As you may know, REDDCRYPT is based on OpenPGP. As the creation and exchanging of certificates is a major obstacles for many users, REDDCRYPT was developed to handle the complete certificate management automatically in the background.
Recently we have been asked what would happen to the received emails should the REDDCRYPT service be shut down at some point in the future. Although we do not plan on shutting down, the question is valid.
Our answer: It is now possible to export and download one’s private key. With the private key you are able to decrypt any received email with standard OpenPGP tools without one of the REDDCRYPT applications.
We have documented the steps necessary to export one’s private key and decrypt one’s emails in the knowledge base: https://www.reddcrypt.com/en/knowledge-base/e-mails-mit-standard-openpgp-tools-entschluesseln/