A clean REST API that gets out of your way. Verify your domain, grab an API key, and start sending in minutes.
import { Eusend } from '@eusend_dev/sdk' const client = new Eusend('eu_live_...') const { data, error } = await client.emails.send({ from: 'hello@yourdomain.com', to: 'customer@example.com', subject: 'Your order is confirmed', html: '<p>Thanks for your order!</p>', }) console.log(data?.id) // em_...
Delivery events — sent, delivered, bounced, complained — pushed to your webhooks. Opens and clicks tracked and charted in your dashboard.
Write templates as React components — no HTML tables, no quirks. The SDK renders them to email-ready HTML before sending, so the JSX never travels over the wire. See the code and the result, side by side.
import { Html, Body, Container, Heading, Text, Button } from '@react-email/components' export default function Welcome({ name }: { name: string }) { return ( <Html> <Body style={{ background: '#14161b' }}> <Container> <Heading>Welcome to Acme, {name}</Heading> <Text> Thanks for signing up. Verify your email and you're ready to start sending. </Text> <Button href="https://acme.eu/verify"> Verify email </Button> </Container> </Body> </Html> ) }
Deliverability isn’t an add-on. Domain authentication, encrypted transport, and automatic suppression are built into every send — on mail infrastructure we run ourselves in the EU, not a third-party relay.
Domain authentication
We generate a unique DKIM key for each domain and give you the exact SPF, DKIM, and DMARC records to add — so mailbox providers trust your domain.
Encrypted transport
Outbound mail is sent over TLS and honors recipients’ published MTA-STS and DANE policies, validating certificates when STARTTLS is offered.
Automatic suppression
Hard bounces and spam complaints are added to your suppression list automatically — you never send to a known-bad address again.
One-click unsubscribe
Broadcasts include a visible unsubscribe footer and RFC 8058 List-Unsubscribe headers — the one-click button Gmail and Yahoo require from bulk senders. Opt-outs are excluded from future broadcasts.
Delivery webhooks
Subscribe to email events — sent, delivered, bounced, and complained — delivered to your endpoint with automatic retries.
Our own mail servers
We run our own mail servers in EU data centres — your mail isn’t resold through a shared third-party relay. We control the sending IPs and reputation end to end, and nothing leaves European borders.
Every email you send is processed on EU infrastructure we run ourselves — our own mail servers, API, and database, all in German data centres. Recipients, message content, and delivery events are stored exclusively in the EU. See exactly who processes what.
Data residency
European Union
Sending region
Falkenstein
API hosting
Nuremberg
Database
Frankfurt
Set up your domain, grab an API key, and send your first email in under 5 minutes.