Is it possible to e mail a task to someone. If so, with an attachment that is with in the task?
Unfortunately, it's not possible to email a task from Todoist to someone, but you can email a message to someone else's Todoist account with Todoist Premium if the other person shares the unique email address of their project and puts your email address on their list of accepted emails.
This option does not support sending attachments, though.
You're welcome to add a request for such feature to our Votebox: http://todoist.com/Vote/ and we may consider adding it in the future.