ReferralHero allows you to automatically sync your subscribers with your Intercom account.
To connect your Intercom account, go to your campaign dashboard > Edit Campaign > Integrations > Intercom. After you connect your account, you can enable/disable the sync between ReferralHero and Intercom.
NOTE: only people who sign up on ReferralHero AFTER you enable the Intercom integration will be added to your Intercom account.
When a person signs up we send a bunch of extra data to Intercom that is stored in your account's user attributes. (Refer to the official Intercom Documentation for more info).