Please ensure that any feature enhancements to email tracking features are delivered under a feature toggle so users can opt-in or opt-out. I love Newton app, but a key part of that is to be able to turn off “read receipts”.
I’d argue that the feature should be renamed to email tracking, as these are not RFC compliant read receipts, instead it is in the insertion of a tracking pixel. Under new privacy laws, such as the GDPR, an individual has a right to know who is tracking emails they receive - the current implementation is delivered secretively, which is in violation. Further enhancement of this to include geo-location data, would be problematic.