Most newsletter platform comparisons focus on pricing, templates, and user interface design.

That is useful when the goal is simply to publish a weekly email. But if you are building a paid newsletter, a media business, or a content engine connected to other applications, the technical layer matters just as much.

APIs, webhooks, DNS configuration, template control, data portability, and payment ownership determine how far a platform can grow before it becomes a constraint.

This comparison examines six newsletter platforms:

Beehiiv