I'm still trying to arrange the SMS as threads in GMail.

Would it be possible to use different text templates for incoming and outgoing messages?

In my case, I'd like to use this kind of templates:
- Incoming: SMS - $(SENDER)
- Outgoing: SMS - $(RECEIVER)

This way all messages to/from the same number will be recognized by GMail as being part of the same thread and could be seen like in the Conversations application.

Another super duper addition could be using Contacts names in the templates so it wouldn't matter what number a contact is using, all the messages would be sorted in one conversation (that's something the Conversations application can't do and would be very useful).

Edit: Just realized that it doesn't matter who's the sender or the receiver, the parameter $SENDER always is filled with the contact's phone number.