MessageLock for Outlook is an email encryption plug-in for Microsoft Outlook 2003, that enables you to easily send encrypted messages and/or compressed attachments. It can transparently encrypt outgoing messages, if the option is selected from the newly added toolbar buttons, and automatically keep track of passwords, so you can use an individual password for each recipient, without having to re-enter it every time you send an encrypted message.
Your private email message are not so private. When attached to an email, your files (pictures, documents, videos, etc) and message may as well be printed on a postcard as they travel across the internet to their intended recipient. History has proven that unsecured messages can be intercepted, redistributed, published, and tampered with, sometimes with serious consequences.
Introducing MessageLock(TM) by Encryptomatic llc - Quite possibly the worlds easiest to use sender-to-recipient email security solution. MessageLock provides 1-click encryption of email messages and attachments within Microsoft Outlook, combining strong U.S. Govt approved AES-256 bit encryption with the nearly universal compatibility of the Zip file utlity. MessageLock delivers encryption and compression for your message and/or file attachments, protecting your data while it is traveling across your intranet and the internet.
MessageLock gives you a choice of encryption methods, from super-strong AES-256 bit, to AES-128 bit, and the weak but highly compatible Zip-2.0 algorithm.
To use MessageLock, all you do is associate an email address with a password, a process that takes just seconds. Or, just go ahead and send an encrypted email -- if MessageLock cant find the password to use, it will ask you for a password and then remember it for the next you send to this email address.
If MessageLock is installed at receivers end, the message can be decrypted immediately upon receipt and displayed as a regular message. The only difference is a single line of text at the bottom of the message that alerts the reader that this message was transmitted securely.
If the receiver does not have MessageLock, they can still decrypt the zip file if they have the password, and any zip utility that supports the encryption method used. WinZip 10.0 or the free TugZip utility can both decrypt AES-256.
Download a fully functional trial and see how easy MessageLock is to use.

The license of this software is Free Trial Software, the price is $49.99, you can free download and get a free trial.