3 ms·
Now it will seem to the sender that 100% of e-mails sent to Gmail recipients have been opened, rendering actual measurement impossible. A unique ID is useless
by dingaling 13y ago
Now it will seem to the sender that 100% of e-mails sent to Gmail recipients have been opened, rendering actual measurement impossible. A unique ID is useless if all unique IDs are requested all the time.
I'm sure they built-in rate-limiting to prevent DDOSing the sender's image server...
- Aldo_MX 13y agoOr possibly they could use heuristics to detect a newsletter and deliver the first fetched image to every recipient of the same newsletter.
- pbreit 13y agoApparently not. First, only messages read in gmail.com and Gmail mobile clients (not any other email clients). And apparently the image is not requested from the sender until the message is opened. Finally, apparently any querystring parameters will continue to function as usual.