How it plugs in
—Public API
NoOpen source
YesFree tier
Signal on Fax APIs5.8#9 of 26
MintFax is an outbound fax API that lets applications send faxes and track delivery.

Pricing
- 1,000,000+ pagesPrepaid credits; $0.036 per page · 1,000,000+ pages per month$0.04/mo
- 100,000+ pagesPrepaid credits; $0.048 per page · 100,000+ pages per month$0.05/mo
- StandardPrepaid credits; $0.060 per page · Standard monthly volume$0.06/mo
As mintfax.com lists them, checked 8 Oct 2026.