First, pick which web browser you use for instructions on how to install the appropriate extension:

Mozilla Firefox

First, install the extension in Mozilla Firefox. You will see the below prompt:Firefox Allow Prompt

Click “Allow” and the plugin will install.

Google Chrome

First, install the enMailing extension for Google Chrome. You will see the following prompt:Chrome Allow

Click “Add” and the extension will install.

Internet Explorer

The Internet Explorer extension has been cancelled due to instability. I recommend using Chrome or Firefox on PCs for the time being.


Regardless of which browser you are using, you will now see an enMailing icon on your browser toolbar, like this example from Firefox:

Firefox Toolbar

Click that icon, and the following dialog will pop up:

Enter your enMailing username and password. Also specify a name for this device. It’s a good idea to use a name that you will be able to recognize in the future. By default, each browser will populate the field with the name of the browser, but it’s a good idea to add detail to help you remember which computer you are authorizing. For example, you may want to name the browser “Firefox (home)” or “Firefox (work)” depending on the location of the computer. Giving a descriptive name will make it easier for you to de-authorize the device in the future should you ever want to. After entering your username, password, and the device name, click “Authorize.” If your username and password were correct, the browser will become an authorized device:

The “Default Group for Encrypting” setting allows you to set the group for which you will encrypt messages. This is easy to change later, but you can change it now if you want to. You are now ready to encrypt and decrypt messages in your browser.

enMailing works seamlessly with Gmail, Yahoo! Mail, Outlook.com, Hotmail, Outlook Web Apps, Mail.ru, and GMX. Due to the integration that the enMailing extension provides, using enMailing to encrypt messages with any of these sites is very easy. If you want to encrypt messages on another website, that’s also very simple.

Integrated Webmail

As you view your email messages on one of the supported sites, enMailing will automatically decrypt any encrypted messages that you open.

When you’re writing a message, you will notice some new controls on the compose window:

Gmail compose

The enMailing icon below the Send button is a toggle that allows you to indicate whether you want enMailing to encrypt the message before sending it. You can just toggle that button on, type your message as normal, click Send, and enMailing will encrypt the message before sending.

The drop-down box next to that button that says “Everyone” in the image above is where you can select which group you want to encrypt this message for. You can read more about enMailing groups here.

The exact placement of these buttons will vary depending on the webmail you’re using. This example is from Gmail, but you will find these controls in the same places you see the controls for whichever webmail you’re using.

If you’re replying to a message, you will see these same controls. If the message you are replying to was encrypted, the button to encrypt your reply before sending will automatically be pressed.

If you only want to encrypt a portion of your message, select that text and right-click it. You will see this context menu:

firefox context

Just click “enMailing” on your context menu, then click “Encrypt Selection” and the selected text will be encrypted. if you click “Encrypt All”, then all of your reply will be encrypted.

If you want to decrypt a part of your draft message that you’ve encrypted, you have two options. First, you can right-click on the encrypted text, click “enMailing”, and then click “Decrypt”. Your other option is to hold the “alt” key on your keyboard and left-click the encrypted text. Either way, the text will be decrypted and you will be able to edit it once again.


While it’s not possible for enMailing to be fully integrated with all web-based communication, there are some general methods you can use to encrypt and decrypt messages on non-integrated sites.One way is to hold the “alt” key on your keyboard and then left-click the text you want to encrypt or decrypt. If you click on encrypted text, enMailing will decrypt it. If you click on unencrypted text, enMailing will encrypt it. Easy as that.Another way is to right-click on the text you want to encrypt or decrypt. You will see the following context menu:firefox context

Under the “enMailing” context menu item, the options will change depending on what you right-clicked on. If you right-clicked on encrypted text, you can decrypt that text by clicking “Decrypt” on the context menu. If you right-clicked on unencrypted text, you can encrypt that text by clicking “Encrypt All”. If you had text selected, you can encrypt just that selected text by clicking “Encrypt Selection”.

Using these options, you should be able to encrypt and decrypt messages across the Internet.