The Zimbra alternative for organisations that keep email on their own servers
XgenPlus Enterprise is an on-premise email and collaboration platform from Data Xgen Technologies, Jaipur, that replaces Zimbra in government, PSU and BFSI deployments. It ships with a built-in certificate authority, archiving, litigation hold and eDiscovery, LDAP and Active Directory integration, chat, meetings and Xgen Office, and email addresses in Indian scripts. Security fixes come from the vendor that wrote the code, and the XgenPlus team migrates Zimbra mailboxes. References include Air India, BSNL, HAL and NIXI.
- Installs on your hardware or private cloud
- Certificate authority, archiving, eDiscovery, AD included
- Patched and supported by the vendor, from India
- Zimbra mailboxes migrated by the XgenPlus team
On-premise XgenPlus Enterprise is quoted per deployment by mailbox count.
Why Zimbra sites are looking for a way out
Two exploited vulnerabilities in fourteen months
CVE-2025-27915 was exploited in the wild in 2025, and CVE-2026-73570 was added to the CISA Known Exploited Vulnerabilities catalogue in August 2026. Every internet-facing Zimbra server that has not been patched is exposed to the same exploits. XgenPlus issues fixes for its own code base and applies them for on-premise customers under support.
The free edition is gone and the upgrade is paid
Zimbra Open Source Edition was discontinued and the Zextras Suite reached end of life in July 2025. The supported route is a paid Network Edition licence on release 10.1 or later. Sites on older releases receive no fixes. XgenPlus Enterprise is one licence per mailbox with support included.
Chat, meetings, office and a certificate authority are add-ons or absent
XgenPlus Enterprise includes chat, audio and video meetings, Xgen Office, a certificate authority with CRL and OCSP for S/MIME, archiving and eDiscovery, and mailboxes on addresses in Indian scripts. Tender evaluators tick those rows without a third-party product.
Sources: CISA Known Exploited Vulnerabilities catalogue, CVE-2025-27915 and CVE-2026-73570 (added August 2026); Zextras end-of-life notice, July 2025; Zimbra licensing pages, checked August 2026. XgenPlus feature list from the Enterprise edition documentation.
XgenPlus and Zimbra prices, side by side
| Plan | Per user / month | Mailbox | Notes |
|---|---|---|---|
| XGEN StarterXgenPlus | ₹21 | 2 GB | 10 MB attachments |
| XGEN Starter ProXgenPlus | ₹31 | 5 GB | 20 MB attachments |
| XGEN PremiumXgenPlus | ₹50 | 10 GB | 25 MB attachments |
| XGEN AdvanceXgenPlus | ₹85 | 30 GB | 50 MB attachments |
| XGEN Advance ProXgenPlus | ₹111 | 50 GB | 100 MB attachments |
| XGEN EnterpriseXgenPlus | ₹167 | 100 GB | 100 MB attachments |
| Zimbra Network EditionZimbra | On request | Your servers | per-mailbox annual licence, release 10.1 and later |
On-premise XgenPlus Enterprise is quoted per deployment by mailbox count. Hosted XgenPlus plans are per user per month, billed annually, plus 18% GST, for offices that can use a hosted service. Every XgenPlus plan is on the pricing page.
XgenPlus and Zimbra, capability by capability
| Capability | XgenPlus | Zimbra |
|---|---|---|
| Email, contacts, calendar | ✓ | ✓ |
| Anti-spam and anti-virus | ✓ | ✓ |
| Two-factor authentication | From Starter Pro | ✓ |
| S/MIME encryption and signing | From Advance Pro | ✓ |
| Built-in certificate authority with CRL and OCSP | Enterprise, on-premise edition | ✗ |
| Archiving, litigation hold, eDiscovery | Enterprise, on-premise edition | Network Edition |
| LDAP and Active Directory | Enterprise, on-premise edition | ✓ |
| Chat | From Starter Pro | Add-on |
| Audio and video meetings | From Premium | Add-on |
| Docs, sheets, slides | Xgen Office online, from Starter Pro | ✗ |
| AI reply and compose | From Starter Pro | ✗ |
| Email addresses in Indian scripts (IDN) | ✓ | ✗ |
| HR and payroll integration | Enterprise, on request | ✗ |
| Vendor patches applied by the vendor for on-premise customers | ✓ | Customer applies patches |
| Built and supported from India | ✓ | ✗ |
XgenPlus plan availability as on the pricing page. Zimbra capabilities as published by the provider on the dates in the sources above; check its current plans before you decide.
Retiring a Zimbra deployment without a mail outage
- We audit the Zimbra installation: domains, mailbox sizes, distribution lists, LDAP or AD, archiving rules and the client mix.
- XgenPlus Enterprise is installed on your hardware or private cloud, and mailboxes are migrated in batches from Zimbra using its export tools and IMAP while Zimbra stays live.
- MX records switch to the XgenPlus hosts on the agreed evening. Users sign in with the same address, and the Zimbra hosts are shut down after your sign-off.
Migration is part of every on-premise Enterprise deployment and is done by the XgenPlus team.
Zimbra alternative: what people ask
Can XgenPlus be installed on our own servers?
Yes. XgenPlus Enterprise is deployed on your hardware or private cloud, with your storage, backups and access controls. A hosted edition exists for offices that prefer it.
Do you migrate Zimbra mailboxes?
Yes. Mail, folders, contacts and calendars are migrated in batches with Zimbra still running, and the switch is scheduled with your team.
Does it integrate with Active Directory?
Yes. LDAP and Active Directory are supported for authentication and the global address book.
We answer tenders. What can XgenPlus show?
Made in India origin from Data Xgen Technologies, Jaipur; on-premise deployment; a built-in certificate authority and S/MIME; archiving and eDiscovery; email addresses in Indian scripts; and existing government and PSU references. Ask for the bid pack.
Who applies security patches?
For on-premise customers under support, the XgenPlus team applies fixes to your deployment. Zimbra sites apply their own patches, which is where most exploited installations fall behind.
Is there a hosted option for smaller offices?
Yes. Hosted XgenPlus starts at ₹21 per user a month in Indian data centres, with the same admin experience.
Tell us about your Zimbra setup
A short note is enough. Someone from the XgenPlus team replies within one working day with a price for your team and a migration plan.
