Email delivery and UPI payments — two powerful APIs, one simple platform. Ship faster with infrastructure you can trust.
# Send an email with one API call
curl -X POST \
https://compur.capular.world/email/send \
-H "Content-Type: application/json" \
-H "x-api-key: your_api_key" \
-d '{"from":"hello@yourdomain.com","to":"user@example.com","subject":"Welcome!","body":"<h1>Hello from Compur</h1>"}'Products
Send transactional and marketing emails via a direct Port 25 MX connection. DKIM signed, STARTTLS encrypted — no third-party relay, no extra cost.
Accept UPI payments instantly with a clean API. Generate payment links, verify transactions, and track payouts — all through one integration.
Why Compur
Sub-second API responses. Direct mail delivery with no queue delays. Payments confirmed in real-time.
DKIM-signed emails, STARTTLS encryption, DMARC compliance. Every transaction verified and logged.
One endpoint, one API key, one cURL command. No SDKs to install, no complex configurations.
Self-hosted on your own VPS. Full control over your data, your domain, your reputation.
No third-party relays, no data sharing. Your emails and payments stay on your server.
Clean JSON responses, detailed error messages, real-time delivery logs in your dashboard.
Sign in with Google and get your API keys in under a minute.
Get Started — It's Free