But, if that's the case, it will only show the timestamp and IP of the Google server, and would not be a read receipt reflecting your behavior. so you may not be able to prevent it on a Gmail account if Google is in fact doing DNS lookups on the tracker link. Some mail servers do DNS lookups on these URLs as part of their spamįiltering process, so you may see the IP address of the mail serversĭNS resolvers here, as well as, or instead of, your own. The emailprivacytester web site does note that: In this particular case, you need to find a browser version and settings that will prevent DNS prefetch. Once the vulnerabilities are identified, you'll need to find browser settings (or a different client) that allow you to close ALL of the vulnerabilities. Send yourself an email from and see what (if any) tracking vulnerabilities exist in your context (mail client, browser version, etc.)Īny single tracking vulnerability provides a vehicle for creating a time-stamped read receipt (and, depending on which vulnerability, potentially much more extensive information about your client). Maybe, Google is pinging the mailtrack server when I open the email (To download that "image" and show its own copy (thus generating a timestamp event) No helpful reply yet even on Google forums:Įdit 3: This is another snippet from "show original" in Gmail, 0 pixel image I guess: Only red flag in email privacy tester was for DNS pre-fetch. What can I do to stop the received/unread/read status of my received emails from being tracked by the sender?Įdit 1: Ghostery claims it can block this ( ), but I'd prefer a DIY approach, and I don't trust Ghostery with all the data it will get access to.Įdit 2: As asked in comment, browser used by me is Firefox (I've seen it working successfully even with Chrome). This is how it shows up in the "show original" option in Gmail: I have explored Google forums but no article seems to address this exactly. I have already enabled "Do not show external images" but it does not work. These people are not part of my company but with whom I have to interact closely over long periods of time. Also sends them notifications when I read it (the worst part) Dostpny w ponad 90 jzykach i zgodny z systemami Windows, Mac i Linux, Firefox dziaa bez wzgldu na to, czego uywasz i gdzie jeste.If I have received the email in my inbox.I found out, using "show original" on Gmail, that some business associates are embedding tracking into their sent emails (without any obvious warning/declaration), which tells them :
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