Best MessageStorer has an interface that mimics the built in messaging application in your Symbian phone. What this means is that using it is a snap since it should be familiar to Symbian users and you can start using it without reading the instructions.

click to enlarge
Opening up the application shows all the folders in your messaging application albeit with different icons. Any mailboxes that you have configured are also displayed so emails and MMS messages can also be exported with this application.
Once you open up any folder, the messages are displayed. One niggle I had with the application was that use of the pen and directional keys was required to select multiple messages from a specific folder. For phones lacking the pen button, this application would be too cumbersome to use.

click to enlarge
After selecting the messages, pressing the left softkey displays a context menu that allows you to save the messages in a format of your choice. You can choose between text and csv. You can also choose to save the file in your phone memory or via a memory card. You can even open this file in your
PC and view your messages. To save time the developer have added a useful feature where you can select the inbox and store all of its messages. A couple of other options are provided that allow you to filter and sort the displayed messages.