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Mailster vs Substack
Mailster: Self-hosted newsletters without subscription fees. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.
Mailster
- Free tier
- No free plan; 14-day free trial
- Paid from
- $39 first yr Starter (promo; reg. $79/yr) · pricing page
- Public API
- No
- MCP server
- No · No official or community Mailster MCP server found.
- Best for
- Self-hosted newsletters without subscription fees
- Website
- https://mailster.co
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?
Mailster suits self-hosted newsletters without subscription fees. 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 Mailster alternatives, Substack alternatives, or the full table.