Buttondown

Buttondown is run by a single developer and reflects that ethos: clean Markdown editor, transparent pricing, API-first architecture, no ad marketplace, no upsells. Beloved by technical writers.

Growth work lives or dies on targeting and measurement. What matters is whether behavioral triggers can be built without engineering time, whether the event stream supports attribution past the open, and whether deliverability holds when broadcast volume shares a reputation with product email.

Against behavior-triggered journeys, broadcasts, and winback campaigns measured on revenue, Buttondown covers scheduling, event stream, and the suppressions API, and does not cover operating track record and multi-tenant support. Whether that gap matters depends on how central those are to the build.

• Scheduling: Yes
• Event stream: Yes
• Deliverability: Good for newsletter content; small operation but careful sending practices.
• Operating since: 2017
• Suppressions API: Yes
• Best published rate per 1,000: Tiers not published in comparable form
• Multi-tenant: No
• Free tier: 100 subscribers free
• Starts at: $9/mo for 1,000 subscribers

Good for newsletter content; small operation but careful sending practices.

Developer-bloggers and indie writers who want a clean API and Markdown.