title: Slack API: Can I get all unread messages for a user?
body: <p>I develop a mobile app Speaking Email that reads emails out to the user, which can be used while driving to work for example. I would like to add Slack as an account type. Ideally we would have Speaking Email read out the user’s slack messages that are unread, as these will be what they need to catch up on. However it does not appear the Slack API has a method for retrieving the messages the user hasn’t read. Is this possible with the latest Slack API?</p>