I think Alex Stamos' take on this is pretty good: https://twitter.com/alexstamos/status/1232687398250639361?s=...
Iād imagine this is almost entirely due to scale - Yang probably sends each email to <100k users while Warren/Bloomberg have 25MM+ list sizes.
Typically an email sent to 25 million people is less important than one sent to 100k, and so should be sent to promotions.
I would prefer to send them all to a Politics inbox, to be honest.
It's just an algorithm. Not a big conspiracy. You can definitely influence in which folder you end up. Seems like Buttigieg's team has done a better job at it.
M. Bloomberg HIRED Donny Deutsch to drop dirt on Trump on his Bloomberg TV in the fall of 2016. Donny Deutsch was obviously not believing in the words, which were put in his mouth by will of Bloomberg. It was UGLY and completely unnecessary. Bloomberg has the all wrong, corrupt reasons to go for presidency.
People who want to trash this study with the same old "Have they thought of $obvious_counterargument?" should first browse through their GitHub repo: https://github.com/the-markup/investigation-wheres-my-email
I did and I have gone through the mbox files and I cannot find anything that would explain the curious difference. That is not to say that there isn't a rational explanation, the probably is, but please give the study authors some credit. They aren't dumb.