From €1.50 per mailbox per year. Mail, Groupware, Webmail & GoBD included.
Every Enterprise license includes nextxch Webmail PWA, CalDAV/CardDAV groupware, Admin & GoBD Cockpit with procedural docs export, OpenTelemetry, OCR & ZUGFeRD search, plus unlimited domains, tenants, mailing lists, aliases, and cluster nodes.
Up to 10 mailboxes free forever for staging domains, developers, and small teams with the full protocol & DAV stack and no expiry.
* Progressive bracket billing: e.g. 600 mailboxes pay Tier 1 (€1.50/mailbox/yr) on the first 499 and Tier 2 (€1.25/mailbox/yr) on the remaining 101. Only active user mailboxes count. Groups, domains, tenants, aliases, mailing lists, and cluster nodes are unlimited at €0. Prices exclude VAT.
Frequently Asked Licensing Questions
How does progressive tier billing work?
Identical to Stalwart's fair progressive model, at 25% to 28% lower rates: each bracket is billed at its own rate. For example, a 600-mailbox deployment pays Tier 1 (€1.50 per mailbox per year) on the first 499 mailboxes and Tier 2 (€1.25 per mailbox per year) on the remaining 101 mailboxes.
Do aliases, domains, tenants, or mailing lists count toward my mailbox total?
No. Only active user mailboxes are counted. Every license includes unlimited groups, unlimited client domains, unlimited tenants, unlimited aliases, unlimited mailing lists, and installation on an unlimited number of servers under your hostname domain.
Can I use nextxch with fewer than 25 mailboxes?
Yes! The Community & Starter Edition is free forever (€0) for up to 10 mailboxes. And our smallest Enterprise subscription (25 mailboxes) is just €37.50 per year total (approx. €3.13 per month), giving you full Enterprise features and room to grow.
From which tier is a binding SLA included?
Tiers 1 through 4 include standard engineering email support. Starting at Tier 5 (10,000+ licensed mailboxes), a binding Enterprise SLA with guaranteed response times directly from iqmeta GmbH in Germany and a Source-Code Escrow schedule are included at no extra charge (available below Tier 5 as an optional paid addendum).
What happens if my mailbox count grows mid-cycle or if I cancel?
Existing mail flow is never interrupted. You can add mailboxes mid-cycle with prorated billing and zero restart. If you cancel, the server cleanly reverts to Community mode with zero data loss.