigpond.com/*
// @match https://bluewin.ch/*
// @match https://blueyonder.co.uk/*
// @match https://bol.com.br/*
// @match https://btinternet.com/*
// @match https://charter.net/*
// @match https://comcast.net/*
// @match https://cox.net/*
// @match https://cs.com/*
// @match https://earthlink.net/*
// @match https://email.mail.com/*
// @match https://embarqmail.com/*
// @match https://excite.com/*
// @match https://exmail.qq.com/*
// @match https://work.weixin.qq.com/mail/
// @match https://fastmail.com/*
// @match https://free.fr/*
// @match https://frontiernet.net/*
// @match https://ge.com/*
// @match https://gmail.com/*
// @match https://gmx.com/*
// @match https://hetnet.nl/*
// @match https://home.nl/*
// @match https://hp.com/*
// @match https://icloud.com/mail/*
// @match https://ig.com.br/*
// @match https://insightbb.co/*
// @match https://juno.com/*
// @match https://laposte.net/*
// @match https://libero.it/*
// @match https://mac.com/*
// @match https://mail.126.com/*
// @match https://mail.163.com/*
// @match https://mail.apple.com/*
// @match https://mail.aol.com/*
// @match https://mail.fastmail.com/*
// @match https://mail.gmx.com/*
// @match https://mail.google.com/*
// @match https://mail.proton.me/*
// @match https://mail.qq.com/*
// @match https://mail.ru/*
// @match https://mail.sina.com/*
// @match https://mail.sina.com.cn/*
// @match https://mail.yahoo.com/*
// @match https://mail.yandex.com/*
// @match https://mail.zoho.com/*
// @match https://mchsi.com/*
// @match https://me.com/*
// @match https://mindspring.com/*
// @match https://msn.com/*
// @match https://netscape.net/*
// @match https://netzero.com/*
// @match https://netzero.net/*
// @match https://ntlworld.com/*
// @match https://optonline.net/*
// @match https://optusnet.com.au/*
// @match https://orange.fr/*
// @match https://outlook.com/*
// @match https://outlook.live.com/*
// @match https://pacbell.net/*
// @match https://peoplepc.com/*
// @match https://planet.nl/*
// @match https://prodigy.net/*
// @match https://proton.me/*
// @match https://rediffmail.com/*
// @match https://roadrunner.com/*
// @match https://rogers.com/*
// @match https://sbcglobal.net/*
// @match https://shaw.ca/*
// @match https://sky.com/*
// @match https://skynet.be/*
// @match https://sympatico.ca/*
// @match https://t-online.de/*
// @match https://talktalk.net/*
// @match https://telenet.be/*
// @match https://telus.net/*
// @match https://terra.com.br/*
// @match https://tiscali.co.uk/*
// @match https://tiscali.it/*
// @match https://trainingelite.com/*
// @match https://uol.com.br/*
// @match https://us.army.mil/*
// @match https://verizon.net/*
// @match https://videotron.ca/*
// @match https://virgilio.it/*
// @match https://wanadoo.fr/*
// @match https://web.de/*
// @match https://webtv.net/*
// @match https://windstream.net/*
// @match https://wp.pl/*
// @match https://www.mail.com/*
// @match https://xtra.co.nz/*
// @match https://yahoo.ca/*
// @match https://yahoo.co.id/*
// @match https://yahoo.co.in/*
// @match https://yahoo.co.uk/*
// @match https://yahoo.com/*
// @match https://yahoo.com.ar/*
// @match https://yahoo.com.au/*
// @match https://yahoo.com.br/*
// @match https://yahoo.com.cn/*
// @match https://yahoo.com.mx/*
// @match https://yahoo.com.sg/*
// @match https://yahoo.com/mail/*
// @match https://yahoo.de/*
// @match https://yahoo.es/*
// @match https://yahoo.fr/*
// @match https://yahoo.in/*
// @match https://yahoo.it/*
// @match https://ymail.com/*
// @match https://yandex.com/mail/*
// @match https://yandex.ru/*
// @match https://zoho.com/mail/*
// @icon         data:image/svg+xml;base64,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
// @iconbackup   https://ssl.gstatic.com/ui/v1/icons/mail/rfr/gmail.ico
// @license      MIT
// @grant        GM_getValue
// @grant        GM_setValue
// ==/UserScript==


(function() {
    'use strict';
    // Create a container for the floating box
    const container = document.createElement('div');
    container.id = 'emailConverter_container';
    container.style.position = 'fixed';
    container.style.bottom = '20px';
    container.style.left = '20px';
    container.style.zIndex = '9999';
    container.style.padding = '10px';
    container.style.backgroundColor = '#fff';
    container.style.border = '1px solid #ccc';
    container.style.borderRadius = '5px';
    container.style.boxShadow = '0 0 5px rgba(0,0,0,0.3)';
    container.style.fontFamily = 'Arial, sans-serif';
    container.style.maxWidth = '280px';

    // Title or heading
    const heading = document.createElement('h4');
    heading.id = 'emailConverter_heading';
    heading.textContent = 'Email Converter';
    heading.style.margin = '0 0 10px 0';
    container.appendChild(heading);

    // Close (minimize) button
    const minimizeButton = document.createElement('button');
    minimizeButton.id = 'emailConverter_minimizeBtn';
    minimizeButton.textContent = 'X';
    minimizeButton.style.position = 'absolute';
    minimizeButton.style.top = '5px';
    minimizeButton.style.right = '10px';
    minimizeButton.style.cursor = 'pointer';
    minimizeButton.style.border = 'none';
    minimizeButton.style.background = 'none';
    minimizeButton.style.fontSize = '16px';
    container.appendChild(minimizeButton);

    // This button will appear when the container is minimized
    const restoreButton = document.createElement('button');
    restoreButton.id = 'emailConverter_restoreBtn';
    restoreButton.textContent = 'Email Converter';
    restoreButton.style.position = 'fixed';
    restoreButton.style.left = '0';
    restoreButton.style.bottom = '20px';
    restoreButton.style.zIndex = '9999';
    restoreButton.style.padding = '6px 12px';
    restoreButton.style.cursor = 'pointer';
    restoreButton.style.border = '1px solid #ccc';
    restoreButton.style.borderRadius = '5px';
    restoreButton.style.fontFamily = 'Arial, sans-serif';
    restoreButton.style.backgroundColor = '#fff';
    restoreButton.style.boxShadow = '0 0 5px rgba(0,0,0,0.3)';
    container.style.display = 'none';
    restoreButton.style.display = 'block';
    document.body.appendChild(restoreButton);

    // Event listeners for minimize/restore
    minimizeButton.addEventListener('click', () => {
        container.style.display = 'none';
        restoreButton.style.display = 'block';
    });

    restoreButton.addEventListener('click', () => {
        container.style.display = 'block';
        restoreButton.style.display = 'none';
    });

    // Wrapper to neatly organize form elements
    const formWrapper = document.createElement('div');
    formWrapper.id = 'emailConverter_formWrapper';
    formWrapper.style.display = 'flex';
    formWrapper.style.flexDirection = 'column';
    formWrapper.style.gap = '5px';

    // Retrieve stored values (if any)
    const storedSendTo = GM_getValue('converterSendTo', '');
    const storedDdgo = GM_getValue('converterDdgo', '');

    // Label and input for "send email to who?"
    const labelSendTo = document.createElement('label');
    labelSendTo.id = 'emailConverter_labelSendTo';
    labelSendTo.textContent = 'Send email to who: ';
    labelSendTo.style.marginRight = '10px';

    const inputSendTo = document.createElement('input');
    inputSendTo.id = 'emailConverter_inputSendTo';
    inputSendTo.type = 'text';
    inputSendTo.placeholder = 'e.g. [email protected]';
    inputSendTo.style.width = '250px';
    inputSendTo.value = storedSendTo;

    const rowSendTo = document.createElement('div');
    rowSendTo.id = 'emailConverter_rowSendTo';
    rowSendTo.appendChild(labelSendTo);
    rowSendTo.appendChild(inputSendTo);

    // Label and input for "your ddgo mail?"
    const labelDdgo = document.createElement('label');
    labelDdgo.id = 'emailConverter_labelDdgo';
    labelDdgo.textContent = 'Your DuckduckGo address: ';
    labelDdgo.style.marginRight = '10px';

    const inputDdgo = document.createElement('input');
    inputDdgo.id = 'emailConverter_inputDdgo';
    inputDdgo.type = 'text';
    inputDdgo.placeholder = 'e.g. [email protected]';
    inputDdgo.style.width = '250px';
    inputDdgo.value = storedDdgo;

    const rowDdgo = document.createElement('div');
    rowDdgo.id = 'emailConverter_rowDdgo';
    rowDdgo.appendChild(labelDdgo);
    rowDdgo.appendChild(inputDdgo);

    // Convert button
    const buttonConvert = document.createElement('button');
    buttonConvert.id = 'emailConverter_convertBtn';
    buttonConvert.textContent = 'Convert';
    buttonConvert.style.marginRight = '10px';
    buttonConvert.style.cursor = 'pointer';
    buttonConvert.style.width = '258px';

    // Output field for converted email
    const labelOutput = document.createElement('label');
    labelOutput.id = 'emailConverter_labelOutput';
    labelOutput.textContent = 'Converted: ';
    labelOutput.style.marginRight = '10px';

    const outputEmail = document.createElement('input');
    outputEmail.id = 'emailConverter_outputEmail';
    outputEmail.type = 'text';
    outputEmail.readOnly = true;
    outputEmail.style.width = '250px';

    const rowOutput = document.createElement('div');
    rowOutput.id = 'emailConverter_rowOutput';
    rowOutput.appendChild(labelOutput);
    rowOutput.appendChild(outputEmail);

    // Feedback or error message area
    const feedback = document.createElement('p');
    feedback.id = 'emailConverter_feedback';
    feedback.style.color = 'red';
    feedback.style.fontSize = '14px';
    feedback.style.margin = '5px 0 0 0';
    feedback.style.minHeight = '18px';
    feedback.textContent = '';

    // Conversion function
    buttonConvert.addEventListener('click', () => {
        const originalEmail = inputSendTo.value.trim();
        const ddgoEmail = inputDdgo.value.trim();
        let errorMessage = '';

        if (!originalEmail) {
            errorMessage = 'Please enter an email address to convert.';
        } else if (!ddgoEmail) {
            errorMessage = 'Please enter your DDG address.';
        }

        if (errorMessage) {
            feedback.textContent = errorMessage;
            outputEmail.value = '';
            return;
        }

        const converted = originalEmail.replace(/@/g, '_at_') + '_' + ddgoEmail;
        outputEmail.value = converted;
        feedback.textContent = '';

        GM_setValue('converterSendTo', originalEmail);
        GM_setValue('converterDdgo', ddgoEmail);
    });

    // Assemble elements in the container
    formWrapper.appendChild(rowSendTo);
    formWrapper.appendChild(rowDdgo);
    formWrapper.appendChild(buttonConvert);
    formWrapper.appendChild(rowOutput);
    formWrapper.appendChild(feedback);

    container.appendChild(formWrapper);
    document.body.appendChild(container);
})();