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Sendloop vs Substack

Sendloop: Small businesses wanting simple email marketing. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.

Sendloop

Free tier
Free plan, unlimited subscribers; sending billed $0.01/email
Paid from
$39/mo (Pro, up to 45,000 subscribers) · pricing page
Public API
Yes docs
MCP server
No · Third-party aggregator servers only (Composio)
Best for
Small businesses wanting simple email marketing
Website
https://sendloop.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?

Sendloop suits small businesses wanting simple email marketing. 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 Sendloop alternatives, Substack alternatives, or the full table.