You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today.

Enhance your email provider with end-to-end encryption. Secure email communication based on the OpenPGP standard.

Mailvelope adds missing encryption and decryption features to the user interface of common webmail providers.

It supports the PGP encryption standard (OpenPGP, GPG) and is compatible with other PGP applications. Encrypt files on your hard drive with Mailvelope and send encrypted email attachments.

Mailvelope makes integrating security into your workflow seamless.

Add to Chrome

An Envelope for Email

Letters sealed with wax like in this painting by Cornelis Norbertus Gysbrechts are quite rare today.

But the classic paper letter has now also been replaced by email. What very few people are aware of, however, is that the majority of today's emails are sent without the "protective envelope" that is still common with paper letters, and are therefore more like a modern postcard.

A remedy in the form of secure encryption has been available for many years, but is rarely used for email because of its complexity.

We asked ourselves the question: How can the users of webmail protect their communication adequately?

Introducing Mailvelope

Mailvelope is an open source project under a free license that is hosted on GitHub. The development process is not only fully transparent, but is also supported by regular security audits, which we publish as far as possible. For more details, see GNU Affero General Public License.

The development of Mailvelope started in early 2012 by Thomas Oberndörfer. Since August 2012 a first version is available in the Chrome Web Store, the source code is published under AGPL3 license on GitHub.