1&1 Mail & Media Applications SE

What 1&1 Mail & Media Applications SE does

1&1 Mail & Media Applications SE is a German consumer internet company operating three primary email brands—GMX, WEB.DE, and mail.com—serving 42 million active users across the DACH region, the United Kingdom, France, Spain, and the United States. Founded in 1995 (WEB.DE) and 1997 (GMX), the company is a wholly-owned subsidiary of publicly listed United Internet AG and represents its Consumer Applications segment. The company employs approximately 1,000 staff across seven offices (Montabaur registered headquarters, Karlsruhe, Munich, Düsseldorf, Hamburg, Berlin, and Bucharest), with Karlsruhe hosting the bulk of development and operations.

The business runs on a privately operated infrastructure stack described as one of Europe's largest private Kubernetes clouds, deployed on bare-metal servers with over 85,000 CPU cores, 500+ cloud-native services, and peak email processing of ~15,000 messages per second. AI/ML capabilities are deployed in production across multiple functions: the Smart Mailbox (launched 2020) automatically categorizes incoming email into Orders, Newsletters, and Contracts & Subscriptions and integrates parcel tracking; the Target Group Planning (TGP) system—operated since 2008—enables targeted advertising across 300+ audience characteristics. The company maintains ISO 50001 (energy management), ISO 27001 (information security) alignment, GDPR/BDSG compliance, and 100% green electricity in German data centers.

Revenue is generated through a freemium model. Free tiers (FreeMail) are monetized via advertising sold through the in-house marketing subsidiary United Internet Media GmbH, which offers branding campaigns, dialog marketing, and programmatic advertising. Premium Mail and Top Mail tiers convert free users to paid subscriptions with expanded storage and features; cloud, De-Mail legally binding communications, and partner offerings in telephony, energy, insurance, and entertainment extend the monetized surface. Strategic partnerships include Deutsche Telekom (E-Mail made in Germany initiative), Deutsche Post AG (De-Mail), and the netID Foundation (European single sign-on), all reinforcing a German data sovereignty and security positioning against US Big Tech competitors.

Name

1&1 Mail & Media Applications SE

Legal name

1&1 Mail & Media Applications SE

Website

https://mail-and-media.com

Company type

Private

Founded year

1995

Operating status

Operating

Headcount range

501–1,000 employees

Short description

1&1 Mail & Media Applications SE is a German consumer email provider serving 42 million active users across DACH, the UK, France, Spain, and the US through the GMX, WEB.DE, and mail.com brands, monetized via freemium subscriptions and targeted advertising through its United Internet Media subsidiary.

Ownership category

akta.pro rank

Product category

Consumer Email Services

NAICS

Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers (516210), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Postal Service (49111)

SIC

Telegraph & Other Message Communications (4822), Services-Computer Programming, Data Processing, Etc. (7370), Newspapers: Publishing Or Publishing & Printing (2711)

akta.pro primary industry

Digital Publishing Platforms (News/Magazines) (BPAMAJAE)

akta.pro secondary industries

Content Distribution & Syndication Services (BPAFAIAK), Subscriber Identity, Entitlements & Access (SSO, IAM, Paywall) (MPAHAJAB)

Keywords

• Consumer email services
• Cloud storage solutions
• Digital identity management
• Premium mail subscriptions
• Email advertising platforms

Headquarters

HQ city

Karlsruhe

HQ country

Germany

HQ region

Europe

Offices7 records

Markets served

GTM type

B2C

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales

Revenue model

1. Advertising (United Internet Media): Primary revenue stream from digital advertising through proprietary marketing company United Internet Media. Offers branding campaigns, dialog marketing, programmatic advertising, and targeted advertising solutions based on TGP Quality Targeting with over 300 target group characteristics. Services advertising customers with lead generation, email marketing, online advertising brochures, and trusted services.
2. Premium Subscriptions: Fee-based premium services including Premium Mail and Top Mail with additional storage, premium cloud services, and partner offerings in telephony, energy, insurance, and entertainment. Freemium model converts free users to paid tiers for enhanced features.
3. Domain and Website Services: Domains, website solutions tailored to consumer needs, and office software as part of the Consumer Applications segment under United Internet AG.

Pricing tiers

Distribution channels3 records

Marketing channels7 records

Core offering

1&1 Mail & Media Applications SE provides free and premium email, cloud storage, and digital identity services to over 42 million active users across the DACH region through the consumer brands GMX, WEB.DE, and mail.com. The company is monetized via premium mail subscriptions and advertising served through its subsidiary United Internet Media, and operates proprietary cloud infrastructure to deliver the services.

Product overview

1&1 Mail & Media Applications SE operates a multi-brand platform centered on three core email products: GMX (serving over 20 million customers in the DACH region), WEB.DE (serving 17 million customers in Germany), and mail.com (targeting international/US users with unique email address options). These are complemented by United Internet Media (UIM), the in-house advertising and marketing subsidiary. The portfolio includes free basic email services, premium paid tiers with extra storage, cloud storage solutions with end-to-end encryption, editorial news offerings (WEB.DE News and GMX News), the AI-powered Smart Mailbox for intelligent email management, De-Mail for legally binding digital communication, and the Target Group Planning (TGP) advertising technology. The company serves over 42 million active users total and operates its own high-performance data centers to maintain control over the entire service stack.

Differentiator

Problem solved

Functional benefit

Brands

• GMX: Leading email and communications platform in the DACH region with over 20 million customers, offering premium mail and cloud services as well as editorial news content.
• WEB.DE
• mail.com
• United Internet Media

Products and services

• GMX Mail Free and premium consumer email service with integrated cloud storage, calendar, and online office tools, used by tens of millions of active users in German-speaking and other European markets.
• WEB.DE Mail German consumer email platform offering free and premium mailboxes, cloud storage, and identity services to a large user base in Germany.
• mail.com International consumer email service offering free and premium mailboxes with domain choice across hundreds of alternative domains, targeting users outside Germany.
• United Internet Media Advertising sales unit that monetizes the GMX, WEB.DE, and mail.com audiences by offering display, video, and performance advertising placements to business advertisers.
• De-Mail Legally binding digital communication service offered by GMX and WEB.DE that enables verified, confidential electronic messaging for consumers and businesses under German law.
• WEB.DE News Editorial news portal operated as a content destination for the WEB.DE audience, aggregating and producing news distributed via the WEB.DE homepage and syndication to Google News.
• GMX News Editorial news portal operated as a content destination for the GMX audience, aggregating and producing news distributed via the GMX homepage and external syndication.

Quantifiable outcome

• Leading email provider in Germany, Austria, and Switzerland with 42 million active users
• +5 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability9 records

Feature6 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Deutsche TelekomcoreStrategic or Co-development PartnerCo-founded the 'E-Mail made in Germany' initiative with GMX and WEB.DE to ensure automatic encryption on all transmission paths and guarantee data storage at secure German data centers compliant with German data protection laws. Partnership established in response to mass surveillance revelations.
• Deutsche Post AGcoreStrategic or Co-development PartnerDe-Mail service partnership enables legally binding digital communication with companies and public authorities. WEB.DE and GMX enable customers to announce and receive physical letters by email since 2020, adding digital benefits to traditional mail. Email inbox becomes communication hub integrating physical mail notifications.
• netID FoundationcoreTechnology or IntegrationnetID initiative enables customers to log in securely and conveniently to numerous online providers with a single click using their email address and password. Compliant with European data protection laws with no data transmission without explicit consent. Provides secure alternative to US login services.
• AfB (Academic Data)minorOthersHardware disposal partner for sell-back and donation of retired IT equipment. In 2025, 195.5 tons of hardware was sold or donated through AfB, resulting in 1,497 tons of CO2 savings. Supports company's sustainability and circular economy goals.
• Green IT SolutionminorOthersHardware disposal partner for sell-back and donation of retired IT equipment. Combined with AfB, 195.5 tons of hardware was sold or donated in 2025. Supports company's responsible resource management.
• UNICEF (via United Internet for UNICEF Foundation)coreOthersCharitable partnership through United Internet for UNICEF foundation. Approximately 78 million euros raised for worldwide UNICEF programs through regular fundraising appeals to customers at WEB.DE, GMX, 1&1, and IONOS platforms plus additional company donations. Foundation donated 4.08 million euros to UNICEF in 2025 alone.

Scale indicators14 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Microsoft Outlook.com: Outlook.com is Microsoft's global consumer email offering bundled with Office 365 and Windows ecosystem defaults. It competes for the same cross-border consumer email users as mail.com and GMX international, but with vastly broader productivity-suite distribution.
• Yahoo Mail: Yahoo Mail is a long-standing global consumer email service still used by tens of millions. It is a comparable freemium webmail operator competing for the same consumer messaging time and attention as GMX/WEB.DE/mail.com.
• AOL Mail: AOL Mail is a legacy US consumer email service still in active use. It is comparable to mail.com's US-market positioning and remains a structural competitor in legacy webmail segments.
• Google (Gmail): Gmail is the world's largest consumer email service and the default on Android. It is the dominant competitor in every market where Mail & Media operates (especially mail.com USA), with deep mobile-OS and search integration that GMX/WEB.DE cannot match at scale.

Direct peers

• mailbox.org: mailbox.org is a Berlin-based secure, ad-free email provider targeting business and privacy-oriented users in Germany. It is a direct peer in DACH on the privacy/data-sovereignty dimension that defines Mail & Media's differentiation.
• Posteo: Posteo is a Berlin-based sustainable, ad-free email provider targeting privacy-conscious German consumers. It is a direct comparable on privacy, sustainability, and German-hosting positioning, although it operates at a much smaller scale.
• Deutsche Telekom (T-Online Mail): T-Online is Deutsche Telekom's consumer email and portal offering and a co-founder of the 'E-Mail made in Germany' initiative alongside GMX and WEB.DE. It is the most direct comparable in the German consumer email market with the same regulatory, data-residency, and target-segment positioning.

Emerging players

• Proton (Proton Mail): Proton Mail is a Swiss end-to-end encrypted email service rapidly scaling across Europe and the US. It targets the same privacy-conscious user base as Mail & Media's encrypted offerings and competes on the same regulatory/sovereignty narrative.

Regional players

• Strato: Strato is a major German hosting and email provider (now part of IONOS/United Internet Group), offering domain, mailbox, and cloud services to German SMBs and consumers. It is a regional comparable on German-domiciled consumer/SMB email and hosting services.

Others

• Open-Xchange: Open-Xchange provides white-label email and productivity stack technology used by European ISPs and telcos including many DACH providers. It is an ecosystem/technology comparable to Mail & Media's privately built Kubernetes/email stack rather than a direct consumer competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat7 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/linkedin

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about 1&1 Mail & Media Applications SE