To sign in to Infusionsoft (now known as Keap Max Classic), your CRM and marketing automation platform, open your web browser and navigate to the official Keap login page, often found at keap.com/login or signin.infusionsoft.com. You'll then enter your registered email address and your corresponding password into the designated fields. If enabled, you may also need to complete two-factor authentication (2FA) by entering a verification code sent to your device. After successfully entering your credentials and any required codes, click the "Sign In" or "Login" button to access your Keap (Infusionsoft) dashboard and manage your contacts, campaigns, and sales processes.