Not trying to be rude, but If you put your unsubscribe page behind a captcha I am going to mark you as spam and move on.

> You could have been notified when the message was read a full 15 years before email had something similar tacked on.

Which spammers and marketers would have loved.

I have "load remote content" disabled on my e-mail client so that tracking graphics/pixels do not leak such information to the sender.

Are you saying that email scanners were not only fetching the unsubscribe link but also submitting the “unsubscribe” button/form on the page?

I find this hard to believe since everyone else seems to manage this without a Captcha.

If I cannot just click a button and unsubscribe, guess what, you are malicious spam.

> we have to put our unsubscribe page behind a captcha.

Hope you're not ever sending email to EU residents!

Have you ever heard of `List-Unsubscribe`? It solves your problem without massively annoying people and breaking accessibility and/or the law.

I think you're referring to things like tracking pixels, whereas the author was likely referring to _actual_ email read receipts, where the sender can request a read receipt, and the receiver's MUA will prompt them to send one.

No, it’s largely broken because of spam. I don’t want to be signed up to your useless email marketing list, and I want to use an email client that makes unsubscribing as easy as possible.

> Thanks to email security scanners this feature is largely broken.

One person's feature is another's anti-feature. I'm glad it's dead.

waiting for inevitable "gmail bad, why it spams my emails so much" rant