Something that I can't seem to find highlighted ever in any discussion about communication tools (but I acknowledge it was kind of hinted at by the federated na

Something that I can't seem to find highlighted ever in any discussion about communication tools (but I acknowledge it was kind of hinted at by the federated nature of email in this post) is that by using email you have ultimate and complete control over the information received. I mean in slack you don't have much chance to download an archive of your messages, mentions and message threads (although it might be possible,IDK). On the other hand hosting your own email server (or even by using most of the popular email providers) you have this option out of the box. And this is more important then you think. In court for example this might be the decisive factor in your favour (e.g. having something vs having nothing). But it might be useful in other disputes too, not only in legal cases.