Beehiiv

Beehiiv combines email sending with audience-growth features and an ad network where subscribers see ads from other creators. The free plan supports up to 2,500 subscribers, which is generous for early-stage newsletters. Growth tools include referral programs, viral loops, and subscriber analytics built into the dashboard.

It fits creators wanting to grow beyond their initial audience and explore multiple revenue streams. The ad network lets you monetize passively while keeping your core product free, and the growth features push engaged subscribers to invite others. For small businesses and independent creators treating email as a growth channel, not just a broadcast tool, Beehiiv's philosophy aligns well.