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SMTP.com vs Substack
SMTP.com: Managed high-volume email delivery. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.
SMTP.com
- Free tier
- No free plan; 30-day trial (per reviews; not shown on pricing page)
- Paid from
- $25/mo (Essential, 50,000 emails, shared IP) · pricing page
- Public API
- Yes docs
- MCP server
- No · No official MCP server; only generic third-party SMTP MCP servers exist
- Best for
- Managed high-volume email delivery
- Website
- https://www.smtp.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?
SMTP.com suits managed high-volume email delivery. 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 SMTP.com alternatives, Substack alternatives, or the full table.