I’ve never noticed ads in my email so I just went to check, and nope, no ads. I just opened the GoodReads “most anticipated 2023 books” email and no ads in it.
So. Assuming this isn’t some weird UK/EU rule I’ve not noticed, here are the adblockers I run on my iOS devices. I assume one of them is guarding me - probably AdGuard.
(AdGuard Pro is one app, but shows up as different extension options in Safari).
Someone else may be able to confirm if it’s definitely AdGuard doing the work.
This also blocks out ads on websites, I don’t see any really. Sometimes I get white boxes where the ads should be, but nowadays that seems to be rare too, dunno why!
Sorry, I can’t answer many/any questions about these apps - I’ve used Purify and AdGuard for years and they’re just one of those things that do what they’re meant to and I completely ignore their existence.