# Use WhatsApp Business in Toky
When a customer sends a message to your business on WhatsApp, **a 24-hour chat session will start.** You will see a notification on the side menu with an unread message count.
For session messages, you pay a flat fee per inbound or outbound messages, of $0.005.
Once a session starts you will see the timer at the top of the chat that indicates the amount of time you have to reply. This timer resets every time your customer responds.
If you fail to respond within the time limit, you will see a "time expired" notification instead of the timer.
You can receive **text messages, image, video, audio, files, and location pins**, and can send text up to **4096** characters long.\
To **SEND** a message simply write on the **TEXT AREA** and **CLICK SEND** or **PRESS** **CRTL+ENTER.**
On the sidebar menu you can see how many unread Messages you have in all of you numbers.
Once you are inside the conversation screen there are more indicators of which numbers have unread messages on the top left you can select the enabled between the enabled Whatsapp numbers and check which one has unread messages\
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On the conversations list you will see a blue dot on each of the conversations that contain unread messages, if you or any other agent click on them they will be marked as read if you continue to see the blue dot is because you have older unread messages just scroll down until you see them all.
There is a typing indicator to avoid typing collisions with other agents if you\
see it it means another Toky agent is typing, it will be next to the character count under the reply box.\
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If you're finished with a conversation, you can select and archive it.
Once archived you can’t reply to your customer anymore unless your customer starts a new conversation.
On the top left, you can change the current number you are using or filter the conversations you are reading by All, Unread and Archived Conversations.
