Email encryption doesn’t have to be complicated!

Too complicated, too elaborate, uncomfortable to handle – The reasons for not using S/MIME or PGP are diverse.

With REDDCRYPT these arguments are a thing of the past as everyone is capable of encrypting their email communication from now on.

This is how REDDCRYPT works

REDDCRYPT automatically encrypts your emails on your device before they are being sent. Thus, your emails and their contents remain private. This way you can securely send sensitive information via email.

You authenticate yourself on the REDDRYPT app with your email address and a password. A key pair comprising of public key and private key is automatically generated. Your private key is then encrypted with a password hash and uploaded to our servers together with your public key.

Sounds too complicated? Don’t worry as most of this happens in the background. You only need to enter your email address and choose a password to generate the key pair.

Writing an email happens locally on your device. Why is this important you may ask? Because only you can read the contents of the email as the process happens locally. Before sending the email it is automatically encrypted on your device.

If the recipient is also a REDDCRYPT user, the encryption takes place with the public key of the recipient. This means that you don’t have to take action, as everything happens automatically in the background.

If the recipient is not a user of REDDCRYPT yet, you will have to define a passphrase for this first mail with which the recipient can decrypt the mail. To make sure that only the intended recipient can read your email. you can disclose this passphrase to the recipient e.g. via sms or phone call.

To be able to read the email the recipient authenticates on the REDDCRYPT app, as well. If he already has access and the email has been encrypted with this public key, then the recipient can open, read and answer your mail right away. If he didn’t have access yet, he will have to generate his own key pair to through his email address and a chosen password. Afterwards he can see your encrypted email which can be encrypted by entering the passphrase you have disclosed to the recipient earlier (e.g. via sms or phone call).

This passphrase is only necessary for the decryption of the first email. With every email that comes afterwards the encryption and decryption process takes places automatically in the background. Highest user comfort and highest security – this is REDDCRYPT.

You would like to know how the technology behind REDDCRYPT works in detail and how we make sure that only you can read the e-mails? In this case, you may want to look at our technical documentation of the functionality of REDDCRYPT

Our mission: more digital security for everyone

REDDCRYPT is a brand of REDDOXX GmbH. Our company was founded in 2005 in Kirchheim unter Teck (Baden-Württemberg). Our focus in on email management and IT security. Since the company’s foundation we have devoted ourselves to email as a medium and offer commercial solutions for anti-spam, email archiving and email encryption including digital signature.

For over a decade we have been told that ’email encryption is way too complicated’, that ‘nobody uses that anyway’ and that ‘signature management is too complicated’. Since 2018 we have been busy conceiving a solution that is the complete opposite of complicated: a solution that is easy to use while not compromising security. With REDDCRYPT we have created this solution and are delighted by the ever-expanding user base.

Here you can find out more about our company and our mission.

REDDCRYPT apps – email encryption on every device

We provide different applications with which you can encrypt and decrypt your emails independent of your device.
Because we want everyone to protect their privacy and private data, we offer the web application for free.

Web app

With the REDDCRYPT Web App you can encrypt and decrypt your e-mail on any device - without certificates

With the web app you have the most important application available for free. Why is the web app the most important application? Because it is device independent. The web app works on a Windows PC the same it would on a system running Linux as well as your smartphone.

We provide you with the web app for free because we want to offer you the chance to protect your private data whenever you want and wherever you are.

Register for free

Additional apps

REDDCRYPT is not only available as a Web app

Plugin for MS Outlook

E-Mail in Outlook verschlüsseln - mit einem Klick

Smartphone apps

Windows application

REDDCRYPT App for Windows
App Overview