Are you asking if you have two or stating? There is no system in place to separate business and personal, you can use Labels or Projects to do this, but to some people it's not perfect.
Besides this, you can not have two email accounts into one Todoist account.
I'm paid as a personal Account ... annual and also on a bus trial (stating).
one email is fine no problem...
Just don't want business people to see my personal stuff...
HOW DO I PREVENT THAT ?
If you do not share a project (right click, share) then no one can see that information. Though once a project is shared, all is accessible by anyone in that project.
Well that is a lot of help , thank you Brendon.. it was very helpful ...