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Resend vs Substack
Resend: Developer-first transactional email. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.
Resend
- Free tier
- Free: 3,000 emails/mo (100/day), 1 domain
- Paid from
- $20/mo (Pro, 50,000 emails) · pricing page
- Public API
- Yes docs
- MCP server
- Yes · Official MCP server (github.com/resend/resend-mcp); hosted at mcp.resend.com/mcp with OAuth
- Best for
- Developer-first transactional email
- Website
- https://resend.com
Substack
- Free tier
- Free to publish, no subscriber cap
- Paid from
- No monthly fee; 10% of paid subscription revenue plus Stripe fees · pricing page
- Public API
- Yes docs
- MCP server
- Community · Community servers on GitHub only
- Best for
- Writers making money doing the work they believe in
- Website
- https://substack.com
Which one?
Resend suits developer-first transactional email. Substack suits writers making money doing the work they believe in. Pricing changes; the fact tables above link both vendors' live pricing pages. For the rest of the field, see Resend alternatives, Substack alternatives, or the full table.