The Moodle Message system operates a little bit like Instant Messaging (IM) and a little bit like email. The main thing to remember is that if the person you are messaging is not logged in to Moodle at the same time you are, your message will automatically be forwarded to their email account. Depending on how you have your Profile preferences set, messages that are sent to you can also be sent to your email account when you are not in your course.
When to use it: Messages are best used for short conversations and inquiries such as asking questions to your instructor or classmate. It is not recommended for lengthy detailed conversations and messages do not allow formatting or attachments.
How it works: The Message tool link is located on the dropdown menu on the Navigation Bar. Click on the Messages link and you will be taken to the Messages page. (This takes you out of your course, so you might want to right-click on the link and open it in a new tab or window instead.)
Once you are in the Messages page, Click into the Message Navigation menu to select the course where the recipient is located (see below).
Once the course is selected, you will see a list of names associated with the course you have selected. Locate the person you wish to send a message and click on their name. The content window will appear for you to type in (see below). Click the Send Message button to send your message. Each message will include a timestamp denoting when it was sent.
If the recipient of your message is not online, your message will be sent to the email address specified in the message settings when the user is offline for more than the time specified.