Once a company wouldn't stop emailing me despite unsubscribing. I sent them multiple emails with no response.
Then I heard that if enough people mark a sender as spam, Google starts automatically considering them spam for everyone. I emailed them to let them know this, and told them if they didn't remove me, I would mark them as spam which would affect them majorly.
They replied to my email within minutes and told me I was unsubscribed and would never receive another email from them lmao
Why would you issue a warning to a spammer instead of using the tools as intended, and just marking it as spam anyway? It clearly was. All you did here was pass the buck to someone else now.
Some email systems now won't mark things as spam. They'll have a popup window asking if you want them to help you unsubscribe from the shit. I about blew it when I saw that.
Ive seen email systems with that, I've never seen an email system use that as a substitute for a Spam or junk flag however, I think maybe either you're confused or have a really odd mail client
Gmail does it. Emails from mailing lists often have a header that specifies an email address you can email to unsubscribe (you just need to send an empty email with a subject of "unsubscribe" to the address). Gmail detects this header and asks you if you want to unsubscribe instead of marking as spam. If you do, it sends the unsubscribe email for you.
It usually is a footer, not a header, in my personal experience, these companies don't want the word "unsibscribe" put in your head until they are done trying to reel you in with other things. It would be asinine to put it as a header.
Also, the unsibscribe feature in Gmail is not the same as reporting as junk/spam, which Gmail still allows as an option.
Unsubscribe option attempts to use the email address as you've already mentioned. The spam and junk flag automatically moves mail from those addresses into your junk folder. These are not the same things.
Sorry, I meant a header as in where the things like the subject line, servers it was sent via, etc. are stored. It's a part of the email that isn't user-visible. The unsubscribe email isn't visible to the user unless you view the raw source of the email, but email clients can use it.
I know marking as spam isn't the same as unsubscribing. Gmail is trying to suggest unsubscribing instead of marking as spam which is reasonable (why mark it as spam when you could just unsubscribe and never get it in the first place?)
You mark it as spam so that Google can add it to the metrics and stop allowing that account to spam everyone. If you just unsubscribe it only benefits you. If you flag it as spam it benefits everyone using the service.
Technically there's no authority to determine if you ever did "opt in", so that is a moot point. I get spam all the time claiming I opted in, when I know I've not. Nothing in an email is a guarantee, to include statements that you wanted this email or agreed to be contacted.