whats-best.ai
Search Sign in

Business Instant Messaging

IceWarp

Provenance unknown Report an error

Panel rating · 6 judges · How to read the stars

Category median

Sovereignty: not determined

0–5 in half steps. 5 means the rubric's top anchor is met on the evidence.

by IceWarp Software Ltd. · icewarp.com

Report an error on this page Is this your product? →

Link to this page

IceWarp: AI-assisted analysis on whats-best.ai IceWarp: AI-assisted analysis on whats-best.ai (dark)

Add ?theme=dark to the image address for dark backgrounds. The badge shows the category and the month of the latest evaluation, and EU-Made where that is the product’s provenance. It never shows a score.

IceWarp 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
Panel verdict
The AI panel rates IceWarp 2/5, the mean of 6 judges. 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. how scores are made
As of
Vendor pages captured 3 Nov 2026; evaluated by the panel 3 Nov 2026. all sources

IceWarp alternatives, European ones first →

Read this page as one judge. Each weighs the same scores by what they care about.

The Platform Engineer

Weighted verdict

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.

Same scores as the panel view — this lens weights them the way this judge cares.

Scored by The Platform Engineer

Panel median The Platform Engineer This judge’s scores over the panel median. Each label opens its reasoning below.
Scores per criterion, in stars out of 5
Criterion Panel median The Platform Engineer
Channels, threads & search 1 of 5 1 of 5
Encryption & access control 2 of 5 2 of 5
Retention, discovery & co-determination 1.5 of 5 1.5 of 5
Deployment & data custody 3.5 of 5 3.5 of 5
Integrations & extensibility 2 of 5 2.5 of 5
European sovereignty 3 of 5 3.5 of 5

Channels, threads & search

How this is scored

The daily surface: channel model, threading, mentions, files, and whether search can find a decision made eighteen months ago.

0 — Not a team chat: no persistent channels or group conversations, only notifications or one-off messages.

3 — Group chats or channels and direct messages, file sharing, and search over messages.

5 — Public and private channels, threaded replies, mentions and reactions, file sharing with previews, and search across message history.

8 — Cross-organisation or guest channels with clear boundaries, message editing history, pinned and saved items, search with filters by channel, person and date, and unlimited history or a documented history limit per plan.

10 — The archive is a working knowledge base: search that ranks well across years, threads that stay readable, channel lifecycle management (archive, rename, merge) without losing history, and export of a conversation in a form a human can read.

Report an error

The Platform Engineer

TeamChat is a genuine module across web, desktop and mobile, with file sharing and per-conversation locking via Touch ID or PIN, but the captured pages never show a channel model, threaded replies or search over message history — the chat app page documents landscape mode and push notifications instead. Until something shows me search finding an eighteen-month-old decision, this is a real chat surface with an unproven archive. 1 2 5

Report an error

Encryption & access control

How this is scored

What is encrypted and against whom, plus who can reach which room. Judged on documented mechanism, since "encrypted" in this category usually means the vendor holds the keys.

0 — The vendor states that messages are transmitted or stored unencrypted.

3 — Encryption in transit stated, with admin and member roles.

5 — Encryption in transit and at rest stated, admin roles and private channels, guest accounts limited to the channels they are invited to, and SSO or two-factor authentication.

8 — Optional end-to-end encryption for direct messages or private rooms with the trade-offs named, or customer-managed encryption keys; device or session management an admin can revoke, granular permissions per channel, and documented key handling.

10 — End-to-end encryption as a first-class mode — documented or open cryptography, cross-device key management that ordinary users survive, identity verification, and the vendor stating plainly what it cannot decrypt.

Report an error

The Platform Engineer

The technical specification states SSL/TLS support together with Kerberos single sign-on and two-factor authentication, while the privacy policy hedges that encryption is used "whenever it's technically feasible" — a caveat, not a mechanism. We found no public information on at-rest encryption of the message store, private channel granularity, guest scoping or key handling. 2 4

Report an error

Retention, discovery & co-determination

How this is scored

The archive as a legal object: retention policies, export for discovery, audit, and the monitoring features a works council will ask to have switched off under BetrVG §87(1) no. 6.

0 — A messenger with no organisation-level administration: each user controls their own history, and the organisation has no central export or retention.

3 — Admin export of workspace data or a history setting, with users controlling their own status.

5 — Configurable retention for messages and files, admin export of workspace data in a documented format, and an audit log or activity log of administrative actions.

8 — Per-channel retention executed per policy, legal-hold and eDiscovery export including edits and deletions, a full admin audit trail, and presence, read receipts or activity analytics switchable off organisation-wide.

10 — Built to pass a works agreement and a subpoena on the same day: granular retention with documented deletion, discovery export a lawyer can use, complete audit, and individual productivity scoring stated as not part of the product.

Report an error

The Platform Engineer

The on-premises specification lists automatic message archiving and automatic backup of settings, databases and mails, which is an admin-level history capability, and the privacy policy states the vendor's own retention periods, including sixteen years after contract termination for legal claims. We found no public information on configurable retention for chat, discovery export, an administrative audit trail, or organisation-wide switches for presence and read receipts — the questions a works council asks first. 2 4

Report an error

Deployment & data custody

How this is scored

Whether the customer can hold their own archive: self-hosting, private cloud, open source, federation, and what an exit actually looks like.

0 — The terms state that the customer's messages cannot be exported or are not returned when the account ends.

3 — Cloud service with an admin export of messages and files.

5 — Cloud service with a documented full export of messages, files and channel structure, or a choice of hosting region, a dedicated instance or a private-cloud option.

8 — A self-hosted edition close to feature parity, or an open-source core with a documented upgrade path, plus complete export including files and metadata.

10 — Custody is the customer's: open-source or source-available server, self-hosting supported as a first-class deployment, open protocol or federation, and a migration path in and out that the vendor documents rather than resists.

Report an error

The Platform Engineer

Self-hosting is a first-class deployment, not a hobby build: a downloadable installer, database options in MySQL/MariaDB and MS SQL, migration tools, monitoring and watchdog in the technical specification, and a plain statement that in on-premises deployments the vendor has no access to personal data at all. We found no public information on an open-source codebase, chat federation, or export of chat history and channel structure as such — backup covers settings, databases and mails — and some micro-services lean back on the vendor's cloud, with Preview offloading processing and Recordings stored there. 1 2 4

Report an error

Integrations & extensibility

How this is scored

Bots, webhooks, app framework, identity — whether the chat becomes the place work is noticed, and whether that is buildable without a partner agreement.

0 — A closed messenger: no integrations, webhooks, bots or API.

3 — Incoming webhooks or a handful of named integrations.

5 — An app directory or a list of native integrations with common tools, a documented API, incoming webhooks and bots or slash commands.

8 — A proper app framework with interactive components, event subscriptions with retries, SSO and SCIM provisioning, documented rate limits and a sandbox.

10 — A platform: versioned API with a deprecation policy, an app directory or plugin system with permissions a customer can audit, and integrations the vendor maintains rather than lists.

Report an error

The Platform Engineer

There is a documented multi-module API surface — Maintenance, Chat & Conferences, Mail and Cloud APIs, the last described as unified access to calendars, files, notes, contacts, tasks and email across all servers — plus open protocols (CalDAV, CardDAV, WebDAV, Active Directory/LDAP) and a ChatGPT integration. We found no public information on webhooks, bots or slash commands, an app directory, documented rate limits or a sandbox, so this is a documented API rather than a platform with a permission model I could audit. 1 4 6

Report an error

European sovereignty

How this is scored

Where the archive and its metadata live, who the contracting entity is, which subprocessors touch it. Independently sourced by the sovereignty pipeline; scored here as this buyer weighs it. Dimensions the evidence does not establish are unknown, not non-EU.

0 — Proven non-EU on every dimension the evidence covers: non-EU vendor and contracting entity and non-EU hosting, with no EU option stated.

3 — One European element proven — EU data residency for message content, an EU contracting entity or EU representative, or a published DPA — with the rest of the chain unstated.

5 — EU hosting stated as standard or selectable and an EU contracting entity or EU representative, with a DPA offered; the subprocessor chain (notifications, AI features, analytics) is unstated or partly non-EU.

8 — EU hosting on named infrastructure covering content and metadata, EU contracting entity, subprocessor list published with locations, any non-EU processing named with its legal basis.

10 — Sovereign end to end and evidenced: vendor, entity, hosting and every subprocessor European, certification published, and a self-hosted option that removes the question.

Report an error

The Platform Engineer

The contracting controller is an EU entity (IceWarp Limited, Limassol, Cyprus) with its main establishment under the Czech supervisory authority, the subprocessor list is published with locations and the US-based ones (Amazon Web Services, Salesforce, ZenDesk, The Rocket Science Group) are named with their purposes and SCC/BCR transfer mechanisms, and the self-hosted route removes the vendor from the data path entirely. What holds it back from the top marks: no captured page states where cloud message content and metadata are hosted — the datacenters page exists but its contents are not in evidence. 1 2

Report an error

Pricing transparency not rated — the vendor publishes no price

How this is scored

Whether a buyer can compute the annual invoice for their headcount — including the retention, compliance and guest features they actually need — from public pages alone.

0 — No public prices at all; every tier is a sales conversation.

3 — A public "from" price or one priced tier per user.

5 — Per-user prices public for the main tiers with the billing period stated and the main features per tier listed.

8 — Every tier priced publicly with per-user maths, history and storage limits, feature boundaries (retention, SSO, eDiscovery), minimum term and VAT treatment stated; self-hosted licensing priced too where offered.

10 — Complete price computability: annual invoice derivable for a given headcount and deployment choice, including guest users, storage and any per-instance licence.

Report an error

The Platform Engineer not rated — no public information

We found no public information on pricing: no per-user figures, tier structure, history or storage limits, trial terms or VAT treatment appear on the homepage, the technical specification pages or the product pages we read, and buyers are routed to a sales phone line and email. The free trial is referenced only as an unanswered question. 1 4 6

Report an error

European sovereignty — proven facts

0 of 6 dimensions proven

Built only from facts shown on the vendor's own pages. A dimension we could not prove is left open, not scored as zero.

Hosting location Not determined — uncited Report an error
Hosting options Not determined ⚠ unverified — uncited Report an error
Open source Not determined — uncited Report an error
Data processing agreement Not determined — uncited Report an error
Transfer impact assessment Not determined — uncited Report an error

Questions about IceWarp

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), Stackfield (3.5/5) and Wire (Messaging) (3.5/5) 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 (UK / wider Europe). Ratings are the AI panel’s opinion, formed from public evidence: how scores are made. The full list, with European products first: IceWarp alternatives.

Where this could be wrong

What we left out

A claim that does not survive our checks costs us the claim, not the page. This is what was taken off this one.

Do you know more about IceWarp? Tell us Report an error on this page

Sources (7)

The pages every claim on this page was read from — each one checked, dated, and kept verifiable.

  1. 1 Vendor page icewarp.com Checked 3 Nov 2026 Details →
  2. 2 Privacy policy — found from the homepage icewarp.com Checked 3 Nov 2026 Details →
  3. 3 Security / trust page — found from the homepage icewarp.com Checked 3 Nov 2026 Details →
  4. 4 Self-hosting / on-premises installation docs — found from the homepage icewarp.com Checked 3 Nov 2026 Details →
  5. 5 Channels, threads & search — found from sitemap icewarp.com Checked 3 Nov 2026 Details →
  6. 6 Integrations & extensibility — found from sitemap icewarp.com Checked 3 Nov 2026 Details →
  7. 7 Integrations & extensibility — found from sitemap icewarp.com Checked 3 Nov 2026 Details →