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Mailmodo vs Substack

Mailmodo: Interactive emails that drive conversions. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.

Mailmodo

Free tier
No free plan; 21-day free trial
Paid from
$149/mo (Lite, billed annually) · pricing page
Public API
Yes docs
MCP server
Yes · Official mailmodo-mcp server on the vendor's GitHub org (contacts, campaigns, templates).
Best for
Interactive emails that drive conversions
Website
https://www.mailmodo.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?

Mailmodo suits interactive emails that drive conversions. 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 Mailmodo alternatives, Substack alternatives, or the full table.