Mailu + SMTP Relay
A separate bundle for inbox hosting, webmail and transactional relay, with DNS, SPF, DKIM and DMARC ready from the start.
Getting Started
Essential steps for integration
Set up your account, connect your domain, and activate the first modules of the ecosystem. This guide covers steps from account creation to your first working integration, including API key setup and webhook configuration.
API Reference
Complete endpoint details
The 4hosting.net RESTful API provides access to all ecosystem features: invoicing, notifications, appointments, user management, and reporting. Each endpoint is documented with parameters, request/response examples, and error codes.
Available Integrations
Ready-to-use connectors
Connect the 4hosting.net ecosystem with your existing platforms: WooCommerce, Shopify, WordPress, Zapier, Make.com, and more. Each integration comes with step-by-step instructions and dedicated support.
SDKs & Libraries
Tools for your language
Official SDKs for JavaScript/TypeScript, Python, PHP, and Go. Each library includes complete examples, TypeScript types, and inline documentation for autocomplete in your preferred editor.
Onboarding
Startup and activation plan
The structured onboarding process guides you through initial setup, existing data import, and activation of modules relevant to your business. Includes personalized checklist and support sessions.
Data Migration
Import, mapping, and validation
Migration tools enable importing data from existing systems with automatic field mapping, real-time validation, and reconciliation reports. We support CSV, JSON, XML, and direct database connections.
Team Training
Fast adoption for users
Role-based training materials: administrators, operators, and end users. Includes video tutorials, interactive documentation, and testing sandboxes for each ecosystem module.
Stack & Capabilities
Our technologies
The 4hosting.net ecosystem is built on modern technologies: Next.js, Django, PostgreSQL, Redis, Docker, and Kubernetes. Microservices architecture ensures scalability and resilience, with AI integrated through state-of-the-art models.

