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Mailchimp vs Postmark
Mailchimp: Email and SMS marketing minus the learning curve. Postmark: Developers needing fast, reliable transactional email. Same fact set for both, straight from each vendor's docs.
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
Postmark
- Free tier
- Free developer plan: 100 emails/mo, never expires
- Paid from
- $15/mo (Basic, 10,000 emails) · pricing page
- Public API
- Yes docs
- MCP server
- Yes · Official MCP server (ActiveCampaign/postmark-mcp), 24 tools
- Best for
- Developers needing fast, reliable transactional email
- Website
- https://postmarkapp.com
Which one?
Mailchimp suits email and sms marketing minus the learning curve. Postmark suits developers needing fast, reliable transactional email. Pricing changes; the fact tables above link both vendors' live pricing pages. For the rest of the field, see Mailchimp alternatives, Postmark alternatives, or the full table.