Take Control of Your Enterprise Email.
Zimbra Profelis Edition combines open-source Zimbra infrastructure with enterprise features, security enhancements, and local operational support provided by Profelis. Email, calendars, contacts, and collaboration tools come together on a single platform.
It offers a Microsoft Exchange alternative that meets your organization's data, security, and management requirements while preserving familiar user workflows.
Under Your Organization's Control.
Outlook, mobile email and calendar compatibility.
Your data stays within the infrastructure chosen by your organization.
DLP, WAF, authentication and control.
Development, operation and 24/7 support.
Single Sign-On (SAML 2.0)
Users sign in once using their organization's identity system. A connection wizard and Single Logout (SLO) support are provided for Microsoft ADFS and other SAML 2.0 identity providers.
- Separate identity provider per domain name; account matching with email, UPN, or custom attribute.
- Live connection test; signature, duration, and account matching checks.
- Encrypted assertion support; rejection of invalid and repeated responses.
SAML features apply to Zimbra 10-based installations.
Passwordless Login (Passkey / FIDO2)
Log in to the web client using a fingerprint, facial recognition, or device PIN. The institution sets its own authentication policy:
- Passkey Only
- Passkey or password + one-time code (TOTP).
- Maintain the current login method.
Safety Included with the Product
Web Application Firewall (WAF)
Request rules, access to the administration interface, and login rate limits can be managed from the console.
Server Integrity Monitoring
Unexpected file changes and webshells are detected and quarantined.
Compromised Account Audit
Suspicious forwarding settings, modified reply-to addresses, and hidden deletion rules can be viewed and removed.
Profelis also maintains additional security patches for Zimbra.
Data Loss Prevention (DLP) and Privacy Labels
DLP
Emails containing Turkish national ID numbers, IBANs, or payment card information can be blocked, quarantined, or reported according to defined rules.
Privacy labels
Labels such as "Official Use Only" and "Personal Data" are added to Outlook-compatible email headers and audit logs.
OpenPGP
End-to-end email encryption and digital signature.
400-Day User Activity Audit Log
Email sending and deletion activities can be searched and exported as CSV files.
These features support recordkeeping and classification efforts in KVKK and public institutions' information security audits.
Backup, Archive and Storage Management
Backup
Scheduled full and differential backups; restore based on account or user.
Archive and e-discovery
Archive incoming and outgoing emails and search them when needed.
HSM
Automatically move older emails to more cost-effective storage.
Quota Management
Centralized storage usage dashboard, bulk quota assignment, and alerts.
Mobile Device Management and Message Recall
ActiveSync: Synchronization with built-in iPhone and Android apps. Administrators can view connected devices, manage access, and issue remote wipe commands.
Recall: Emails accidentally sent to internal recipients can be recalled, and Outlook recall requests are supported. This does not apply to emails sent outside the organization.
Active Directory Integration and Simplified Administration
- User and distribution list synchronization from Active Directory, with dry-run mode and change reports.
- Department-Specific Address Books (GAL).
- Distribution list sending and viewing permissions.
- Delegated administrators with restricted permissions using predefined templates.
Migrating from Microsoft Exchange to Zimbra Profelis Edition
Zimbra Profelis Edition runs on Ubuntu Linux in your organization's own data center without requiring per-user CAL licenses. It includes an Outlook connector, ActiveSync, backup, and WAF capabilities.
During migration, mailboxes, calendars, and contacts can be transferred in the background. Profelis provides 24/7 support in Türkiye at both the source code and operating system levels.
Frequently Asked Questions
What is Zimbra Profelis Edition?
Zimbra Profelis Edition is an enterprise email and collaboration platform developed by Profelis based on open-source Zimbra 10.
Can it be used instead of Microsoft Exchange?
Yes. Zimbra Profelis Edition supports Outlook and built-in mobile email applications, while migration tools enable the transfer of existing emails, calendars, and contacts.
Does it work with Outlook?
Yes. With the Outlook connector and ActiveSync, email, calendar, and contacts can be synchronized.
Is single sign-on supported with ADFS?
Yes. In Zimbra 10-based installations, it works with SAML 2.0, ADFS, and other compatible identity providers.
Does Zimbra Profelis Edition support passwordless authentication?
Yes. Passkey (FIDO2) is supported in the web client; the login method is selected according to the institution's policy.
Do I need a separate product for backup?
No. Scheduled backup and account-based restore come with the product.
Where is our data stored?
Your data is stored in your organization's own data center or a hosting environment in Türkiye selected by your organization.
Is it suitable for public institutions?
In-house setup, DLP, recording, and security features support information security auditing efforts.
What is the licensing model?
No per-user CAL licenses are required. Contact Profelis for details about subscription and support options.
Latest Update:October 2026
Feature comparison
Select the category you want to compare and review the features between the versions.
Key Features
| Key Features | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| ✓ | ✓ | ✓ | ✓ | |
| Calendar | ✓ | ✓ | ✓ | ✓ |
| Address Book and Contacts | ✓ | ✓ | ✓ | ✓ |
| Tasks | ✓ | ✓ | ✓ | ✓ |
| Web Client | ✓ | ✓ | ✓ | ✓ |
| Desktop Offline Client | ✓ | ✓ | ✓ | ✓ |
| Mobile Access | ✓ | ✓ | ✓ | ✓ |
| Document Storage and Sharing | ✓ | ✓ | ✓ | — |
Client Support
| Client Support | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| Rich Web Client with Multi-Browser Support | ✓ | ✓ | ✓ | ✓ |
| Multi-Language Web Client Support | ✓ | ✓ | ✓ | ✓ |
| Native Desktop Client | ✓ | ✓ | ✓ | ✓ |
| ActiveSync Support | — | ✓ | ✓ | ✓ |
| POP and IMAP Email | ✓ | ✓ | ✓ | ✓ |
| iPhone, Android and Windows Phone Support | ✓ | ✓ | ✓ | ✓ |
| Mobile Web Browser | ✓ | ✓ | ✓ | ✓ |
| CalDAV and CardDAV Clients | ✓ | ✓ | ✓ | — |
| MS Outlook Connector | — | ✓ | ✓ | ✓ |
Messaging
| Messaging | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| Folder Organization | ✓ | ✓ | ✓ | ✓ |
| Search Folders | ✓ | ✓ | ✓ | ✓ |
| Flags and Customer Tags | ✓ | ✓ | ✓ | ✓ |
| Email Rules (Filters) | ✓ | ✓ | ✓ | ✓ |
| Built-in and External Out-of-Office Auto Replies | ✓ | ✓ | ✓ | ✓ |
| Read Receipt | ✓ | ✓ | ✓ | ✓ |
| Auto-Complete from Local and GAL (Global Address List) | ✓ | ✓ | ✓ | ✓ |
| Advanced Search Criteria Including Attachments | ✓ | ✓ | ✓ | ✓ |
| Message Recall | — | ✓ | — | ✓ |
| Undo Send Delay | — | ✓ | ✓ | ✓ |
| Recover Deleted Emails | — | ✓ | ✓ | ✓ |
| Automatic Legal Disclaimer | ✓ | ✓ | ✓ | ✓ |
| Out-of-Office Warning While Composing an Email | — | ✓ | — | ✓ (MailTips) |
| Quick Filters for Unread and Flagged Messages | — | ✓ | — | ✓ |
Mobile Usage
| Mobile Usage | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| Exchange ActiveSync for iOS, Android and Windows | — | ✓ | ✓ | ✓ |
| BlackBerry Enterprise Server Support | — | — | ✓ | ✓ |
| AutoDiscover Service | — | ✓ | ✓ | ✓ |
| Server-Side Search | ✓ | ✓ | ✓ | ✓ |
| Remote Wipe | ✓ | ✓ | ✓ | ✓ |
| Device Encryption and Mandatory PIN Code | — | — | ✓ | ✓ |
| CalDAV and CardDAV for iPhone | ✓ | ✓ | ✓ | — |
| Synchronizing Shared Folders with ActiveSync | — | ✓ | ✓ | — |
| Corporate Mobile Device Management | — | ✓ | ✓ | ✓ |
Collaboration
| Collaboration | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| Delegation and Sharing (Calendars, Contacts, and Tasks) | ✓ | ✓ | ✓ | ✓ |
| Shared Mailboxes | — | ✓ | ✓ | — |
| "Send on Behalf" and "Send As" Delegation | — | ✓ | ✓ | ✓ |
| Calendar Sharing and Group Calendars | ✓ | ✓ | ✓ | ✓ |
| Distribution Lists and Groups | ✓ | ✓ | ✓ | ✓ |
| Meeting Participants and Responses | ✓ | ✓ | ✓ | ✓ |
| Availability Reporting and Scheduling Suggestions | ✓ | ✓ | ✓ | ✓ |
| Resource Planning | ✓ | ✓ | ✓ | ✓ |
| External Sharing and Collaboration | ✓ | ✓ | ✓ | — |
| Document Sharing and Collaboration | ✓ | ✓ | ✓ | — |
| Task Assignment | ✓ | ✓ | ✓ | ✓ |
| Distribution list sending permissions (who can send, who can see members) | — | ✓ | ✓ | ✓ |
| Share inventory for users and administrators (who has shared what to whom) | — | ✓ | — | — |
| Nextcloud integration (save to external cloud, add sharing link) | — | ✓ | ✓ | — |
| Department-Specific Address Books (GAL) | — | ✓ | — | ✓ (Address book policies) |
Spam and Virus Protection
| Spam and Virus Protection | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| Built-in Anti-Spam and Anti-Virus | ✓ | ✓ | ✓ | ✓ |
| DKIM | ✓ | ✓ | ✓ | ✓ |
| SPF Support | ✓ | ✓ | ✓ | ✓ |
| Tarpitting | ✓ | ✓ | ✓ | ✓ |
| Real-Time Blacklists | ✓ | ✓ | ✓ | ✓ |
| Rate Limiting | ✓ | ✓ | ✓ | ✓ |
| Postscreen | ✓ | ✓ | ✓ | — |
| Greylisting | ✓ | ✓ | ✓ | — |
Security
| Security | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| SSL Certificate Management | ✓ | ✓ | ✓ | ✓ |
| S/MIME Digital Signatures and Encryption | ✓ | ✓ | ✓ | ✓ |
| Role-Based Access Control | — | ✓ | ✓ | ✓ |
| Blocked Attachment File Types | ✓ | ✓ | ✓ | ✓ |
| Trusted IPs and Hosts | ✓ | ✓ | ✓ | ✓ |
| Multi-Layered Architecture | ✓ | ✓ | ✓ | ✓ |
| Two-Factor Authentication in the Web Interface | — | ✓ | ✓ | — |
| Built-in Two-Factor Authentication | — | ✓ | ✓ | — |
| Built-in DLP | — | ✓ | — | ✓ |
| Passwordless login (Passkey / FIDO2) | — | ✓ | — | — |
| Single sign-on: SAML 2.0 (ADFS), single sign-out | — | ✓ | ✓ | ✓ |
| Built-in Web Application Firewall (WAF): Request, SOAP, and Rate-Limiting Rules | — | ✓ | — | — |
| Server integrity monitoring and webshell quarantine | — | ✓ | — | — |
| Compromised Account Audit (External Forwarding, Reply-To Address, Hidden Rules) | — | ✓ | — | — |
| OpenPGP end-to-end encryption and signing | — | ✓ | — | — |
| Privacy labels (compatible with Outlook labels) | — | ✓ | — | ✓ |
| User Activity Audit Log (Sending, Deleting; 400 Days) | — | ✓ | ✓ | ✓ |
| Additional patch set for Zimbra security vulnerabilities | — | ✓ | — | — |
Administration
| Administration | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| Integrated Web Management Console | ✓ | ✓ | ✓ | ✓ |
| Command Line Script Support | ✓ | ✓ | ✓ | ✓ |
| Single Sign-on (Kerberos/SAML) | — | ✓ | ✓ | ✓ |
| Active Directory Authentication | ✓ | ✓ | ✓ | ✓ |
| SambaBox Authentication | ✓ | ✓ | ✓ | — |
| Apache DS Authentication | ✓ | ✓ | ✓ | — |
| Application Programming Interface | ✓ | ✓ | ✓ | ✓ |
| Archiving, Retention, Legal Hold and eDiscovery | — | ✓ | ✓ | ✓ |
| Single Instance Storage | ✓ | ✓ | ✓ | — |
| Object Storage Support (AWS S3 and S3 Compatible Interfaces) | ✓ | ✓ | ✓ | — |
| Built-in Backup Tools | — | ✓ | ✓ | — |
| JBOD Support | — | — | — | ✓ |
| User-Based Backup | — | ✓ | ✓ | — |
| Database-Based Email Quota Management | — | ✓ | ✓ | ✓ |
| Child Mailboxes | ✓ | ✓ | ✓ | ✓ |
| SAML connection wizard, live testing and event logging | — | ✓ | ✓ | — |
| Active Directory → Zimbra Account and List Synchronization (Dry-Run Mode, Report) | — | ✓ | — | — |
| Quota Management Dashboard, Bulk Assignment, and Email Alerts | — | ✓ | ✓ | — |
| Storage Tiering (HSM): Moving Older Data to Cost-Effective Storage | — | ✓ | ✓ | — |
| Moving the mailbox between servers | — | ✓ | ✓ | ✓ |
| Delegated Administrator with Predefined Permission Templates | — | ✓ | ✓ | ✓ |
| SSL/TLS certificate panel | ✓ | ✓ | ✓ | ✓ |
Platform
| Platform | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| Flexible Deployment Options (On-Premises and Cloud) | ✓ | ✓ | ✓ | ✓ |
| Multiple Domain Name, Multi-Tenant Architecture | ✓ | ✓ | ✓ | ✓ |
| High Scalability | ✓ | ✓ | ✓ | ✓ |
| Support for Subscription-Based and Free Linux Distributions | ✓ | ✓ | ✓ | — |
| Open Source Core Code | ✓ | ✓ | ✓ | — |
| Simple Per-Mailbox Licensing Model | — | — | ✓ | — |
| Extensive Web Interface Customization | — | ✓ | ✓ | — |
| Operation on Windows Server Operating System | — | — | — | ✓ |
| Operation on Major GNU/Linux Distributions | ✓ | ✓ | ✓ | — |
| One-command installation package (Zimbra 10.1, Ubuntu 22.04 / 24.04) | — | ✓ | — | — |
| The user chooses their own color palette | — | ✓ | — | ✓ |
| Development and Source-Code-Level Support in Türkiye | — | ✓ | — | — |
Enterprise Features
| Enterprise Features | Zimbra Open Source Edition | Zimbra Profelis Edition | Zimbra Professional Edition | Microsoft Exchange |
|---|---|---|---|---|
| 24/7 Support and Intervention at Source Code Level | — | ✓ | — | — |
| 24/7 Support and Intervention at Operating System Level | — | ✓ | — | — |
| Performance Optimization at Linux Kernel Level | — | ✓ | — | — |
| Directory-Integrated User Management System | — | ✓ | — | ✓ |
| Directory-Integrated Distribution List Management System | — | ✓ | ✓ | — |
| Directory-Integrated Quota Management System | — | ✓ | — | ✓ |
| Active/Passive High Availability Cluster (HA Cluster) | — | ✓ | — | ✓ |
| Distributed Disaster Recovery Architecture for Continuity | — | ✓ | — | — |
| Corporate Identity Customizations in Webmail Interface | — | ✓ | ✓ | ✓ |
| GAL (Global Address List) Support for Users Connected via ActiveSync | — | ✓ | — | ✓ |
| OTP (One-Time Password) Support, Regardless of Number of Users | — | ✓ | ✓ | ✓ |
| Secure Self-Service Password Reset, Regardless of Number of Users | — | ✓ | — | — |
| Hosting More Than 50,000 Users on a Single Server | — | ✓ | — | — |
