Ship transactional and marketing email from your own stack
A REST API that fits into whatever you're already building — with fast integration, scoped keys, and signed webhooks so you can trust every event.
REST API
A documented REST endpoint for sending transactional email, with template and merge-tag support.
Verified Senders
Send from your own domain after DKIM/SPF/DMARC verification.
Webhooks
HMAC-signed events for delivered, opened, clicked, bounced, complained, and unsubscribed.
Scoped API Keys
Issue keys with exactly the permissions each integration needs, and revoke them instantly.
Send a transactional email in one request
curl https://api.inboxili.com/api/v1/transactional/send \
-H "Authorization: Bearer ik_live_••••••••••••••••" \
-H "Content-Type: application/json" \
-d '{
"to": "ada@example.com",
"from_email": "hello@yourdomain.com",
"from_name": "Acme Co",
"subject": "Your receipt from Acme Co",
"html_body": "<p>Thanks for your order, {{first_name}}!</p>",
"template_data": { "first_name": "Ada" }
}'Every request is authenticated with Authorization: Bearer <api_key> — keys are prefixed ik_live_ and shown in full exactly once, at creation time.
API keys carry exactly the permissions you grant
| Scope | Grants |
|---|---|
| transactional:send | Send one-off transactional emails via the API. |
Combine any set of scopes per key, and revoke a key instantly from your workspace settings — no rotating every integration's credentials at once.
React to delivery events in real time
Every webhook payload is signed with HMAC so you can verify it actually came from Inboxili, with automatic retries and a delivery log if an endpoint is briefly unreachable.
Every endpoint, request, and response schema
The interactive API reference is generated directly from Inboxili's live OpenAPI schema, so it never drifts from what's actually deployed — try requests right from the browser.
Open developer docsSend your first email in minutes
Verify a domain, create an API key, and make your first request. Campaigns, automation and AI email are in the same workspace when you need them.
Need help moving over? Talk to us.