Just like Evernote have an outlook addon that let you take an email and directly assign it to your app. Allow to set tags and schedule
Another Outlook feature that would be helpful is the ability to drag an email to convert to a task and have it open back up as an email when you're ready to complete the task. Todoist has this feature in their Outlook plugin.
This is an excellent idea, I would also add that you would want to sync tasks with outlook. taking anything created in outlook tasks and bring it down - the way MyLifeOrganized does it .