If you manage lots of MailChimp accounts for different clients, keeping track of logins and passwords can be a headache. With account keys, you can log in to any of your accounts with one click—no need to keep track of all those password and login combinations.
Here’s how it works: Your client gives you a key to their account by sending you an email invitation (or you can give it to yourself if you’re setting up their account), and all your keys show up on a keychain in your MailChimp account. From there, you can use your own login to access any of those accounts. Plus, if you ever part ways with your client, you can simply remove their key from your keychain and get on with your life.