Home › Compare › Mailjet vs Substack
Mailjet vs Substack
Mailjet: Teams sending marketing and transactional email together. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.
Mailjet
- Free tier
- Free plan: 6,000 emails/mo (200/day)
- Paid from
- $9/mo (Starter, 8,000 emails/mo) · pricing page
- Public API
- Yes docs
- MCP server
- Yes · Official open-source MCP server (read-only), in Mailjet docs
- Best for
- Teams sending marketing and transactional email together
- Website
- https://www.mailjet.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?
Mailjet suits teams sending marketing and transactional email together. 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 Mailjet alternatives, Substack alternatives, or the full table.