[UPDATE] ThreadSMS v1.13

Just remember that ThreadSMS is a funy chat-style SMS communication tools in S60. You can read and write SMS in a cool user interface like Msn Messager.It gives users a handy follow up screen to track the sent and received sms messages to and from one particular contact.It also supports emoticon ! It has many other cool features.

The new update (1.13)included some new features and fixes other ones :

-When incoming SMS received, ThreadSMS will pop up. Replace the native SMS app.
-Send FlashSMS directly.
-Optimize the code much to cut down the SIS's size and run-time memory cost.
-Fixed the "multi-conversation one contact" and several other issues.
-Add setting page to set the count of loading SMS and whether pop up .

Download it!

* Full version-No limit when using.
-The full version will be sent to you in 6 hours

Trial version-You can't use the phonebook.
-Every message will be add '-sent by ThreadSMS' to the message rear.
-You only can load 5 messages.
-It's a unsigned version, you need to self-sign it with your IMEI.