IceWarp is an enterprise email server and collaboration hub positioned as an alternative to Microsoft 365/Google Workspace. The page clearly highlights that it is “Made in the EU,” headquartered in Prague, Czech Republic, and says it is used by a large number of businesses. The product brings business email, TeamChat, real-time document collaboration, video meetings, files, an AI assistant/ChatGPT integration, and more into a single app, with both cloud and self-hosted deployment options.
On the email side, IceWarp supports SMTP/ESMTP, IMAPv4, IMAP ACL, public folders, AD/LDAP, archiving, migration tools, multi-tenancy, rule-based filtering, two-factor authentication, and more. For IM, it offers group chats, one-to-one messaging, multi-user chat rooms, guest access, history archiving, and an XMPP bridge. Meetings are based on WebRTC and support audio/video, screen sharing, meeting and webinar modes; the page states that meetings support up to 500 participants and webinars up to 5000 participants. SMS Server supports HTTP and Modem multi-gateway setups, a two-way HTTP API, SMS-to-Email, and Email-to-SMS, but does not disclose SMS coverage, unit pricing, or delivery rates.
The page does not list public pricing and only shows a Contact sales form, after which the sales team will follow up. Deployment options fall into two categories: cloud and self-hosted. The self-hosted technical specifications are relatively detailed; in one example, 1000 users require an IceWarp server, a database server, and Yoda full-text search, with a note that large-scale deployments require multiple nodes. This suggests it is closer to an enterprise IT project than a lightweight, ready-to-use mailbox service.
For APIs, IceWarp provides a Maintenance API, Chat & Conferences API, Mail API, and Cloud API; the Cloud API can access calendars, files, notes, contacts, tasks, and email. Integrations include CalDAV, CardDAV, WebDAV, Exchange ActiveSync, Outlook Sync, SSO, Syslog, and more. No public deliverability percentage is provided, but its anti-spam and authentication capabilities are fairly comprehensive, including SpamAssassin, DNSBL/SURBL, DKIM, DMARC, SPF with SRS, IP Reputation, antivirus, and zero-hour virus protection. The disclosed data center locations include the Czech Republic, the United States, Germany, Italy, Bahrain, South Africa, and India, and the site lists compliance/certification information such as PCI DSS, HIPAA, ISO 27001, and SOC.
Its strengths are high feature integration, broad protocol support, self-hosting capability, and relatively transparent compliance information. It is well suited to mid-sized and large organizations that need email sovereignty, private deployment, multi-tenant hosting, or an alternative to Microsoft/Google. Downsides include opaque pricing and relatively high implementation complexity; the SMS feature depends on gateways and has unclear rates; and there is no disclosure around access from mainland China, payment options, or adaptation to local regulatory requirements. Chinese users should first test network connectivity, inbound/outbound email stability, and latency to overseas data centers. If local support is required, alternatives such as Tencent Exmail, Alibaba Mail, and NetEase Enterprise Mail may also be worth evaluating.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on icewarptech.si official site.
icewarptech.si is an Slovenia Comms & Email provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach icewarptech.si directly.