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.

At an early stage the deciding factors are what the free tier actually covers, what the first paid invoice looks like, and how much of a founding engineer's week the setup costs. Feature depth that only matters at a million sends a month is noise until it is not.

Against a waitlist, a launch announcement, onboarding email, and the first transactional sends, Buttondown covers developer experience, scheduling, SDK breadth, and webhook coverage, and does not cover operating track record. Whether that gap matters depends on how central those are to the build.

• Free tier: 100 subscribers free
• Best published rate per 1,000: Tiers not published in comparable form
• Starts at: $9/mo for 1,000 subscribers
• DX score: 9/10
• Deliverability: Good for newsletter content; small operation but careful sending practices.
• Operating since: 2017
• Scheduling: Yes
• SDKs: node, python
• Webhooks: Yes

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

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