Gmail Business e-mail
I have two e-mail accounts setup with my GMAIL business account (that uses my domain name)
Can I use TODOIST where my assistant can put or share a todo with me and vice versa? Both e-mail accounts are controlled by me on GMAIL
Yes it's possible. If you right click on a Project, Email Tasks To This Project. You will get an email which you can send tasks too, but at the bottom there is the accepted list of addresses you can receive emails from. All you'd have to do is add her email to that list.