--- title: gpg4o Reviews meta_title: 'gpg4o Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter reviews by the users' company size, role or industry to find out how gpg4o works for a business like yours. date_modified: '2026-09-28' parent_category: name: Email Security url: https://www.g2.com/categories/email-security ---

gpg4o Reviews & Product Details

gpg4o is IT-Security that helps protect your sensitive mail content in Microsoft Outlook 2010/2013/2016 and is suitable for both private and enterprise usage. gpg4o is based on OpenPGP encryption by using GnuPG(GPG) and is compatible to other OpenPGP based implementations like enigmail, Symantec Encryption (former PGP Desktop) and Symantec Encryption Gateway (former PGP Universal), GPGMail, KMAil and others.

Seller

Giegerich & Partner

Discussions

gpg4o Community

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Pricing

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Categories on G2

Email Encryption

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