Grow supports Kit's Hashed Subscriber Emails feature, which is used to help identify and monetize your existing newsletter subscribers that have not subscribed to your mailing list via a Grow Subscribe form.
When this feature is enabled in your Kit settings, the links included in your newsletter are modified so third-parties, like Grow, can identify subscribers who click the links.
This may sound like Grow's Email Connect links and, while these features are similar, the Kit Hashed Subscriber Emails feature supplements the identifying power of Email Connect. We recommend using both Email Connect Links and enabling the Kit Hashed Subscriber Emails feature together!
How to Enable Hashed Subscriber Email in Kit:
Step 1: Log into your Kit account
Step 2: Navigate to Settings > Advanced > Advanced Tracking
Step 3: Toggle on Automatically append hashed subscriber emails to email links