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Acumbamail vs Substack
Acumbamail: Email + SMS campaigns for SMEs and agencies. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.
Acumbamail
- Free tier
- Free plan: 2,000 emails/mo, up to 250 subscribers
- Paid from
- EUR 18/mo (Basic) · pricing page
- Public API
- Yes docs
- MCP server
- Community · No official vendor MCP; third-party viaSocket MCP integration only.
- Best for
- Email + SMS campaigns for SMEs and agencies
- Website
- https://acumbamail.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?
Acumbamail suits email + sms campaigns for smes and agencies. 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 Acumbamail alternatives, Substack alternatives, or the full table.