September 25, 2023 3:43 am

Email Encryption End-to-End

Developer’s Description

Email Encryption End-to-End
‘Email Encryption End-to-End’ is designed to make it easy to send and receive encrypted email securely. It can be used to encrypt a message to be sent via any email program (including Outlook Express) and any webmail that supports attachments (files attached to a message). The encrypted message consists of a text message (up to 60 KB in size) plus, optionally, an appended file of any type (up to 1.93 MB in size). The message (including any appended file) is encrypted, and is attached to an ordinary email message, before it leaves your PC to go to the mail server, and it remains encrypted during transmission to the recipient’s ISP and while being downloaded to the recipient’s PC. Thus the message is encrypted “end-to-end”, and, if intercepted anywhere between your PC and the recipient’s PC, cannot be read. The program uses a symmetric key method; thus the key used for decryption is the same as the key used for encryption. It is bilingual English/German and works with text in languages other than English


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When you want to make sure the emails you send and receive are absolutely secure and won’t be read by unauthorized users, you do everything in your hands to achieve this level of protection. Email Encryption End-to-End encrypts the message you want to send using a symmetric key encryption method. From the moment the email leaves your computer until the moment it reaches its final destination (the recipient), it will be encoded and won’t be read by anyone even if it was intercepted. Attaching files is supported as well.


When you launch the installer you’ll be prompted to pick installation language first. Then the installation wizard will guide you through all of the steps required to complete the installation. There are no difficult settings in any of them.

The setup package doesn’t include any types of malware or additional 3rd party software so it’s completely safe to install it. See report.

Supported operating systems are Windows 2000, XP, Vista, 7 and 8.


At the top of the program’s window there are two radio buttons, one for when you want to encrypt a message and one for when you want to decrypt one. The rest of the interface consists of the message textbox located at the top (where you enter your message), a few buttons below it with useful functions regarding the textbox (enlarge it, save the text as a file, etc.), a field for entering the encryption key, a field for appending a file to the message, a field for defining the output destination of the encrypted file, and some buttons at the bottom that perform the encryption process, view an already encrypted file and compare the randomness of the plaintext and the ciphertext.


The program is easy to use and understand by the average user, who only has to enter his message, attach a file to it if he wishes to do so, enter an encryption key of his choice (which will be used for decoding the message too) and then just encrypt the message.

The encrypted message will be saved as a binary file, which the user will then send as an email attachment. The recipient, being aware of the key you used (you must somehow let him know of it, or hint to it) opens EEE and loads the ciphertext file in it, start the decipher process and view the decoded text. If an appended file exists, you’ll be asked to pick a directory in which you want to save it.

EEE has a feature which compares the randomness of the plaintext and ciphertext. After encrypting a message, the corresponding button will be activated and by clicking on it a new window will open with two illustrations of the randomness in the plaintext (left) and the ciphertext (right). The randomness measure on top of each illustration gives you an insight of the randomness there is in the values of the two files’ bytes (this measure takes values from near 0 to near 1, with a higher value indicating increased randomness).


There is a limitation on the size of the text you can encrypt (up to 60kb) and to the file you can append (up to 1MB).

An intuitve software solution that you can rely on to encrypt your email messages, as well as their attachments, no matter if you use an email client or webmail

Email Encryption End-to-End


Review by Andrei Fercalo on August 12, 2014

Email messages are not always so secure, as they can be intercepted by others and read. A good way to prevent this is to encrypt your messages into a file and send it as attachment, as someone intercepting such a file would have a hard time deciphering it.

Email Encryption End-to-End is a reliable piece of software that can help you encrypt your messages into ZIP archives and use those as attachments for your emails.

Handy tool for email encryption

The application can process certain texts and messages, then create a ZIP archive that contains your encrypted text. This file can then be used as an email attachment and sent to whoever you need, as those that will try to intercept your connection will have a hard time trying to discover the contents of your file.

In addition, you can select the cipher key, so that any sent message will be encrypted with it. This way, you can subtly add the cipher key and encrypted file in your emails, as the key can be anything you want, as long as it is long enough to meet the length requirements.

Reliable file encryptor and decryptor

Email Encryption End-to-End can be used to both encrypt and decrypt files containing coded messages. By simply choosing the file that needs to be decrypted and entering the correct cipher key, you can extract the messages from your attachments.

Furthermore, you can save your messages as TXT files or load them directly into the required fields in just a couple of clicks.

A robust text encryption program

To conclude, Email Encryption End-to-End is ideal for those that need to encrypt their messages when sending emails, as they can encrypt their real message as a ZIP archive, add it as attachment, then insert it into their email, along with a misleading message.

Email Encryption End-to-End enables you to send and receive encrypted e-mails.

It can be used to encrypt a message to be sent via any desktop email program or webmail that supports attachments. The encryption happens before it leaves your PC and goes to a mail server.

Swiss privacy

Data security and neutrality

ProtonMail is incorporated in Switzerland, which means all user data is protected by strict Swiss privacy laws.

End-to-End Encryption

Automatic Email Security

We use end-to-end encryption and zero access encryption to secure emails. This means even we cannot decrypt and read your emails. As a result, your encrypted emails cannot be shared with third parties.

Your data, your rules

Protect your privacy

ProtonMail is an email provider/service that respects privacy and puts people (not advertisers) first. Your data belongs to you, and our encryption ensures that. We also provide an anonymous email gateway.

Open Source

Free Secure Email

We believe email privacy should be available to all. That’s why our code is open source and basic ProtonMail accounts are always free. You can support the service by upgrading to a paid account.

Easy to Use

Security without the hassle

ProtonMail can be used on any device without software install. ProtonMail secure email accounts are fully compatible with other email providers. You can send and receive emails normally.

Calendar & Drive

Security with Productivity

Proton Calendar and Proton Drive extend privacy to your events and documents. Our secure email service is fully integrated with an encrypted calendar, enabling you to keep your events private as well.

what is a license key for windows?

A product key is a 25-character code used to activate Windows and help ensure that it is not installed on more PCs than the Microsoft Software License Terms allow.

What is a PC license key?

A license key is a database that verifies access to a licensed software application. This type of software security prevents software theft. And allows organizations to protect their software from being copied or shared with unauthorized licensed users.

How do I install programs?

Locate and download a .exe file.
Click on the .exe file and double-click it. (It will usually be in your Downloads folder.)
A dialog box will appear. Follow the instructions to install the software.
You will be able to install the software.

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