I regard such tracking pixels as morally reprehensible. While I know most of my subscribers will disable remote images anyway, quite likely they would think poorly of me for serving them.
All the stuff I read about email marketing is all about all the kewel things one can do with email bugs.
You regard finding out whether someone you have sent a marketing email to actually opened that message as 'morally reprehensible' somehow? I know that blanket surveillance and government intrusion is a bad thing, to be minimised, but I'm not sure that also makes recipient tracking for one's own marketing purposes evil. If done right, cookies, email bugs and similar technologies are benign, or even beneficial to the recipient... It's all about finding out what the customer actually wants by observing what they do, since when you ask them, they often don't really know.
Recipients of email containing tracking beacons are generally not aware that such things exist, did not give permission for them to be used, and generally speaking, if they were aware of their existance, would opt out.
So if you use them, you're taking advantage of peoples ignorance. Seems morally reprehensible to me...
consider using your own software, but relaying through mailgun then. dumb relay, other than bounce management and notifications it won't try to append garbage to your messages.
I regard such tracking pixels as morally reprehensible. While I know most of my subscribers will disable remote images anyway, quite likely they would think poorly of me for serving them.
All the stuff I read about email marketing is all about all the kewel things one can do with email bugs.