Re: [Imap-protocol] Registration of keyword which enables fetching external images

Hi Jan,

> This is done
> for privacy reasons so that we don't leak information about the recipient
> by accident. However, once a request to a given external URL has been made,
> the privacy issue doesn't matter anymore (the information has leaked
> already). It is therefore typically safe to make this per-message setting
> permanent

Additional requests may leak additional information. Examples:

* I've viewed an offer letter 10 times and thus may be interested enough to be squeezed for more money.
* I was paging through last week's email to find something and my MUA downloads external images from "politically-sensitive-topic.org" while I'm now travelling overseas in a country where that topic is illegal.
* I allowed downloading linked images from my desktop MUA and now my other devices respect that setting, exposing information on the complete set of MUA software I use and the region I'm currently in.

-Neil
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