That would be quite easy given that Gmail launched in 2004 as invite-only and access has been somewhat limited well into 2007.
Geez, Fedipact people talking about XMPP prove time and time again that they’re too young to remember that.
You aren’t wrong. I’m not here to defend Google or Meta. But those remembering that Google killed XMPP are only remembering what they were told. Relevance "killed” XMPP. Google certainly wasn’t it’s white knight. But more than anything, the XMPP working groups gamble of pursuing standardization didn’t result in mass adoption. When development slowed as it had to, to achieve standardization. Other services like Skype, discord, etc. All flourished and bloomed. Leaving XMPP largely irrelevant. It’s still exists to this day however. And I’m logged into it this very moment. I’ve been logged in to an XMPP server of one sort or another nearly 24/7 365 for the last 20 years.