I can send task from my gmail account but not my company Outlook account?
TD comes back with an error that it does not recognize my corporate email, but I do sign on with it?
please try to add your company's domain to the list of approved email addresses in the "Add tasks via email" window.
To do so, click on the envelope icon in the upper-right corner of your tasks list (from any project) and add:
to the list at the bottom.