How to Encrypt Email Using cPanel in Linux Reseller Hosting?

cPanel supports email encryption. Cpanel email encryption protects your email messages from reaching unauthorized recipients. When a message is encrypted, the recipient needs the key to decrypt the message. Otherwise, the message will not be readable to the user.

It enhances the privacy and security of your messages by encrypting them using the “public key” and allowing the intended recipient to make them readable (decrypted) via the “Private Key.”

GnuPG is publicly-available, open-source software that leverages the public key cryptography scheme. It has two types of keys as the public and the private key to enrich the security of email with sensitive information. It allows for the execution of OpenPGP or PGP.

Step 1: Login to the cPanel
Step 2: Under the email section click encryption

Once you opened encryption , you will have a below option to enter

1) Enter your name in "Your Name" text box.
2) Enter your Email ID in the “your email” box.
3) Enter a nickname or comment in the next text box.
4) Enter a strong password. You can also use Password generator for creating tough password.
5) Enter the time frame for your key.
    Note: your password will only be valid in the time stated in the “expiration date” text box. Set the expiration dates as follows: 1y 2w 3d for (1 year 2 weeks and 3days)
6) Under the "key size" drop-down you have two options 2048 or 4096. Select a key size which you needed. The larger key size is more secure the key than the smaller one.
7) Click "generate Key" to create your key.

Step 3: Import the key

1) Once the key is successfully created, You can import them to the cpanel.(Note: you cannot import the private key)
2) Click on the “Import Key” button
3) A new interface will open, in the text box “paste the GPG or PGP data” copy your public key.
4) Make sure your public key includes the header and the footer rows. Scroll down and click on the “Import” button to import the specified  key.
5) You have successfully encrypted your email check in the cPanel. 

Step 5: View or delete the key

1) Navigate down the encryption interface to access the list of activated keys.
2) To view the public or the private key click the “View” button. If you are needed to delete either of the GnuPG keys click on the “delete GnuPG” button of the key you want to delete. When deleting any key, you will be asked to  confirm the task, once you click “yes” the key will be automatically deleted.