576
Twitter accuses Meta of hiring former staff in cease-and-desist letter
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
First of all, SMTP was much more well-established before Google came along than XMPP was.
Second, from what I've heard, Gmail (and other big players like Hotmail etc.) did have a substantial detrimental effect on the proverbial "little guy's" ability to self-host email... at least if he wants outbound messages to actually be delivered instead of blocked, anyway.