I'm pretty sure that the real reason is spam. Nobody is composing e-mail with complex designs to send their colleagues.
I feel like the major problem with almost everything that has a feed these days is the feed. Real state is a finite resource victim of the tragedy of commons: to be visible, you must post, but if others post, you are less visible, so to be even more visible, you post more, which prompts others to post even more, and anyone who doesn't play this game loses.
This happens with all feeds: chronological feeds on Tumblr, e-mail, RSS, etc.
One project I've seen that has tried a novel approach to this was https://fraidyc.at/ Essentially instead of putting all posts in a line, it's an RSS client that just tells you who has posted recently but not what they have posted.
I feel like the major problem with almost everything that has a feed these days is the feed. Real state is a finite resource victim of the tragedy of commons: to be visible, you must post, but if others post, you are less visible, so to be even more visible, you post more, which prompts others to post even more, and anyone who doesn't play this game loses.
This happens with all feeds: chronological feeds on Tumblr, e-mail, RSS, etc.
One project I've seen that has tried a novel approach to this was https://fraidyc.at/ Essentially instead of putting all posts in a line, it's an RSS client that just tells you who has posted recently but not what they have posted.