low-latency transactional email API for Dutch startups and EU-hosted sending
Transactional email infrastructure hosted inside the EEA, on dedicated hardware in Germany. Built for EU GDPR and Dutch AVG legislation with transparent EUR billing.
Drop into your application in under 60 seconds
Native typed interfaces with zero unnecessary dependencies. Built for standard fetch and modern edge runtimes.
import { SadaSend } from 'sadasend';
// Accepted and queued on the call; sent from our EU host
const sadasend = new SadaSend(process.env.SADASEND_API_KEY!);
export async function sendDutchOrderConfirmation(user: { email: string; name: string }) {
const result = await sadasend.emails.send({
from: 'Ondersteuning <support@yourdomain.nl>',
to: user.email,
subject: 'Je bestelling is bevestigd',
html: `<p>Beste ${user.name}, bedankt voor je bestelling!</p>`,
tags: ['orders', 'nl-region']
});
console.log('Accepted, message id:', result.id);
return result;
}Accepted and queued on our EU host, with AVG/GDPR-aligned data handling.
Engineered for high deliverability and zero incident risk
Every layer from edge connection pooling to per-key rate limits is designed to keep critical transactional dispatches fast, reliable, and contained.
EU-Hosted, Inside the EEA
Mail to Dutch ISPs such as KPN, Ziggo and T-Mobile Thuis is sent from inside the EEA, SPF, DKIM and DMARC aligned on every message.
100% GDPR & Dutch AVG Compliance
Zero unauthorized data transfers outside the European Economic Area (EEA). Automated Data Processing Agreements (Verwerkersovereenkomst) available.
Transparent EUR Billing via Paddle
Pay in Euros with automated reverse-charge VAT compliance for registered Dutch B2B entities (BTW-nummer).
AI Agent Guardrails & Allowlists
Protect test environments from emailing real customers with domain allowlists, rate ceilings, and human approval queues.
Dutch ISP Inboxing Optimization
Pre-warmed deliverability pools maintain pristine sender reputation across KPN, Ziggo, XS4ALL, and Gmail inboxes.
6,000 Free Monthly Emails
Complete developer tier with custom .nl domain DKIM keys, delivery webhooks, and log telemetry included.
SadaSend vs US-Hosted Email Relays
Why Dutch engineering teams choose SadaSend European infrastructure over US providers with data residency concerns.
| Feature & Capability | SadaSend | US-Hosted Email Relays |
|---|---|---|
| Sending from inside the EEA | Routes via US East Coast servers | |
| Dutch AVG / GDPR Processing DPA | Standard US cloud terms only | |
| EUR Billing & Reverse-Charge BTW | USD pricing with foreign conversion fees | |
| AI Agent Safety Guardrails | ||
| low-latency Ingestion Latency | 100ms+ transatlantic delay | |
| Free Tier with Custom Domain | 6,000 sends forever | Limited trials only |
Start with 3,000 emails every month at zero cost
No artificial paywalls on security. Unlike legacy providers that reserve recipient allowlists or dedicated IP pools for high enterprise tiers, every SadaSend account receives full safety controls from day one.
Everything you need to know about transactional email API Netherlands
Clear, transparent answers on deliverability, API authentication, and rate limits.
Related developer guides and architectural tutorials
Explore step-by-step production implementation blueprints, benchmarks, and protocols.
REST API Reference & Endpoints
Complete REST API reference for sending emails, managing API keys, tracking delivery events, and configuring recipient allowlists with low latency.
SMTP relay & framework integrations
Connect existing applications, WordPress, Supabase, Laravel, Django, and Nodemailer to SadaSend via standard SMTP relay with zero code changes.
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