The joy of Streak, and the fact that they work remotely,
is that I could see them forwarding my email to each other.
You’ll see in the map below that it was opened in multiple
locations, multiple times.
It’s like sending a text to someone you’re interested in
after a date, and knowing that they’re talking to their
friends about how to respond. They’re interested.
This doesn’t always work obviously, but it gave me a ton of
confidence in the moment.
Interesting... Tracking people opening your app. I assume this tracking using a hidden image in the email?
See [1] for a description of how the tracking works - scroll down to "So how does that tracking work?". It appears to use embedded links to message-specific 0-by-0 pixel remote images.
Someone posted a site they'd built recently that would send you an email with all the nasty tracking tricks in them, and let you see which your client fell for. I was sad to see gmail choked on most of it.
Make sure to check that the IP addresses are yours. Gmail loads images to their own servers and then serves them to your Gmail UI from there, so trackers shouldn't get your actual IP.
I just tested gmail with emailprivacytester and it didn't fall for any of them (and only fell for the image tags when I clicked a button to allow images in the e-mail to be displayed) so they may have beefed things up in response to that site
Didn't google started to host copies of images referenced in gmail a while back though? This should make this method useless for a lot of email addresses.