Scroll down to where it says, "Login to Accept Invite."
If you don’t already have a free account, you can click “Sign Up to Accept Invite"
After you log in, you will be taken to a “Zap” with SMS Conversations already set up as an action (bottom left of image below). Before you can finish setting up this automation, you need to click “Dashboard” to finish connecting your SMS Conversations account to Zapier.
After clicking “Dashboard” it will take you to this screen where you can click on “Connected Accounts”.
On the “Connected Accounts” screen, you can use the search bar to find “SMS Conversations” which you can click to connect your SMS Conversations account.
This window will pop up requesting your SMS Conversations API Key to connect it to Zapier.