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gpg4o

by Giegerich & Partner · Since 1993
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Active1+ countriesOn-premise
Quick facts
VendorGiegerich & Partner
Year launched1993
StatusActive
LocationEuropaplatz 5 64293 Darmstadt
Countries served1+
Languages2
Integrations1+
Free tierN/A
Free trialYES
Contact salesN/A

About gpg4o

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Gpg4o by Giegerich & Partner GmbH is a cybersecurity software designed to provide robust encryption and decryption capabilities for email communication. One of its standout features is the seamless integration with popular email clients like Microsoft Outlook, making it easy for users to secure their emails without disrupting their workflow. The user interface of gpg4o is intuitive and user-friendly, allowing even those with limited technical knowledge to encrypt and decrypt emails effortlessly. The design elements are clean and minimalistic, focusing on functionality and ease of use. Users can access essential features with a few clicks, streamlining the process of securing sensitive information. What sets gpg4o apart from its competitors is its advanced encryption algorithms and key management system. The software offers a high level of security, ensuring that emails remain private and secure during transmission. Its innovative approach to encryption technology makes it a reliable choice for organizations handling sensitive data. In terms of performance, gpg4o excels in speed, efficiency, and reliability. It can handle large datasets and complex operations without sacrificing performance.

Pros & Cons

Pros
  • Strong integration within Outlook makes encryption seamless
  • Uses widely trusted OpenPGP standard
  • Supports enterprise key-server management
  • Flexible licensing — perpetual use and multi-device with named-user model
  • Offers long trial period and maintenance upgrade options
Cons
  • No marketplace or extensions beyond core features
  • Windows-only; no macOS/mobile support
  • Lacks integrated chat or phone support
  • Maintenance renewal must be done manually
  • UI may feel dated compared to modern Office UX

Features

Key features

• Seamless Outlook Integration – Encrypt, decrypt, sign, verify emails and attachments directly within Outlook
• OpenPGP Standard-Based – Secure, end-to-end asymmetric encryption recognized worldwide
• Key Server Management – Synchronize with public/private key servers; includes Enterprise KeyServer support

Additional features

• Attachment Signing/Encrypting – Ensures integrity and confidentiality of files
• Group Rules & Policies – Auto-encrypt when addressing distribution lists or Exchange groups
• Supports GnuPGWrapper library for GnuPG versions 1.x–2.x
• License auto-renews 1 or 3 year maintenance for updates/support

Pricing

Free trial
Free version
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Countries & Languages

1
Countries served
2
Interface languages
1
Billing currencies

Available in

Germany

Interface languages

EnglishGerman

Billing currencies

🇪🇺EUR

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