beehiivvsSubstack

beehiiv specializes in newsletter publishing and growth. Referral and audience-growth features are built around the economics of newsletters rather than generic promotional email. Publishers who need detailed ecommerce lifecycle automation may need another tool.

Substack specializes in paid newsletter publishing. Publishing and paid subscriptions sit in one familiar reader experience, reducing the work of launching a publication. Audience discovery depends partly on the platform ecosystem, while customization is narrower than a standalone site.