Platform & Architecture
Product Overview ESMTP, IMAP4rev2, JMAP, ActiveSync 16.1, Webmail & GoBD in one binary All 40+ Features v1.3.1 Dual-DKIM, SpamGuard, Encrypted File Share, OpenTelemetry, ZUGFeRD & OCR full-text search System Comparison Side-by-side matrix vs. Stalwart, Microsoft Exchange® & Postfix
Migration & Security
1-Click Migration Direct importer for Windows® hMailServer, Exchange® & live IMAP sync Security & Trust GoBD WORM, IDW PS 880 roadmap, release changelog & checksums
Try instantly in your browser: Explore the Admin Cockpit & Webmail live without signing up.
Live Demo Hub -> /admin/ /mail/
Setup & Reference
Guided Installation 8 Steps From fresh Windows .msi, Linux, or Docker host to verified mail flow Documentation Hub 14 Guides Structured manual in 5 categories: DNS, IPv6, TLS, SpamGuard & GoBD 19 Hoster & NAS Blueprints Docker® Compose, Windows® Service, Proxmox®, Synology®, Hetzner & netcup
Live Tools & Automation
DNS & Reverse DNS Advisor Live inspector & generator for MX, SPF, Dual-DKIM, DMARC & IPv4/IPv6 PTR CLI & API Object Schema (Reference) 12 Types All objects, JSON fields, enums, nextxch-cli & POST /api/v1/send Firewall & pfSense Troubleshooting Symptom playbooks for Port 25, Hairpin NAT, TLS certs & ActiveSync
Self-contained verified packages: 100% air-gapped ready · Windows .msi, Linux .deb/systemd & Docker.
SHA-256 Checksums ->
Live Demo Pricing Contact
DEEN
Start 30-day trial
Interactive Live Demo (Admin & Webmail)
Product & Architecture
Product Overview All 40+ Features System Comparison (Stalwart & Exchange®) 1-Click Migration (hMailServer & IMAP) Security, GoBD & Release History
Documentation & Tools
Guided Installation (8 Steps) Documentation Hub (14 Guides) 19 Hoster, NAS & Container Blueprints DNS & Reverse DNS Advisor nextxch-cli Command Reference API & CLI Object Schema (All Fields) API Keys & Send API (/api/v1/send)
Pricing & Licensing
Pricing, Calculator & Checkout 30-Day Trial & Contact
Start free 30-day trial Pricing & Calculator
Legal › Imprint / Legal Notice

Imprint / Legal Notice

Last updated: 1 November 2026 · Version 2.0 · iqmeta GmbH

← All legal documents
This English version is a convenience translation. In case of any discrepancy, the German version prevails.
Contents
  1. 1. Service provider
  2. 2. Contact
  3. 3. Commercial register & VAT
  4. 4. Professional liability insurance
  5. 5. Editorial responsibility & DSA contact
  6. 6. Dispute resolution
  7. 7. Liability for content and links
  8. 8. Copyright & trademarks

1. Service provider

iqmeta GmbH
Am Sonnenhang 24
71111 Waldenbuch
Germany

Represented by the Managing Director: Otto Neff

2. Contact

Email: support@nextxch.com
Security: security@nextxch.com
Web: https://nextxch.com

3. Commercial register & VAT

Register court: Amtsgericht Stuttgart (Local Court Stuttgart)
Register number: HRB 748338
VAT identification number pursuant to Section 27a UStG: DE 294776335
D-U-N-S number: 313087696

4. Professional liability insurance

Insurer: exali GmbH, Franz-Kobinger-Str. 9, 86157 Augsburg, Germany (exali.de/siegel/iqmeta). Type: IT professional and public liability insurance. Territorial scope: worldwide, with restrictions for the USA and Canada.

5. Editorial responsibility & DSA contact

Responsible for content pursuant to Section 18 (2) MStV: Otto Neff, address as above.

Single point of contact pursuant to Art. 11 and 12 of the Digital Services Act (EU) 2022/2065: support@nextxch.com. Languages: German and English.

6. Dispute resolution

Paid licenses and services are directed exclusively at businesses (B2B). The free Community Edition may also be used by consumers. We are neither willing nor obliged to participate in dispute resolution proceedings before a consumer arbitration board (Section 36 VSBG).

7. Liability for content and links

We compile the content of this website with great care but cannot guarantee that it is complete, accurate and up to date at all times. As a service provider we are responsible for our own content under general law (Section 7 DDG). We are not obliged to monitor transmitted or stored third-party information. Links to external websites are outside our control; the respective operator is responsible for their content. If we become aware of any infringement we will remove the content or link without delay.

8. Copyright & trademarks

Texts, graphics, screenshots and source code are protected by copyright of iqmeta GmbH. nextxch is a trademark of iqmeta GmbH. For third-party trademarks see Copyrights and Trademarks.

© iqmeta GmbH · Am Sonnenhang 24 · 71111 Waldenbuch · Germany · Back to Legal overview

Sovereign Mail & Groupware Server: mail, calendars, contacts and GoBD archive on your own infrastructure, for Docker® Compose, Windows Server® (no Docker®), Linux®, macOS®, NAS, and Kubernetes®. Engineered in Germany by iqmeta GmbH.

Made and hosted in Germany Made and hosted in Germany exali IT-Haftpflicht Siegel iqmeta GmbH IT Liability InsuredVerified Seal · iqmeta GmbH

Platform & Tools

  • Read-Only Live Demo (Admin & Webmail)
  • Installation Manual (8 Steps & Troubleshooting)
  • Admin Manual, Defaults & Best Practices
  • All Features & Screenshots
  • DNS / SPF / DKIM / rDNS Advisor
  • Docker® Compose & Windows® Service Guides
  • Compare with Stalwart & Exchange®
  • 1-Click hMailServer & IMAP Migration
  • Pricing & License Calculator

Trust, Security & Legal

  • Release History, Escrow & Audit Status
  • Security Policy (security.txt)
  • SHA-256 Release Checksums
  • support@nextxch.com
  • Vulnerability Disclosure

Legal

  • Legal & Compliance
  • Imprint
  • Terms and Conditions
  • Privacy Policy
  • Cookies Policy
  • License Agreement (EULA)
  • Data Processing Agreement
  • Third-Party Notices
© 2026 iqmeta GmbH · Am Sonnenhang 24, 71111 Waldenbuch, Germany. Microsoft®, Exchange®, Exchange Online®, ActiveSync®, Outlook®, Microsoft 365®, Windows®, and Windows Server® are registered trademarks of Microsoft Corporation; Apple®, iPhone®, iPad®, Mac®, iOS®, and macOS® are trademarks of Apple Inc.; Google®, Gmail™, and Android™ are trademarks of Google LLC; Thunderbird®, Docker®, Kubernetes®, PostgreSQL®, Linux®, Debian®, Ubuntu®, Proxmox®, Raspberry Pi®, Synology®, and Stripe® are trademarks of their respective owners. Third-party trademarks are referenced strictly to indicate technical interoperability; iqmeta GmbH is neither affiliated with nor endorsed, licensed, or certified by their respective owners.
Trust & Changelog Imprint Privacy Legal Third-Party Notices Sitemap