My phone network provider ran some "12 days of Christmas" promotion last year which entailed a spam email trying to hawk me crap I don't need every single day. When I tried to opt-out they told me it would take a month. I emailed the ICO and the network provider's complaints team and miraculously they were able to remove me from the mailing list immediately.

> but that it can take up to 10 days to stop receiving emails when you unsubscribe

This is a really bad business practice, people will just mark your mail as spam and the likelyhood of other people seeing your mails will drop

> One spammer said they could use the same servers for both but when you unsubscribe you have immediately signaled that you are now losing him money. So he uses the slowest cheapest part of the stack for removal.

Hmm, wouldn't you want to remove the money losing people as soon as possible, so you don't waste even more money on them?

It’s because transactional email and marketing email are two different systems.

> If I get a single email after I've unsubscribed I go back in my inbox and mark every single email I ever received as spam.

Fuck me, that is brutal and could absolutely ruin your SES complaint rate - even with the suppression filter on, as the emails are already in your inbox.

This is when I send them a GDPR data request followed by a deletion request. If they send me spam after, I sue them with the receipts.

I have done the opposite We had a million people enter their email over the last decade We haven’t messaged a single one.

Now we plan to start sending out a newsletter. For many, they may have forgotten downloading the app, but they might still appreciate it. If not - they can u subscribe.