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Ongage vs Substack

Ongage: High-volume email senders using multiple SMTP/ESP connections. Substack: Writers making money doing the work they believe in. Same fact set for both, straight from each vendor's docs.

Ongage

Free tier
14-day free trial (credit card required); no free plan
Paid from
$399/mo (Starter, up to 1M emails/SMS per month) · pricing page
Public API
Yes docs
MCP server
No · No official or community MCP server found
Best for
High-volume email senders using multiple SMTP/ESP connections
Website
https://www.ongage.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?

Ongage suits high-volume email senders using multiple smtp/esp connections. 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 Ongage alternatives, Substack alternatives, or the full table.