Private company

GMX

Logo: GMX, Public domain, via Wikimedia Commons3

Free, ad-supported email service by GMX

GMX Mail is a free, advertising-supported email service provided by Global Mail eXchange or Global Message eXchange in Germany. Users may access received GMX mail via webmail, or using POP3 or IMAP4 protocols. Mail is sent using SMTP.2 It is part of Ionos.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

1997Founded1

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GMX Mail is a free, advertising-supported email service provided by Global Mail eXchange or Global Message eXchange in Germany. Users may access received GMX mail via webmail, or using POP3 or IMAP4 protocols. Mail is sent using SMTP. Founded in 1997, GMX is a subsidiary of Ionos SE, a stock-listed company in Germany, and a sister company to Ionos and Fasthosts Internet. In addition to an email address, each GMX account includes a Mail Collector, Address Book, Organizer, and File Storage. Every user can register up to 10 individual GMX email addresses. Popup ads are displayed to all users, including premium, at GMX login; as of 2021 GMX was the only large email provider using popup ads.2

Corporate structure

GMX is part of a group headed by United Internet. 21 entities, 4 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • United Internet Montabaur, Germany
    • Ionos Montabaur, Germany
      • GMX
      • InterNetX Subsidiary · Regensburg, Germany
      • web.de Subsidiary · Germany
    • united-domains AG Starnberg, Germany
    • 1&1 AG Subsidiary · 73.29% · Montabaur, Germany
    • 1&1 Versatel Subsidiary · Düsseldorf, Germany
    • Arsys Subsidiary · Logroño, Spain
    • Fasthosts Subsidiary · Gloucester
    • Schlund+Partner Subsidiary · Karlsruhe, Germany
    • Sedo Subsidiary · Köln, Germany
    • Strato GmbH Subsidiary · Berlin, Germany
    • IONOS Group SE Subsidiary · Montabaur, Germany
      • Cronon GmbH Subsidiary · Berlin, Germany
    • United Internet Investments Holding AG & Co. KG Subsidiary · Montabaur, Germany

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 1997Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
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  3. 3