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I think it's routine to include a link to an image in every email. When the URL is loaded, they know you've opened it. But this isn't reliable. People who bl

I think it's routine to include a link to an image in every email. When the URL is loaded, they know you've opened it. But this isn't reliable. People who block images don't record that they opened it. It's entirely possible that this accounts for "No one is opening those" privacy policy emails.

XorNot 8y ago
I mean I block images but I also definitely ignore every "we're changing our privacy policy..." email.
Leynos 8y ago
I thought most email clients block third party images by default? Certainly Outlook, Thunderbird, and K9 do. This must skew those results somewhat.
- klez 8y ago
  I think I saw statistics somewhere that most people read their mail via the web interface of their email provider, not via a client, and I don't know whether web clients block remote content loading.
  - Leynos 8y ago
    I thought that might be the case.