Letters sealed with wax like in this painting by Cornelis Norbertus Gysbrechts are quite rare today.
But since the rise of the internet, even paper letters have lost their dominance in written communication. Today, we use email. And the vast majority of them are sent without an "envelope", like a modern post card.
There are several good reasons to use private communication. The encryption technology is also now available for everybody. Probably the biggest reason why email encryption hasn't gained more ground is a simple matter of convenience. Mailvelope wants to make a contribution here and offers a solution for users of webmail.
Mailvelope is an open source project hosted on GitHub (see list of contributors). The developement process is completely transparent, we constantly conduct security audits and publish reports whenever possible.
Mailvelope is based on the work of the following open source projects which should be acknowledged:
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License version 3 as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.