With a new interface and newly designed helpers, you have instant access to all your data. Search through thousands of emails, attachments, and files instantly — without heavy data downloads or server load. Share and edit documents — like never before.
Welcome to the CGatePro.net website of Stalker Software GmbH, CommuniGate Pro distributor since 1992 and part of the CommuniGate Stalker vendor group till 2019.
The Stalker Software GmbH sells CommuniGate Pro since 1992, is authorized distributor for licenses for 6.3, 6.4 and 6.5 versions.
We are now actively developing around CommuniGate Pro. Try our new drift interface and the CommuniGate Pro Server helpers that leverage the interface's capabilities to a new level.
A complete collaboration platform with tightly integrated modules, all communicating through the real-time XIMSS protocol.
Conversation threads, rich HTML composer, multi-mailbox search, attachment search, labels, flags, and print/PDF export.
Event management with month, week, and day views. Recurring events, attendee management, invitations, and shared calendars.
Business card view, contact groups, domain directory, CSV import/export, vCard support, and presence indicators.
Full file manager with drag-and-drop, document editing via Collabora Online, file sharing with ACL, and templates.
Task management with priorities, due dates, progress tracking, sharing, and iCalendar (vTodo) support.
Quick note-taking with folder organization, real-time sync, search, and collaboration through shared notebooks.
Instant messaging with XMPP, buddy lists, presence indicators, typing notifications, and chat history.
Edit Office documents in-browser via Collabora Online. Word, Excel, PowerPoint — real-time co-editing with WOPI integration.
Import PFX/P12 certificates, sign and encrypt outgoing emails, unlock private keys per session. Full certificate management built in.
Enterprise-grade architecture with IP protection, offline support, and native desktop performance.
Server-side helper services that extend CommuniGate Pro with advanced indexing, sharing, and third-party integrations.
Collabora™ and Zoom™ are trademarks of their respective owners. We do not license or resell these products.
Full implementation of CommuniGate Pro's XML Interface for Messaging, Scheduling, and Signaling. 31 protocol modules, instant push updates.
Encrypted local caching with configurable sync scope. WASM-based in-memory indexing for instant search without server round-trips.
Server-side plugins and tools for CommuniGate Pro administration, security, and compliance.
The same powerful web client, wrapped in a native desktop shell. Available for Windows, Linux, and macOS. Persistent credential storage, offline access, and direct file system integration.
.NET 8 WebView2 (Windows), Tauri/WebKitGTK (Linux), and Tauri/WebKit (macOS). Self-contained, no runtime dependencies.
DPAPI-encrypted password storage on Windows. Remember per session or permanently.
Encrypted file-based cache with configurable sync. Access emails, contacts, and calendar offline.
drift Desktop
Beta 1.5 — Now Available
Windows, Linux & macOS
drift-all Beta 1.9 NEW
Multi-account IMAP + cross-platform desktop client
File synchronization for CommuniGate Pro. Sync your CGP file storage to a local folder, share files with public links, and manage access control — all from Windows Explorer.
Files sync automatically between your local folder and CGP. Copy a file in — it uploads within seconds. Changes on the server pull down instantly.
Right-click any file → "Share via CGP..." to manage access control (read, read/write, admin) or generate a public link with one click.
Single 5.5MB executable, compiled native Rust binary. No installer needed — just run it.
Lives in your system tray with live sync status, progress popup, and recent activity. Native login dialog with saved credentials and autostart.
CGP Drive
Beta 0.9 — Windows & macOS
Single executable • No dependencies
Flexible licensing for organizations of any size. All tiers include email, calendaring, instant messaging, and collaboration.
| Feature |
SMB
25 – 1,000 accounts
|
Telco / Provider
1,000 – 10,000 accounts
|
Enterprise+
10,000+ accounts
|
|---|---|---|---|
| Email (IMAP, POP, SMTP) | |||
| Groupware (Calendar, Contacts, Tasks) | optional | ||
| MAPI / Outlook Connector | optional | ||
| ActiveSync (Mobile Devices) | optional | optional | |
| VoIP / SIP Telephony | optional | optional | |
| Dynamic Cluster / HA | optional | optional | optional |
| drift Web & Desktop App | optional | optional | optional |
| CGP Helpers (Search, Files, Sharing) | optional | optional | optional |
All tiers include XIMSS, LDAP, S/MIME, file storage, and Collabora document editing.
Estimate the infrastructure you need for your deployment
Percentage of total users
Estimates based on typical workloads. Actual requirements may vary.
High-performance native helper applications that run on the CommuniGate Pro server. Built in Rust for Windows and Linux. No runtime dependencies.
Full-text search indexing for email and contacts. Builds per-account SQLite FTS4 databases for instant search across thousands of messages.
Full-text search indexing for user file storage. Indexes file metadata, ACLs, and extracted document content for instant file search.
Unified API for managing mailbox sharing, file sharing, subscriptions, and Send-As delegation via XIMSS CLI commands.
Email header rewriting filter that removes CommuniGate Pro branding from outgoing messages. Persistent CGP content filter protocol.
All four helpers work without a license key in demo mode — limited to 5 accounts and 1 domain. All features are fully enabled. This is sufficient for evaluation and small installations. For production use, a license key unlocks configurable account/domain limits and domain binding.
Inside your CGP base directory, create a subdirectory for each helper under Helpers/. Place the binary and .cfg file in each.
mmindex.cfg
Email & contacts search indexing. XIMSS credentials optional (needed for live indexing and domain verification).
# CGP base directory (auto-detected if omitted)
# Windows: C:\CommuniGate Files Linux: /var/CommuniGate
basedir=C:\CommuniGate Files
# XIMSS connection (optional — enables live indexing + domain verification)
server=127.0.0.1
port=11024
[email protected]
password=YourPassword
# Domains to index (* = all, or comma-separated: example.com,other.com)
domains=*
# Index storage path (relative to each account directory)
indexdir=account.web/private/index
# Log level: 0=none, 1=error, 2=warn, 3=info, 4=debug
loglevel=3
# Keyword extraction: on = deduplicate + remove stop words, off = raw text
keywords=on
# Stop word languages: all = 57 languages, or ISO codes: en,de,fr
keywords_languages=all
# Live indexing: off, ximss, file, both (requires XIMSS credentials)
liveindex=ximss
# Debounce delay in seconds for live changes (default: 2)
liveindex_debounce=2
# Periodic full re-index interval in seconds (0=disabled, 3600=hourly)
indexperiod=0
# Batch size for DB operations (default: 100)
batchsize=100
# Mailboxes to skip (comma-separated wildcard patterns)
ignoremailboxlist=Spam*,Junk*,Calendar*,Contacts*,Tasks*,Notes*,Drafts
files-index-helper.cfg
File storage search indexing. No XIMSS needed — reads files directly from disk.
# CGP base directory
basedir=C:\CommuniGate Files
# Domains to index (* = all)
domains=*
# Index storage path (relative to each account directory)
indexdir=account.web/private/index
# Log level: 0=none, 1=error, 2=warn, 3=info, 4=debug
loglevel=3
# Content extraction from documents: on/off
keywords=on
access-rights-helper.cfg
Sharing & ACL management. Requires postmaster XIMSS credentials (all operations use CLI commands).
# XIMSS connection (required)
server=127.0.0.1
port=11024
[email protected]
password=YourPassword
# Log level: 0=none, 1=error, 2=warn, 3=info, 4=debug
loglevel=3
whitelabel-filter.cfg
Email header rewriting. No XIMSS needed. Set modify_files=false first to test in dry-run mode.
# Brand name replaces "(CommuniGate Pro SMTP 6.x)" in Received headers
brand_name=SMTP
# Message-ID prefix replaces "ximss-" (e.g. <msg-12345@domain>)
messageid_prefix=msg-
# X-Mailer replacement (empty = strip the header entirely)
xmailer_replacement=
# Rewrite queue files: true = modify, false = dry run (log only)
modify_files=true
# Headers to strip entirely (comma-separated, case-insensitive prefix match)
strip_headers=X-TFF-CGPSA,X-ExtScanner,X-AttachExt,X-MIME-Autoconverted
# Hostname replacement map: old:new pairs (comma-separated)
# Replaces internal hostnames across ALL header values
hostname_map=
# CGP base directory (resolves relative queue file paths)
# Windows: C:\CommuniGate Files Linux: /var/CommuniGate
cgp_base_dir=C:\CommuniGate Files
# Log level: 0=none, 1=error, 2=warn, 3=info, 4=debug
log_level=3
Go to Settings → General → Helpers. Add mmindex-helper, files-index-helper, and access-rights-helper as External App Helpers. Add whitelabel-filter as an External Filter. Set RestartPause to 30s.
Place license.key in each helper's directory to unlock production account and domain limits.
What's new in each release.
Try the full webmail client right now. No installation required — just log in and explore all modules.
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