Zextras Apply to the Partner Program

Move Beyond Legacy Collaboration

Struggling to Sell Zimbra?
Start Scaling with Carbonio.

Deliver a modern collaboration experience with a partner-first business model and seamless migration paths for your existing customers.

See why you can't keep relying on Zimbra

The Zimbra Reality

Six Reasons Selling Zimbra Is Getting Harder.

Zimbra still works. The question is whether it's the platform you bet your practice on for the next ten years.
For some partners, the answer is becoming clear.

Introducing Carbonio

Meet Carbonio — The All-In-One Private Digital Workplace.

Trusted by organizations that demand security, control, and digital sovereignty.
Built by Zextras — the European, privately owned vendor committed to a partner-exclusive model.

Under the hood

One unified platform. Not a stitched stack.

Carbonio runs as a coordinated service mesh — discovery, health checks, and dynamic scaling, all built in.

  • Fewer integration needs — less surface area to maintain, less to break.
  • Faster deployments — automation-ready architecture, designed to ship.
  • Built-in monitoring, reactive and predictive — Prometheus and Grafana integrated, not bolted on.
  • Open source down to the UI — real control over customizations
  • One support contract — instead of vendor sprawl across add-ons.
SERVICE MESH CARBONIO CORE Mail Calendar · Contacts Chat Group · 1:1 Meetings Video · Rooms Files Co-editing Mobile iOS · Android PLATFORM CHARACTERISTICS Multi-tenant · White-label · On-premises, partner-hosted, or hybrid
The Right Fit

Carbonio Is Built for Partners Like You.

✓
You run Zimbra deployments — or comparable open source workplace stacks — for customers who chose you for technical depth, not for hyperscaler convenience.
✓
Your customers ask sovereignty, jurisdiction, and compliance questions. You need sharper answers.
✓
You sell expertise and managed services. Thin reseller margins aren't your model.
✓
You need a platform you can commit to for the next decade — not the next two years.

Side-by-Side Comparison

Carbonio vs. Zimbra: Where the Differences Show.

The capabilities your customers ask about, side by side. See where Carbonio leads — and where Zimbra falls short.

20+ capabilities Carbonio offers that Zimbra doesn't
1 unified platform — chat, video, files, mobile,
co-editing included by default
0 add-on integrations to license, support, or stitch together
1

What you can sell

Capability Carbonio Zimbra
Native chat, video, files, co-editing ✓All four, native ✗LimitedFiles (Drive / Briefcase), co-editing (Zimbra Docs), and chat (from v10.1) are native; video via integrations.
iOS and Android apps ✓Full collaboration scope, multi-identity ✗LimitedNo chat / video / files apps
External meeting links, waiting rooms, moderation ✓Yes ✗No
Persistent and on-demand meeting rooms with scheduling ✓Yes ✗No
Multiple meeting moderators ✓Yes ✗No
White-label and multi-tenancy ✓MSP-native, turnkey ✗LimitedPossible but requires manual per-domain configuration; not MSP-purpose-built.
2

What you have to support

Capability Carbonio Zimbra
Per-user active mail replica ✓Granular per-user replication ✗PartialMulti-node and backup only — no per-user active replica
Infrastructure and version-agnostic restore ✓Yes ✗No
3

What you can defend in compliance conversations

Capability Carbonio Zimbra
2FA on web and mobile clients ✓Yes ✗Limited — partial web client coverage, no mobile
2FA QR code support for mobile apps ✓Yes ✗No
Per-tenant choice of identity provider (Okta, JumpCloud, SimpleSAML, etc.) ✓Yes ✗No — single IdP across the entire infrastructure
Access restriction via trusted/office networks ✓Yes ✗No
European ownership ✓Privately owned, European ✗Depends on current vendor situation

Stitching chat and video alongside Zimbra cost us deals to customers who wanted everything in one place. Moving to Carbonio meant one platform, one contract, and a sales conversation that finally matched what buyers were actually asking for.

— Technical Director, mid-market MSP

Migration Without Disruption

Migrate Existing Zimbra Customers to Carbonio Seamlessly.

Parallel-environment cutover, designed for business continuity.
Deployment size Engagement shape
Under 1,000 mailboxes Defined short-cycle engagement
1,000 – 10,000 mailboxes Structured multi-phase project
10,000+ mailboxes Planned program with staged cutover

Migration is billable. And it grows the practice.

Migration projects are revenue-generating engagements that shorten sales cycles and expand your services book.

We expected the move to Carbonio to be the hardest part. It became the most structured billable engagement we'd run in years — and the customers who came across thanked us for it.

— Operations Lead, EU-based MSP
See why partners are choosing Carbonio

Our Partner Commitment

Carbonio Is Built Around an Exclusive Partner Ecosystem.

What sold us on Carbonio wasn't the comparison sheet. It was that Zextras has no direct team competing with us, and no SaaS that lets customers go around us. That's the conversation we needed to have.

— Managing Director, MSP serving regulated verticals
Meet the vendor behind the platform

Why Trust Us

Zextras Is the Partner-First Vendor Behind Carbonio.

FAQs

Common Questions From Partners Like You.

Zimbra still works — why change?

It does. The question is whether the platform direction is something you want to bet your practice on for the next decade.

Is Carbonio just a newer version of Zimbra?

No. Carbonio is an independent platform built by Zextras with its own architecture and roadmap. Your team is productive on it quickly because it runs on the Linux foundations your engineers already know.

How disruptive is migration for our customers?

Parallel-environment cutover. Mailboxes, calendars, contacts, shared folders, distribution lists (where the chosen tooling path supports them), and most customizations migrate with tooling. End-user experience stays familiar.

Will my engineers need months of retraining?

If your team knows Linux workplace stacks, the curve is weeks. Training and certification are part of partner enablement.

How is Carbonio better for service providers specifically?

Native multi-tenancy. Service mesh architecture. Built for MSP service delivery, not retrofitted from single-tenant.

Is there a direct sales motion or SaaS tier I should worry about?

No. Sold exclusively through partners. No Zextras-hosted SaaS competing with your service delivery.

What's the cost picture for our customers?

Lower operational overhead, fewer integrations to license, single support contract. TCO consistently beats Zimbra-plus-add-ons — before factoring in services revenue.

Take the Next Step

Apply to the Zextras Partner Program.

Build your practice on a partner-first platform. The program is open to system integrators, MSPs, cloud hosters, value-added resellers, and IT consultancies serving compliance-driven and security-sensitive customers.