Transactional Email API
Email API, engineered in Europe.
Send transactional emails with a simple API. EU data residency, GDPR-native, built on Rust.
import { Postkit } from '@postkit/sdk';
const postkit = new Postkit('pk_live_...');
await postkit.emails.send({
from: 'hello@yourapp.eu',
to: 'user@example.com',
subject: 'Welcome aboard!',
html: '<h1>Welcome, {{name}}!</h1>'
});Everything you need
Powerful features, simple API
Email Sending
REST API and SMTP relay. Single or batch up to 100 emails. Scheduled delivery.
Templates
Handlebars-powered with variables. Draft/publish versioning.
Webhooks
Real-time events with HMAC-SHA256 signing. Exponential backoff retries.
Custom Domains
DKIM, SPF, DMARC verification. Automated DNS monitoring.
Inbound Email
Receive and parse incoming email. MIME parsing, S3 attachment storage.
Contacts & Audiences
Subscriber management, topic preferences, suppression lists.
Developer Experience
Send in any language
import { Postkit } from '@postkit/sdk';
const postkit = new Postkit('pk_live_...');
const email = await postkit.emails.send({
from: 'hello@yourapp.eu',
to: 'user@example.com',
subject: 'Welcome aboard!',
html: '<h1>Welcome!</h1>'
});
console.log(email.id); // em_abc123...Why Europe
Built where your data belongs
EU Data Residency
Hetzner Cloud, Vienna & Frankfurt. Your data never leaves the EU. No US cloud providers, no third-country transfers.
GDPR by Design
Opt-in tracking, DPA included, suppression management built-in. Compliance isn't an afterthought — it's the architecture.
Austrian Engineering
Rust backend, compile-time SQL, type-safe APIs. Precision meets developer experience. Built for reliability.
Pricing
Simple, transparent pricing
Start free, scale as you grow. No hidden fees, no overage surprises.
Free
For side projects and testing
- 100 emails / month
- 1 domain
- 5 templates
- 1 webhook endpoint
- Community support
Pro
For growing products
- 50,000 emails / month
- 10 domains
- Unlimited templates
- 10 webhook endpoints
- Email support
- €0.40 per 1,000 overage
Business
For production workloads
- 200,000 emails / month
- Unlimited domains
- Unlimited templates
- Unlimited webhooks
- Priority support + SLA
- €0.30 per 1,000 overage