1.0Lifehacker Australiahttps://www.lifehacker.com.auDave Greenbaumhttps://www.lifehacker.com.au/author/davegreenbaum-usa/MailTrack Tells You When Someone Has Read Your Email Messagerich600338<blockquote class="wp-embedded-content" data-secret="IBjsnRDjNu"><a href="https://www.lifehacker.com.au/2014/06/mailtrack-tells-you-when-someone-has-read-your-email-message/">MailTrack Tells You When Someone Has Read Your Email Message</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.lifehacker.com.au/2014/06/mailtrack-tells-you-when-someone-has-read-your-email-message/embed/#?secret=IBjsnRDjNu" width="600" height="338" title="“MailTrack Tells You When Someone Has Read Your Email Message” — Lifehacker Australia" data-secret="IBjsnRDjNu" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
/*! This file is auto-generated */
!function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document);
</script>
https://www.lifehacker.com.au/wp-content/uploads/2014/06/29/786511866206301762.jpg?quality=75636358Chrome: Corporate email systems often have ways of telling you if an email is read. For users of Gmail in Chrome, MailTrack creates easy read receipts. MailTrack, like other read receipt extensions, puts a tiny image in the outgoing email that displays when a recipient opens the email.