Working with a traditional mailbox requires a minimum of 1 hour a day to process the inbox. To overcome this problem, Odoo has developed a new way of communication. The way emails are integrated in Odoo makes them the backbone of the whole communication system. It has changed the way people work with emails, as each email is not just information, but a to-do list for you:
To process your inbox, you have to pass through the linked document on each email, marked as read. You can also reply straight away on the document, and the reply email will be sent to all the followers of that document.