Smart newsletter and course creators use a SparkLoop referral program to get more, high-quality email subscribers on autopilot. Exactly like how Morning Brew and The Hustle grew to millions of subscribers.

Add a Magic Link in any newsletter and let their readers opt-in to your email-list with just one click — for free!

We completely remove friction from your opt-in process. So your newsletter sponsorships and cross-promotions get 20-50% more signups!

Proof helps newsletter creators increase trust for potential subscribers by showing independently verified metrics about their newsletter.

For example, display how many total subscribers you have or how many new subscribers you got last week/month.