[piva00]

Or some simply do not unsubscribe you.

After feeling gaslighted by some spam emails that I was very sure I had unsubscribed from, I started keeping a spreadsheet to track my requests with date, and what link I followed to get removed. Almost 25% of my requests have never been honoured, it's disgusting.

[offices]

Well, computers are tough. It takes ~31 days to update a database, right?

[gafage]

A database? No, that's instant.

But when you have dozens of databases, each owned by a different company, and they feed off each other perhaps once a day, then you can end up with a long time before all your data is deleted.

[MereInterest]

And that’s their problem, not mine. If they structure their email campaigns such that it takes a long time to update every database, that’s a design choice on their side. When that design choice means they effectively ignore my unsubscribe, well, I don’t see why that should receive any sympathy.