Best Newsletter Platforms

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Buttondown vs Mailchimp

Buttondown: Indie writers wanting a minimal, API-first newsletter. Mailchimp: Email and SMS marketing minus the learning curve. Same fact set for both, straight from each vendor's docs.

Buttondown

Free tier
Free for first 100 subscribers
Paid from
$9/mo (subscriber-based) · pricing page
Public API
Yes docs
MCP server
No · No official server (vendor favors its OpenAPI spec); community server on GitHub
Best for
Indie writers wanting a minimal, API-first newsletter
Website
https://buttondown.com

Mailchimp

Free tier
Free plan, up to 500 contacts (500 sends/mo)
Paid from
$13/mo (Essentials, 500 contacts); scales with contact count · pricing page
Public API
Yes docs
MCP server
Yes · Official MCP for Transactional (Mandrill) in dev docs; Marketing API MCPs are community
Best for
Email and SMS marketing minus the learning curve
Website
https://mailchimp.com

Which one?

Buttondown suits indie writers wanting a minimal, api-first newsletter. Mailchimp suits email and sms marketing minus the learning curve. Pricing changes; the fact tables above link both vendors' live pricing pages. For the rest of the field, see Buttondown alternatives, Mailchimp alternatives, or the full table.