1. Select "Constant Contact" under the "Add Ons" Function on the left hand toolbar:
2. If you haven't created an account with Constant Contact, click the option on the right to set up your account. If you already have an account, login to your account and your EventSprout account and Constant Contact account should sync up automatically.
3. Once your account is created with Constant Contact, go back into your EventSprout account and log in. The two accounts should sync up and your email lists should be visible: