You can send a Google Hangouts invite using a link or by entering people's email addresses or phone numbers.

It’s absurd that in the year 2025, there isn’t a quick and universal platform-independent way to send text and files between a phone and a computer. You always have to rely on some mix of texting apps ...

To join a Twitter Space on a PC, you need an invitation link, usually sent to you as a message or found in a tweet.