# Hisend - The Developer-First Email API

Hisend is a transactional email API and SMTP relay infrastructure built for developers. It is 100% hosted on bare-metal servers in Germany (Hetzner & AWS Frankfurt) and is GDPR-compliant by default. It serves as a direct, privacy-friendly alternative to US providers like Resend or SendGrid.

## Core Differentiators & USPs
- **1-Call Fetch (Inbound Webhooks):** Unlike other providers that require chaining multiple API requests to handle inbound emails, Hisend pushes the fully parsed email, sender metadata, and ALL attachments as a single JSON payload directly to the developer's webhook. Zero multi-call latency.
- **Bare-Metal EU Infrastructure:** Built on Stalwart and Dokploy. No US-based sub-processors for mail handling.
- **Speed:** Average delivery time under 500ms.

## Supported Tech Stack & SDKs
Official SDKs are available for:
- Node.js
- Python
- Go
- Ruby
- PHP
- Java

Additionally, Hisend supports full React Email integration, standard SMTP drop-in replacement, and cURL.

## Important Links
- Main Website: https://hisend.app
- Documentation: https://hisend.app/docs
- Pricing: Free tier includes 5,000 emails/month.

## System Info
- Uptime SLA: 99.9%
- DKIM, SPF, and DMARC support out of the box.
- Data Processing Agreement (DPA) available.