Insights

Growing Cloud Offering Open-Xchange recently launched OX Cloud in partnership with Thexyz, expanding their cloud-based email and collaboration solutions. This presents a sales opportunity to target organizations seeking open-source, flexible cloud communication tools, especially in markets where Open-Xchange is establishing new partnerships.

Strong Industry Focus With a dominant position in secure communication, DNS, and mail server solutions, Open-Xchange serves a global customer base including major telcos and hosting providers. Sales teams can leverage this leadership to position integrated security and open-source collaboration offerings to similar enterprise clients.

Open Source Competitiveness Open-Xchange's roots in open-source software, combined with their popular products like Dovecot and PowerDNS, create opportunities to approach organizations prioritizing open standards, transparency, and customization, especially those in regulated industries concerned with privacy.

International Expansion The company’s recent partnerships in Southeast Asia and Malaysia and its multiple global offices suggest expansion into emerging markets, providing a foothold to sell localized solutions or tailored cloud services to international customers seeking reliable, open-source communication platforms.

Financial and Market Position With a revenue estimate between $100 million and $250 million and a strategic funding of $25 million, Open-Xchange is positioned for growth and innovation. Business development efforts can focus on targeting mid-sized organizations looking for scalable, secure, and open-source communication solutions aligned with industry leaders’ standards.

Open-Xchange Tech Stack

Open-Xchange uses 8 technology products and services including Scality, D3.js, Choices, and more. Explore Open-Xchange's tech stack below.

  • Scality
    IT Infrastructure
  • D3.js
    Javascript Graphics
  • Choices
    Javascript Libraries
  • C++
    Programming Languages
  • HSTS
    Security
  • VMware
    Virtualisation Software
  • Comcast
    Web Hosting
  • GoDaddy
    Web Hosting

Media & News

Open-Xchange's Email Address Formats

Open-Xchange uses at least 1 format(s):
Open-Xchange Email FormatsExamplePercentage
First.Last@open-xchange.comJohn.Doe@open-xchange.com
95%
FLast@open-xchange.comJDoe@open-xchange.com
2%
L.First@open-xchange.comD.John@open-xchange.com
1%
LastF@open-xchange.comDoeJ@open-xchange.com
2%

Frequently Asked Questions

Where is Open-Xchange's headquarters located?

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Open-Xchange's main headquarters is located at 72 Hohenzollernring Cologne, North Rhine-westphalia 50672 Germany. The company has employees across 3 continents, including EuropeNorth AmericaAsia.

What is Open-Xchange's phone number?

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You can contact Open-Xchange's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Open-Xchange's official website and social media links?

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Open-Xchange's official website is open-xchange.com and has social profiles on LinkedInCrunchbase.

What is Open-Xchange's SIC code NAICS code?

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Open-Xchange's SIC code is 2741 - Miscellaneous Publishing NAICS code is 5112 - Software Publishers.

How many employees does Open-Xchange have currently?

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As of February 2026, Open-Xchange has approximately 194 employees across 3 continents, including EuropeNorth AmericaAsia. Key team members include Chief Executive Officer: A. G.Cfo: M. S.Chief Financial Officer: D. V.. Explore Open-Xchange's employee directory with LeadIQ.

What industry does Open-Xchange belong to?

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Open-Xchange operates in the Software Development industry.

What technology does Open-Xchange use?

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Open-Xchange's tech stack includes ScalityD3.jsChoicesC++HSTSVMwareComcastGoDaddy.

What is Open-Xchange's email format?

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Open-Xchange's email format typically follows the pattern of First.Last@open-xchange.com. Find more Open-Xchange email formats with LeadIQ.

How much funding has Open-Xchange raised to date?

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As of February 2026, Open-Xchange has raised $25M in funding. The last funding round occurred on Oct 11, 2017 for $25M.

When was Open-Xchange founded?

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Open-Xchange was founded in 2005.

Open-Xchange

Software DevelopmentNorth Rhine-westphalia, Germany51-200 Employees

About Open-Xchange

Open-Xchange (OX) is a market leader of secure and open communication and office productivity software, IMAP server software and DNS solutions, with more than 220m seats sold through some of the world's largest hosters and telcos (including partners such as IONOS, Orange, Italiaonline, Comcast, GoDaddy, NTT and Softbank).

Our roots in Open Source have shaped our view of the world and culture – open, diverse, and with a bias to act, giving everyone at OX room to take responsibility within their team and grow. 

As a company, we believe in an internet that is open, safe and free, and create competitive products that allow our customers to deliver secure internet services with great user experience, and that respect privacy and generate value.

With 230+ people worldwide, OX develops and operates Open Source software (aaS) for mail/messaging and collaboration/productivity. Dovecot is the world’s most popular IMAP server software, and PowerDNS provides secure DNS services to our customers and their users.

Our business is fast-paced and changing constantly. We are always looking for people who share our vision, who want to make a difference, thrive in agile, non-hierarchical environments, and enjoy working in a high-tech environment as part of a truly international team.

OX is headquartered in Cologne, Germany, with further offices in Hamburg, Nuremberg and Olpe), in addition to the USA (Palo Alto, CA, and New York, NY), Finland (Espoo), The Netherlands (The Hague), Italy (Turin), and Japan (Tokyo).

Interested in working at Open-Xchange? 
Please visit: https://careers.open-xchange.com/jobs

Section iconCompany Overview

Headquarters
72 Hohenzollernring Cologne, North Rhine-westphalia 50672 Germany
Phone number
SIC Code
2741 - Miscellaneous Publishing
NAICS Code
5112 - Software Publishers
Founded
2005
Employees
51-200

Section iconFunding & Financials

  • $25M

    Open-Xchange has raised a total of $25M of funding over 5 rounds. Their latest funding round was raised on Oct 11, 2017 in the amount of $25M.

  • $100M$250M

    Open-Xchange's revenue is estimated to be in the range of $100M$250M

Section iconFunding & Financials

  • $25M

    Open-Xchange has raised a total of $25M of funding over 5 rounds. Their latest funding round was raised on Oct 11, 2017 in the amount of $25M.

  • $100M$250M

    Open-Xchange's revenue is estimated to be in the range of $100M$250M

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