How to send private messages and make calls in Slack

While Slack began as a workplace instant-messaging tool, over the last few years it has become popular as a way for anyone to keep in contact with a group of friends, colleagues, or family. It now even offers a way for groups to create in-the-moment huddles," in which two or more people can move from text to audio - if you're on a paid plan.
Although Slack is largely intended for group collaboration, it also has tools if you just want to chat one-on-one with somebody. Here, we're going to go over some of the ways you can have a private text, audio, or video conversation with one other person via the free version of Slack.
Text conversationsUsing the Slack desktop app:
- If you've recently sent a personal message to someone, you'll find...