Newsletter and creator tools, compared like a developer would: pricing at scale, APIs, lock-in and the fine print.https://mastheadlab.com/https://mastheadlab.com/best-newsletter-platform-with-api/https://mastheadlab.com/best-newsletter-platform-with-api/Kit, MailerLite, beehiiv, GetResponse and ActiveCampaign APIs compared on what matters to developers: sending, webhooks, rate limits and plan gates.Tue, 13 Oct 2026 00:00:00 GMThttps://mastheadlab.com/beehiiv-vs-kit-for-developers/https://mastheadlab.com/beehiiv-vs-kit-for-developers/beehiiv vs Kit for developers: who can publish via API, webhook delivery and limits, custom domains, data export, and cost at 1k, 10k and 50k.Mon, 12 Oct 2026 00:00:00 GMThttps://mastheadlab.com/cheapest-newsletter-platform-10k-subscribers/https://mastheadlab.com/cheapest-newsletter-platform-10k-subscribers/What Kit, systeme.io, GetResponse, MailerLite and beehiiv cost at 1k, 5k, 10k and 25k subscribers, and what you give up at each price.Mon, 12 Oct 2026 00:00:00 GMThttps://mastheadlab.com/kajabi-alternatives-for-developers/https://mastheadlab.com/kajabi-alternatives-for-developers/systeme.io, Teachable, Thinkific and Podia priced against Kajabi at $2k and $10k a month, plus what each one drops from Kajabi's bundle.Mon, 12 Oct 2026 00:00:00 GMThttps://mastheadlab.com/substack-alternatives/https://mastheadlab.com/substack-alternatives/Leaving Substack for a real API and your own domain? Four alternatives compared on API access, migration of posts and paid subscribers, and the 10% break-even.Mon, 12 Oct 2026 00:00:00 GMThttps://mastheadlab.com/teachable-vs-thinkific-coding-course/https://mastheadlab.com/teachable-vs-thinkific-coding-course/Code blocks, video limits, transaction-fee break-even math and export lock-in, compared for developers selling a programming course.Mon, 12 Oct 2026 00:00:00 GMT