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GMail does. It bounces the images via a server to strip out IP info but it opens them. AFAIK all webmail providers do too, otherwise there wouldn't be so much
by lexicality 10y ago
GMail does. It bounces the images via a server to strip out IP info but it opens them.
AFAIK all webmail providers do too, otherwise there wouldn't be so much of a market regarding email marketing with open rates and remote updating content (eg https://movableink.com/gallery/autotrader https://movableink.com/gallery/autotrader)
- derefr 10y agoI'm honestly confused that Gmail would proxy their images to anonymize them, but wouldn't just make that proxy a caching proxy, such that a given image URL would only ever get one retrieval from Gmail's servers. It'd be a huge win for them bandwidth-wise.
- stingraycharles 10y agoI would assume that a unique pixel is generated by Mailchimp for every recipient to prevent this form of caching.
- jermaustin1 10y agoSimilar, every URL in the email is completely unique to that 1 user's email. That is how you track opens and clicks back to a single user.
- sangnoir 10y ago> I'm honestly confused that Gmail would proxy their images to anonymize them, but wouldn't just make that proxy a caching proxy, They do that, but images in mail have unique URIs per recipient to enable this sort of tracking. Before Google enabled caching, it was possible for sender to figure out the exact number of times an email was read, now you can only know the first time it is read.
- deleted 10y ago[deleted]