Email without prying eyes
Now with new enterprise features!
Enterprise grade mail encryption for ALL!
Made by a company that fits to you
Giegerich & Partner covers the entire livecycle of IT Security solutions from planning over implementation to constant maintenance and change management.
More than 24 years of experience in developing software products which run 24 hours a day, seven days a week taught us a lot about software quality.
Easy and safe encryption of Emails. Preserve the privacy of your electronic correspondence with gpg4o or gpg4o Free.
The award of the quality seal by TeleTrusT happens exclusively to German companies that provide trusted security solutions with no hidden additions.
gpg4o immune against latest attacks
Efail - safe with gpg4o
gpg4o 5.3 is now available
gpg4o® Free is Now Available
Free E-mail Encryption for Private Users!
Professional article email-encryption
iX-theme: "OpenPGP for Companies. Guidelines for efficient email encryption" from Hans-Joachim Giegerich
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