The platform · mail.castomapi.com
Inbound mail for the platform: addresses that receive, parse and hand messages to the product that owns them.
Receive-only by design. A product gets an address; what arrives is parsed and delivered to it as structured data. Sending goes through the customer's own SMTP via the Engine's e-mail endpoints.
This service publishes no public OpenAPI document; the operations below are from its own documentation. Base URL: https://mail.castomapi.com
The platform
Auth
One identity for every product: sign-in, sessions, OAuth clients, projects and the revocation keys every service checks.
Billing & plans
Plan entitlements for every castomo product: Stripe subscriptions in, effective quotas out, pushed to the product that enforces them.
Pay
Payments between people and businesses on the platform, with Stripe underneath.
Book
Bookings and availability: resources, slots, reservations, reminders and refunds by policy.
Events
A free global events API: what is happening where, for dashboards and sites that need a calendar they did not write.
Data
Free global reference data: countries, languages, currencies, logistics, standards — tens of millions of records, no key.