Here are some steps to check message:

1. Click on the button called "Messages" which will take you to messages page or you can link on the given link https://idispatch.com/messages. 

2. You can search for messages in the inbox using names. 

3. Type a new message and click the send button to send message. You can also have the option to attach files, images and you can also send a new destination for the driver by clicking the GPS icon present in the messaging.