# IceWarp — Business Instant Messaging

IceWarp by IceWarp Software Ltd. holds a panel rating of 2/5 from 6 AI judges (category median 2/5), as of 2026-11-03. Provenance: provenance unknown; sovereignty: not determined.

- Vendor: IceWarp Software Ltd. (https://icewarp.com)
- Category: [Business Instant Messaging](https://whats-best.ai/software/instant-messaging.md)
- Provenance (editorial classification): provenance unknown
- Canonical page: https://whats-best.ai/software/instant-messaging/icewarp
- Alternatives: https://whats-best.ai/software/instant-messaging/icewarp/alternatives ([markdown](https://whats-best.ai/software/instant-messaging/icewarp/alternatives.md))
- Data as of: 2026-11-04 · evaluated 2026-11-03 · oldest source captured 2026-11-03

**AI-generated.** Every score, rationale and verdict here is written by a panel of AI judges from public evidence — an analysis, not a hands-on test. Every fact quotes the vendor page it was read from. No score can be bought. How scores are made: https://whats-best.ai/methodology

## At a glance

- Vendor: IceWarp Software Ltd.
- Headquarters: Not stated on the vendor’s pages as of 3 Nov 2026
- Data hosting: Not stated on the vendor’s pages as of 3 Nov 2026
- Free plan: Not stated on the vendor’s pages as of 3 Nov 2026

## The panel's verdict

IceWarp sells an all-in-one suite — business email server, TeamChat, real-time document collaboration, video calls, ChatGPT integration — offered cloud or self-hosted, and the bench scores it highest where deployment control matters: deployment control runs 6 to 7, resting on a documented on-premises installation with MySQL/MariaDB or MS SQL support, backup, monitoring and a watchdog, and the vendor's written statement that in on-premises deployments it has no access to personal data at all. Weakest is the chat itself: messaging core sits at 2, because no captured page documents a channel model, threaded replies, mentions or search over message history. The genuine split is sovereignty, spanning 4 to 7: higher scores credit the published subprocessor list, with named US processors and stated transfer mechanisms, plus the self-hosted route; lower ones note that no captured page states where cloud message content is hosted and that "Made in the EU" is an origin slogan, not a residency statement. Encryption and access runs 3 to 4, governance and discovery 2 to 3, integrations 4 to 5; pricing transparency scores 0 to 1.

**Speaks for it:**
- Self-hosting is documented as a first-class option, with MySQL/MariaDB or MS SQL databases, automatic backup of settings, databases and mails, and server monitoring with a watchdog.
- The privacy policy states that for on-premises products the vendor has no access to personal data at all.
- A subprocessor list is published with names, locations and purposes — including US processors Amazon Web Services, Salesforce and ZenDesk — with adequacy decisions, SCCs and BCRs named as transfer mechanisms.
- Documented API modules cover Maintenance, Chat & Conferences, Mail and Cloud, alongside CalDAV, CardDAV and WebDAV support and a ChatGPT integration.
- TeamChat is a real module across web, desktop and mobile, with chat content stored in the groupware database.

**Held against it:**
- The captured pages never describe a channel model, threaded replies, mentions or search over message history, so whether an eighteen-month-old decision can be found again is unknown.
- The privacy policy promises encryption "whenever it's technically feasible"; we found no public information on encryption at rest for chat content, key handling or end-to-end encryption.
- The privacy policy fixes the vendor's own retention — up to sixteen years after contract termination for legal claims, ten for piracy protection — and we found no public information on customer-configurable retention, discovery export or an administrative audit trail.
- Inbound migration is documented via an IMAP/POP3 tool and downloadable migration tools; we found no public information on an export of chat history, files and channel structure out of the platform.
- Even on-premises, conference recordings are stored on the vendor's cloud and the Preview micro-service offloads processing there, and we found no public information on where cloud message content and metadata are hosted.

**Best for:**
- You want one self-hosted suite for email, TeamChat, files and conferencing, running on your own hardware against your own MySQL/MariaDB or MS SQL database.
- You need written custody language for on-premises use — the vendor states it has no access to personal data at all there.
- Your integration needs run on documented APIs and open protocols — CalDAV, CardDAV, WebDAV, Active Directory/LDAP — rather than webhooks and bots.

**Avoid if:**
- You need to prove that decisions from months back can be found again — ask the vendor: the public pages we read do not show it
- You must have documented encryption at rest or end-to-end encryption for chat content before signing.
- You need discovery export, legal hold or customer-configurable message retention for compliance work.
- You need a documented exit path that exports chat history and files out of the platform.

## Scores by judge and criterion

Scores out of 5, each judge scoring independently against the published rubric (v2). "n/r" = not rated: the vendor publishes no price, or the judge found no public information on that criterion.

| Criterion | The Team Lead | The Security Officer | The Works Council Advocate | The Compliance Counsel | The Platform Engineer | The Skeptic |
| --- | --- | --- | --- | --- | --- | --- |
| Channels, threads & search | 1/5 | 1/5 | 1/5 | 1/5 | 1/5 | 1/5 |
| Encryption & access control | 2/5 | 1.5/5 | 2/5 | 1.5/5 | 2/5 | 1.5/5 |
| Retention, discovery & co-determination | 1.5/5 | 1.5/5 | 1/5 | 1.5/5 | 1.5/5 | 1/5 |
| Deployment & data custody | 3.5/5 | 3.5/5 | 3.5/5 | 3/5 | 3.5/5 | 3.5/5 |
| Integrations & extensibility | 2/5 | 2/5 | 2/5 | 2/5 | 2.5/5 | 2/5 |
| European sovereignty | 3/5 | 3/5 | 2.5/5 | 2.5/5 | 3.5/5 | 2/5 |
| Pricing transparency | n/r | n/r | n/r | n/r | n/r | n/r |
| **Weighted verdict** | **2/5** | **2/5** | **2/5** | **2/5** | **2.5/5** | **2/5** |

### The judges

- **The Team Lead** (v1.0): Runs a distributed team and needs the tool people actually open. Wants threads that stay readable, search that finds last spring's decision, and channels that can be tidied without losing history. Unmoved by feature lists that do not survive a busy Tuesday.
- **The Security Officer** (v1.0): Assumes the archive will one day be read by someone it was not meant for. Wants end-to-end encryption that ordinary users survive, device verification, sessions an admin can revoke, and a plain statement of what the vendor cannot decrypt.
- **The Works Council Advocate** (v1.0): Knows that a chat log is a record of who spoke to whom at what hour. Wants presence a person controls, no individual activity scoring anywhere, retention that deletes rather than hides, and analytics that can be switched off across the organisation.
- **The Compliance Counsel** (v1.0): Will one day have to produce this archive, edits and deletions included, to a regulator or a court. Wants legal hold, an export a lawyer can work from, retention per channel, and an audit trail that survives the admin who made the change.
- **The Platform Engineer** (v1.0): Would rather run it than rent it, and wants to know whether that is a supported deployment or a hobby build. Cares about open protocols, federation, a plugin system with real permissions, and an upgrade path that does not orphan the customisations.
- **The Skeptic** (v1.0): Reads for the message-history cap, the tier where SSO appears, and what "unlimited" excludes. Has seen "end-to-end encrypted" mean direct messages only, on request, with search disabled — and wants that sentence found rather than assumed.

## European sovereignty — proven facts

Built only from facts on the vendor's own pages; a dimension we could not prove is left open, never scored as zero. Headline: not determined.

| Dimension | Finding | Points | Source |
|---|---|---|---|
| Legal entity | Not determined | — | — |
| Hosting location | Not determined | — | — |
| Hosting options | Not determined | — | — |
| Open source | Not determined | — | — |
| Data processing agreement | Not determined | — | — |
| Transfer impact assessment | Not determined | — | — |

## Key facts

Each fact is the vendor's own statement, cited to the source page it was read from ([S*n*] → Sources).

**Compliance**
- Encryption: yes [S2]
- GDPR definition: yes [S2]
- GDPR page: yes [S1]
- International transfers: Binding Corporate Rules · Standard Contractual Clauses · yes [S2]
- No data sale: yes [S2]
- No profiling: no [S2]
- Response deadline: 1 · 2 [S2]
- Supervisory authority: Office for Personal Data Protection, Prague, Czech Republic [S2]

**Data**
- Migration: yes [S1]
- Retention contract: provision of products and services · 3 [S2]
- Retention legal claims: legal claims protection · 16 [S2]
- Retention marketing: promotion and marketing · 6 [S2]
- Retention piracy protection: piracy protection · 10 [S2]
- Retention website: 2 [S2]
- Rights: access · withdraw consent · rectification · erasure · restriction · portability · objection · complaint [S2]

**Hosting**
- Cloud datacenters: yes [S1]
- Datacenters page: yes [S3]
- Deployment options: cloud · self-hosted [S1]
- Made in EU: yes · 50,000+ businesses [S1]

**Integrations**
- API: yes [S1]

**Legal**
- Company name: IceWarp Ltd. · IceWarp Inc. [S1]
- Controller identity: IceWarp Limited · Georgiou Gennadiou 43, 3041 Limassol, Cyprus [S2]
- Copyright: IceWarp Ltd. and IceWarp Inc. [S3]
- Copyright: IceWarp Ltd. · IceWarp Inc. [S5]
- Copyright: © Copyright 1999 - 2026. IceWarp Ltd. and IceWarp Inc. All rights reserved. [S4]
- Copyright holder: IceWarp Ltd. · IceWarp Inc. [S6]

**Product**
- Active sync platforms: iOS Secure Messaging; Windows 8 and 11 Mail/People/Calendar native support; Outlook Sync [S4]
- Antispam features: SpamAssassin engine · DNSBL/SURBL · greylisting · DKIM · DMARC · SPF with SRS · IP reputation · user black/white lists [S4]
- Antivirus: Antivirus: multi-vendor attachment scanning via cloud signature database [S2]
- Antivirus: Internal Anti-Virus; scans SMTP, IM, SOCKS, HTTP Proxy, FTP uploads; quarantine; automatic updates [S4]
- API access: yes [S4]
- API modules: Maintenance API · Chat & Conferences API · Mail API · Cloud API [S6]
- Backup: Automatic Backup (settings, databases, mails) [S4]
- Chatgpt integration: yes [S1]
- Cloud API scope: Centralized cloud API providing unified access to users' data for Calendars, Files, Notes, Contacts, Tasks and Emails across all IceWarp Servers worldwide [S6]
- Cloud features: WebDocuments · Conferencing · Central API · Booking service · Modern Files UI · Modern Notes UI · AI assistant · WebClient [S4]
- Collaboration standards: CalDAV, CardDAV, GroupDAV/WebDAV file sharing, iMIP scheduling, ACL [S4]
- Conferences: Conferences: browser-based video conferencing with screensharing, chat, password protection [S2]
- Conferencing: WebRTC audio, video and screensharing · 500 · 5000 [S4]
- Control panels: Parallels Plesk 11.5, Hosting Controller HC9, WebSitePanel 2.0 (Windows) [S4]
- Dashboard: Dashboard: personalized interactive panel with settings, background image, notes [S2]
- Database support: MySQL/MariaDB (recommended), MS SQL Server, SQLite limited functionality [S4]
- Deployment models: cloud · on-premises [S2]
- Desktop applications: Desktop Client, TeamChat Desktop, Outlook Sync, Desktop Office apps [S2]
- Desktop suite: yes · yes · emails · contacts · calendars · tasks · notes · chat · meetings [S1]
- Documents: Documents: browser-based document/spreadsheet/presentation editing with real-time collaboration [S2]
- Documents management: Documents Management System (Locking files and Versioning); online preview [S4]
- Download size: 93 [S5]
- DPA role: yes · processor [S2]
- Free trial: yes [S1]
- Ftp server: FTP Server with TLS/SSL (FTPS), IPv6, OTP/S-KEY [S4]
- Icechat ios: iOS chat app for sharing photos/location and logging in [S5]
- Icewarp suite: IceWarp Suite: email/IM/video conferencing, TeamChat, FileSync; WebClient, Desktop Client, mobile app [S2]
- Landscape mode: yes [S5]
- Mail archiving: yes [S4]
- Mail migration tool: IMAP/POP3 Migration Tool [S4]
- Mail server protocols: SMTP/ESMTP, IMAPv4 PUSH via IDLE, IMAP ACL/public folders, SASL, Active Directory/LDAP, POP3 [S4]
- Microservices runtime only onprem: Micro-services are runtime-only for on-premise customers except Recordings and Dashboard [S2]
- Mobile apps: Email · TeamChat · Conferences · Notes · yes [S1]
- Mobile availability note: yes · coming early 2026 · 14.3.0.2 [S1]
- Mobile telemetry: Mobile apps may collect device metadata, IMEI, diagnostics, crash data, telemetry [S2]
- Multi tenant: yes [S4]
- Night mode: yes [S5]
- Onprem no access: no [S2]
- Opt out telemetry: yes · yes [S2]
- Outlooksync: yes [S1]
- Overview: All-in-one suite: business email server, TeamChat, real-time document collaboration, video calls, ChatGPT integration; cloud or self-hosted [S1]
- Partners: yes [S1]
- Pin lock: yes [S5]
- Preview: Preview: cloud-based file/media/document thumbnail previews [S2]
- Push notifications: yes [S5]
- Recordings: Recordings: video conference recording stored in cloud [S2]
- Self hosted own hardware: yes [S1]
- Server monitoring: Server monitoring & Watchdog; SNMPv2c; syslog integration; IPv4 and IPv6 [S4]
- Shortener: Shortener: short URLs with open statistics and recipient geo-location [S2]
- System auth schemes: SHA1/MD5/Digest MD5/CRAM-MD5/NTLM; Kerberos/SSO, GSSAPI; SSL/TLS [S4]
- Teamchat storage: Stored in GroupWare database (SQLite not supported) [S4]
- Touchid lock: App or selected conversations can be locked with Touch ID [S5]
- Two factor authentication: yes [S4]
- Version: 13.0.2 · 2021-10-15 [S5]
- Voip calls: iOS · yes [S5]
- Web modules: Email · TeamChat · Conferences · Calendar · Files · Notes · Dashboard [S1]
- Webclient browsers: Google Chrome 112+ · Firefox 125+ · Safari 16+ · Opera 104+ · Microsoft Edge 112+ [S4]

**Subprocessors**
- Apptocloud: AppToCloud Services s.r.o. (Czechia) · IaaS provisioning & management [S2]
- Aws: Amazon Web Services Inc. (USA) · storage for Recordings micro-service [S2]
- Google: Google Ireland Limited · online advertising and visitor analytics [S2]
- Intercom: Intercom (R&D Unlimited Company, Ireland) · website chat [S2]
- Rocket science group: The Rocket Science Group LLC (USA) · newsletters and service alerts [S2]
- Salesforce: Salesforce.com Inc. (USA) · CRM/contact management [S2]
- Verifone avangate: Verifone Payments B.V / Avangate Inc. · payment processing [S2]
- Zendesk: ZenDesk Inc. (USA) · support ticketing [S2]

**Support**
- Migration tools: yes [S1]
- Sales contact: sales@icewarp.com · 1.888.423.9277 [S5]
- Sales email: sales@icewarp.com [S6]
- Sales phone: 1.888.423.9277 [S6]
- SLA plans: yes [S1]

## Questions

### Is IceWarp European?

Not determined: the vendor’s pages as captured do not say where IceWarp is based.

### Where does IceWarp store data?

Not stated on the vendor’s pages as of 3 Nov 2026.

### Does IceWarp have a free plan?

Not stated on the vendor’s pages as of 3 Nov 2026.

### What are the best alternatives to IceWarp?

As of 3 Nov 2026, the panel rates [Element (3.5/5)](https://whats-best.ai/software/instant-messaging/element), [Stackfield (3.5/5)](https://whats-best.ai/software/instant-messaging/stackfield) and [Wire (Messaging) (3.5/5)](https://whats-best.ai/software/instant-messaging/wire-messaging) highest among the other 24 Business Instant Messaging products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is [Element](https://whats-best.ai/software/instant-messaging/element) (UK / wider Europe). Ratings are the AI panel’s opinion, formed from public evidence: [how scores are made](https://whats-best.ai/methodology#ordering). The full list, with European products first: [IceWarp alternatives](https://whats-best.ai/software/instant-messaging/icewarp/alternatives).

## What this page leaves out

- We found no public information on pricing on the pages we read (icewarp.com, icewarp.com/privacy, icewarp.com/others/gdpr, icewarp.com/product/technical-specification, icewarp.com/apps/ice-chat, icewarp.com/product/api and 1 more). If the vendor publishes it somewhere else, send us the page.
- 6 product facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material.
- 2 subprocessors facts could not be confirmed on the vendor’s page as captured and were left out of this page and of the panel’s material.
- 1 hosting fact could not be confirmed on the vendor’s page as captured and was left out of this page and of the panel’s material.
- 2 sovereignty dimensions could not be confirmed on the vendor’s own pages and are shown as unknown.

## Sources

- [S1] Vendor page: https://icewarp.com (checked 2026-11-03)
- [S2] Privacy policy — found from the homepage: https://icewarp.com/privacy/ (checked 2026-11-03)
- [S3] Security / trust page — found from the homepage: https://icewarp.com/others/gdpr/ (checked 2026-11-03)
- [S4] Self-hosting / on-premises installation docs — found from the homepage: https://icewarp.com/product/technical-specification/ (checked 2026-11-03)
- [S5] Channels, threads & search — found from sitemap: https://icewarp.com/apps/ice-chat/ (checked 2026-11-03)
- [S6] Integrations & extensibility — found from sitemap: https://icewarp.com/product/api/ (checked 2026-11-03)
- [S7] Integrations & extensibility — found from sitemap: https://icewarp.com/product/api-teamchat/ (checked 2026-11-03)

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Cite as: whats-best.ai, "IceWarp — Business Instant Messaging", AI panel analysis, as of 2026-11-04. https://whats-best.ai/software/instant-messaging/icewarp

Corrections: https://whats-best.ai/correct/1375?target=page