Email Infrastructure for AI Agents
Create inboxes, send and receive emails via API. Pre-decoded JSON webhooks. Open source, built for speed.
create-inbox.ts
import Sendook from '@sendook/node';
const client = new Sendook('SENDOOK_API_KEY');
const inbox = await client.inbox.create();
// → { id: "inbox_a1b2c3", email: "[email protected]" }
Built for developers building the future
AI Agents
Transactional Email
Customer Support
Automation
Core Features
- One API call creates a working inbox. No DNS setup, no waiting.
- Get notified instantly when emails arrive. No polling, no delays.
- Every email arrives pre-decoded as structured JSON. Attachments included.
Built for Speed
Simple APIs for sending, replying, and searching emails. Ship your product, not email infrastructure.
- Send emails and replies with a single API call. Threading handled automatically.
- Every email is indexed. Query by sender, subject, date, or body content.
- Proven infrastructure with built-in spam filtering and deliverability monitoring.
<100msAvg response
99.9%Uptime SLA
API Endpoints
POST/messages/send42ms
GET/messages/search67ms
POST/messages/reply38ms
Spam filtering Auto-threading Full-text search
Everything You Need
A complete email API. Simple interface, powerful under the hood.
RESTful APIs
Create inboxes, send emails, search messages. Full programmatic control over everything.
Webhook Events
Get notified for incoming emails, delivery status, bounces, and opens.
Thread Management
Automatic email threading and conversation tracking out of the box.
Attachment Handling
Attachments decoded and accessible via API. Images, PDFs, and documents.
Full-Text Search
Search emails by sender, recipient, subject, body, date range, or metadata.
Multiple Inboxes
Create unlimited inboxes per organization. Complete isolation between inboxes.
Custom Domains
Use your own domains. SPF, DKIM, and DMARC configuration handled automatically.
SDKs & Libraries
Official SDKs for Node.js, Python, and more. Type-safe and idiomatic.
Open Source
MIT licensed. Self-host or use our managed cloud. Full transparency.
Ready to give your AI agent email superpowers?
Join developers building the next generation of AI-powered products. Start sending and receiving emails in minutes.