Gpg4o for Windows

Name: Gpg4o
Rating: 5 (1 reviews)
Author: Giegerich & Partner

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Editors’ Review

Download.com staffJuly 30, 2026

This Outlook add-in seamlessly integrates OpenPGP encryption, offering one-click mail and attachment protection with hidden complexity. It includes key management and a setup wizard.

Top Recommended Alternative

Atomic VBA Password Recovery

Trial version

Pros
- Convenient OpenPGP integration for Outlook
- Single-click email and attachment encryption
- Hides encryption complexity from the user
- Supports various mail servers
- Compatible with many OpenPGP implementations
Cons
- Specific add-in functionality not detailed
- No mention of mobile or cross-platform support

Gpg4o for Windows

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Full Specifications

GENERAL

Release: July 25, 2014

Latest update: July 30, 2026

Version: 3.3

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows 8
Windows 2003
Windows 10
Windows XP
Windows Vista
Windows Server
Windows 7

Additional Requirements: Outlook 2010 or 2013 (32 / 64 Bit)

POPULARITY

Total Downloads: 220

Downloads Last Week: 0

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User Reviews

5/5

1 User Votes

Even good for enterprise users
ParanoiaJoeApril 30, 2015
Pros
- Integrates seemless in Outlook 2010/2013 - Works perfectly in combination with Exchange - May be controlled by Microsoft Policy Manager - Easy to use - even by normal users
Cons
- Well - it's not for free if you consider this a con - We would wish to have a solution for document encryption as well
Summary
Very good product for the price. In our company we do cover desktop users and laptop users from remote. Low effort necessary for implementation and low maintenance footprint

Developer’s Description

By Giegerich & Partner

Protect your E-mails with encryption.

Gpg4o for Windows

Editors’ Review

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Atomic VBA Password Recovery

Pros

Cons

Gpg4o for Windows

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Even good for enterprise users

Developer’s Description