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MailWizz vs Substack

MailWizz: Self-hosters and agencies running their own ESP. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.

MailWizz

Free tier
No free plan; self-hosted software sold as yearly or lifetime license
Paid from
$59/yr or $79 one-time lifetime (Regular license) · pricing page
Public API
Yes docs
MCP server
No · Third-party aggregator servers only (Pipedream, Zapier)
Best for
Self-hosters and agencies running their own ESP
Website
https://www.mailwizz.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?

MailWizz suits self-hosters and agencies running their own esp. 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 MailWizz alternatives, Substack alternatives, or the full table.