SEPPmail Deutschland GmbH

What SEPPmail Deutschland GmbH does

SEPPmail Deutschland GmbH is the German operating subsidiary of Swiss-headquartered SEPPmail AG, founded circa 2000–2001 and based in Brunnthal, Germany. The company provides secure email communication infrastructure centered on the Secure E-Mail Gateway, which performs GDPR-compliant encryption of outbound confidential emails and supports S/MIME, PGP, and the proprietary GINA spontaneous encryption method that allows secure delivery without pre-arranged key exchange between sender and recipient. The product portfolio bundles the gateway with add-on modules including Cloudfilter for phishing, malware, spam, and QR-code-based attack detection (claimed detection rate 99.995%), Secure Large File Transfer, Digital Signature & managed PKI, Central Disclaimer Management, Digital Certificates, an Outlook Add-in, and a Microsoft 365 integration. Deployment models span on-premises hardware/virtual appliance, Microsoft Azure, and the SEPPmail.cloud SaaS, addressing organizations that cannot place all email workloads in public hyperscaler environments.

The business combines a one-time perpetual license for on-premises deployments with subscription pricing for cloud and managed services, sold through direct field and inside sales supplemented by a structured partner channel (sales partners, technology partners, distributors) and a dedicated micro-SMB channel via zertmail for organizations with fewer than five mail accounts. Targeted verticals include professional services and legal, banking and financial services, healthcare, public institutions, and large enterprises across DACH (Germany, Austria, Switzerland) and now Spain. The firm claims over 20 years of category presence and lists enterprise customers including KPMG, REWE Group, dm drogerie markt, Helaba, Swiss Life, DATEV, Helvetia Versicherungen, SUVA, Hirslanden, and Hellmann Worldwide Logistics.

Corporate ownership rests with SEPPmail AG (Switzerland); SEPPmail Deutschland GmbH operates as the primary German-market entity. The company holds TeleTrusT 'IT Security made in Germany/EU' seals and consecutive VBspam+ certifications. Operating risks include the May 2026 disclosure of seven critical vulnerabilities (including CVE-2026-2743, CVSS 10.0) in the Secure E-Mail Gateway, which were patched across versions 15.0.2.1, 15.0.3, and 15.0.4, and the expiration of the proprietary GINA patent, which removes a key exclusivity barrier.

Name

SEPPmail Deutschland GmbH

Legal name

SEPPmail Deutschland GmbH

Website

https://seppmail.de

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

SEPPmail Deutschland GmbH provides a GDPR-compliant Secure E-Mail Gateway with proprietary GINA spontaneous encryption, supporting S/MIME and PGP for enterprises in DACH regulated industries. It sells cloud, on-premises, and Azure deployments via direct sales and channel partners.

Ownership category

akta.pro rank

Product category

Email Security Software

NAICS

Computer Systems Design and Related Services (5415)

SIC

Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Email Data Loss Prevention & Encryption (HDADAKAD)

akta.pro secondary industries

Email Phishing & BEC Protection (HDADAKAB), Key Management, Encryption & Secrets Management (KMS/HSM/Vault) (HDABAHAG)

Keywords

• Email encryption software
• Secure email gateway
• Phishing protection
• Digital signature services
• Managed PKI

Headquarters

HQ city

Brunnthal

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. Secure E-Mail Gateway (on-premises appliance): Sale of hardware appliances and/or virtual machine images for on-premises installation. Perpetual license model combined with support and maintenance contracts.
2. SEPPmail.cloud (cloud-based email security): Cloud-hosted email security service with continuously updated protection. Subscription-based recurring revenue from cloud filtering and security services. Features a 99.995% detection rate.
3. Digital Certificates & mPKI Services: Issuance and management of digital certificates integrated with the Secure E-Mail Gateway for digital signatures.
4. Large File Transfer: Secure transmission of large files as part of the email security suite, available both on-premises and cloud.

Pricing tiers

Go-to-market motion2 records

Distribution channels7 records

Marketing channels8 records

Core offering

SEPPmail Deutschland GmbH sells the SEPPmail Secure E-Mail Gateway, a central email security platform that encrypts confidential emails in a GDPR-compliant manner using S/MIME, PGP, and the proprietary GINA spontaneous encryption method. The platform is extended with Cloudfilter for phishing/malware/spam protection, secure Large File Transfer, Digitale Signatur & mPKI, Central Disclaimer Management, Digital Certificates, Outlook Add-in, Microsoft 365 integration, and Azure deployment, sold as on-premises appliance licenses or as the SEPPmail.cloud SaaS to enterprise and regulated buyers.

Product overview

SEPPmail offers a unified email security platform centered on the Secure E-Mail Gateway as its core product. The platform is supplemented by multiple add-on modules including cloudfilter (phishing/spam/malware protection), Secure Large File Transfer, Digitale Signatur & mPKI (digital signatures), Central Disclaimer Management, Digitale Zertifikate, and Microsoft 365/Outlook integrations. Deployment options include on-premises appliance, Azure cloud, and SEPPmail.cloud SaaS. The proprietary GINA technology enables spontaneous email encryption without pre-arranged key exchange.

Differentiator

Problem solved

Functional benefit

Brands

• SEPPmail.cloud: Cloud-based email security solution with 99.995% detection rate for phishing, malware, and spam.
• SEPPmail.cloudfilter
• SEPPmail.appliance
• SEPPmail Secure E-Mail Gateway
• SEPPmail Outlook Add-in

Products and services

• SEPPmail Secure E-Mail Gateway Central email security gateway that encrypts emails marked as confidential in a GDPR-compliant manner, supporting standard encryption technologies as well as the proprietary GINA spontaneous encryption method regardless of the recipient's location or system. Targeted at enterprises and regulated organizations with on-premises (appliance/VM) and cloud deployment.
• SEPPmail.cloudfilter Cloud-based security filter protecting against phishing, viruses, spam, malware, spyware, and ransomware, including QR code scanning in emails and attachments to detect malicious links behind QR codes, with a claimed 99.995% detection rate. Marketed to organizations that need continuously updated, always-current email security delivered as a cloud service.
• Secure Large File Transfer Secure transmission of large files as part of the email security suite using the proprietary GINA technology, available both on-premises and as a cloud service, for organizations that need to send heavy documents securely by email rather than via fax or physical media.
• Digitale Signatur & mPKI Digital signature and managed PKI solution that integrates selected certificate authorities with the Secure E-Mail Gateway to automatically create digital signatures and guarantee sender authenticity, message confidentiality, and message integrity.
• Central Disclaimer Management Central disclaimer management module ensuring consistent branding of all outgoing emails and that legal policy (disclaimer) requirements are covered in email signatures across the organization.
• Digitale Zertifikate Digital certificate management for email security and encryption, providing the certificate lifecycle underpinning the Secure E-Mail Gateway's digital signature and encryption capabilities.
• SEPPmail Outlook Add-in Microsoft Outlook add-in enabling end users to send encrypted and digitally signed emails directly from the Outlook interface, simplifying adoption of the Secure E-Mail Gateway for users on Microsoft 365.
• SEPPmail und Microsoft 365 Integration solution extending Microsoft 365 email protection with comprehensive secure email communication capabilities, marketed as a way for Microsoft 365 customers to add SEPPmail's encryption, signature, and filtering layer on top of Microsoft infrastructure.
• SEPPmail auf Azure Deployment option for the SEPPmail Secure E-Mail Gateway on Microsoft Azure, sold and fulfilled via the Microsoft Azure Marketplace for customers using Microsoft Azure infrastructure.
• SEPPmail.cloud Cloud-based SaaS email security service offering continuously updated standards and additional Cloudfilter protection against phishing, malware, and spam with a claimed 99.995% detection rate, sold as a subscription to enterprise and mid-market customers preferring cloud delivery.
• SEPPmail.appliance On-premises appliance/VM deployment of the Secure E-Mail Gateway for organizations that require data sovereignty and on-premise operation, sold with perpetual licensing and support contracts via direct sales and distributors.

Quantifiable outcome

• 99.995% detection rate for phishing, malware, and spam
• +2 more outcomes

Named customers14 records

Segments6 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• zertmailcoreChannel Partner/ Reseller/ Distributorzertmail is an authorized channel partner of SEPPmail specifically serving micro-businesses (Kleinstanwender) with fewer than 5 mail accounts, including medical practices (Arztpraxen), law firms (Rechtsanwälte), kindergartens, and other small organizations. This extends SEPPmail's reach into the smallest SMB segment.
• MicrosoftcoreTechnology or IntegrationSEPPmail offers a dedicated Microsoft 365 integration product and a SEPPmail Outlook Add-in for seamless encrypted email within Microsoft Outlook. SEPPmail is also deployable on Microsoft Azure. The company markets itself as extending Microsoft 365 email protection.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Emerging players

• Trustifi: Cloud-delivered email security, DLP, and encryption service targeting mid-market customers with Microsoft 365 and Google Workspace — an emerging SaaS alternative overlapping SEPPmail's Cloudfilter and Secure E-Mail Gateway value proposition.
• Virtru: Encryption and data protection platform with Google Workspace and Microsoft 365 integrations; an emerging alternative for organizations seeking cloud-native encryption overlays comparable to SEPPmail's M365 integration story.

Broad incumbents

• Proofpoint: Global leader in email security, DLP, and compliance with broad enterprise coverage; competes directly with SEPPmail on secure email gateway, anti-phishing, and encryption for large multinationals that include DACH-based banks and insurers.
• Microsoft (Defender for Office 365): Bundled email security and encryption inside Microsoft 365 — the default incumbent for SEPPmail's installed base and the principal competitive threat, particularly as Defender absorbs encryption, anti-phishing, and BEC features.
• Mimecast: Cloud-native email security, archiving, and continuity provider; offers encryption and phishing protection overlapping with SEPPmail's Secure E-Mail Gateway and Cloudfilter for mid-market and enterprise accounts.
• Sophos: Broad cybersecurity vendor offering Sophos Email with anti-phishing, encryption, and DLP; competes with SEPPmail at the SMB and mid-market tier, especially via channel partners across Europe.
• Cisco (Secure Email): Enterprise-grade secure email gateway (formerly IronPort) with encryption and anti-phishing capabilities; competes for large DACH enterprise and government accounts where Cisco's broader security portfolio is already deployed.

Direct peers

• Echoworx: Specialist in email and document encryption (OneWorld Encryption Platform), serving regulated enterprises and government clients — directly comparable to SEPPmail's encryption-centric positioning with multi-tenant and policy-based delivery.
• Hornetsecurity: German-based provider of email cloud security, anti-phishing, and encryption products (including 365 Total Protection and NoSpamProxy) serving SMBs and enterprises across DACH and Europe — directly overlapping with SEPPmail's email security and encryption focus in the same home market.
• Zertificon Solutions: Berlin-based vendor of Z1 SecureMail and related email encryption products for German and European enterprises, banks, and public institutions — a head-to-head competitor in the DACH email-encryption niche.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• YouTubeyoutube.com/channel/UCbHY7nz3c3AVnkJoaD4x_jA
• Facebookfacebook.com/SEPPmail
• LinkedInde.linkedin.com/company/seppmail-deutschland-gmbh
• Xx.com/SEPPmail

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

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 SEPPmail Deutschland GmbH