Developer platform
A small, predictable REST API for driving campaigns, domains, calls, and messaging from your own systems.
What you can build
- Launch and monitor multi-channel campaigns programmatically.
- Search, buy, and size a sending pool of domains and mailboxes.
- Place AI voice calls and send SMS or WhatsApp from your backend.
- Score deliverability risk before you send, and stream engagement via webhooks.
Base URL
https://api.apollosender.xyz/v1
Every capability is a POST to /v1/<capability> with a JSON body (send {} when there are no arguments). Webhook management uses /v1/hooks.
Authentication
Send an API key as a Bearer token. Create one under Developers → API keys. Keys are hashed at rest and shown only once at creation.
Authorization: Bearer <your-key>