You can communicate with other users either through chat or mail.
Chats are great for quick messages and everyday conversations.
To start a chat with someone, you can either initiate it from the search page by selecting the user you're interested in and clicking "Chat now," or you can visit their profile page and start chatting directly if they're online. On desktop, the chat window appears to the right of their profile photo, while on mobile, it's below the profile photo.
If the user is offline, you can still message them through the "Chats" section if you've previously communicated.
To check incoming messages, head to the "Chats" section. The "Active" tab displays messages from users you've already chatted with, while the "Requests" tab shows messages from new users. Additionally, you can find hidden chats in the "Hidden dialogs" tab if you've hidden them before and want to unhide them.