I work at an advertising agency, and we have dozens of clients/accounts tied to our usernames. Every one of those accounts has several contact lists, including test lists for our internal purposes (basically, when we send a test email, we select from a test list with the appopriate members of our team). We've recently had a change on our team, and now, I have to go through each of the accounts to make changes to the "test" lists. This is very time-consuming, especially if you have regular changes to your team.
It would be great if we had the ability to have "master" test lists, which could be uploaded and edited in one place, and all accounts under my username could access. This would benefit anyone with multiple accounts.
