Lockbin is a web application for sending private email messages and files. People use it to send things like credit card numbers or confidential information.
Encrypting email with Encipher.it is a simple way to protect your sensitive data. You can encrypt emails or text messages and only the recipient can decrypt it with correct password. Encipher.it integrated with Gmail and many other web applications.
Sending confidential information such as passwords, account information and other sensitive data in emails and IM is not necessarily safe. That data is typically stored with remnants of the bits in places you don't need it to be.
The official website is no longer accessible and the iPhone app has been removed from the App Store.