There are several ways to send users a direct message:

  1. Visit the user's profile and tap the message icon, OR
  2. Visit the Messages screen by tapping on the messages icon at the bottom of the app.  Then tap on the users icon in the upper left corner of the screen and select the user you'd like to message, OR
  3. Visit the Search screen by tapping on the search icon at the bottom of the app.  Search for the user you'd like to message, tap on the user to visit their profile, and tap the message icon to message the user

Regardless of how you choose to send the message, all messages sent between users will show up in the message list on the Messages screen.