I have downloaded the App for Outlook, but my company uses MS 365 as the desktop outlook. Is it possible to attach Todoist to my 365 account?
I'm afraid this may not be possible right now. Our Outlook plugin only works with Outlook 2007 and 2010, but we will certainly consider developing a new version supporting MS 365 as well. You're welcome to add a request to our Votebox: http://todoist.com/Vote/
For now, as a workaround, if you wish to manage your emails with Todoist, you can forward them to the unique email address of your project. The subject will become the task name and the content of the mail - a task note. For detailed information about this feature, enter a specific project, click on the gear icon at the top of the list ("Task actions") and choose "Email tasks to this project".