Features:
- It's free. Who doesn't like free stuff?
- Sends messages via the 3G data connection, meaning your outgoing SMS costs you nothing.
- Interfaces with your phone's contacts list.
- Connects directly to Google via SSL to send your message, no man-in-the-middle servers that could potentially harvest your Google Account password.
- Signature support.
- Send to multiple recipients at once.

Easy SMS is completely open-source! Want to have a look? Just click through to the website for the download.

Requirements:
- Windows Mobile Smartphone (aka Windows Phone); software has been tested on versions 6, 6.1, and 6.5, but the program may work with other versions.
- .NET Compact Framework 3.5.
- A Google Voice account.
- 3G or WiFi connectivity.
- If your 3G plan charges by the kilobyte, be sure to keep track of your usage; this program uses very little bandwidth, but don't try to blame data charges on me.
- You must abide by the Google Voice terms of service when using this program.

Google has a bad habit of changing the way stuff works without letting people know. If you find that this program suddenly stops working, it could be because Google changed a setting and broke the way this program works. Check the blog site for info on known issues and patch releases. I'll try to post here with that stuff too.

Known Issue:
With this version, if you send a message and the software reports "Message(s) Sent" but it doesn't actually go through, you are experiencing a known issue. When this happens, Google Voice receives the SMS but doesn't deliver it, instead returning an error that indicates message wasn't sent. This version doesn't understand what the return code means, so instead the program thinks that everything went well and tells you the messages sent. Version 1.2 will fix this issue, and I am working on finishing it as fast as I can.

If you like this project, please consider donate to the developer.

Update Description:
v1.1:
- NOTE: This version and all future versions requires the .NET Compact Framework 3.5.
- Smart contact selection. Start typing a name or number, and Easy SMS will start narrowing your choices for you.
- Update checking and notification. A very low-bandwidth way of keeping your software up to date.
- Debug mode. Having issues? Enable Debug Mode in your settings and let me know of the error details, maybe I can help you out with it.
- Some small bugs have been fixed.
- Support for most special characters in message text.
- Public source code (click through to my website).