I'm using the Note's & AbiWord applications to create/store any text as and when needed. From there text to be used in a convo is cut and pasted into conversations and vice versa for the reverse.

In my early days of ownership a draft folder facility was desired but there's always an alternative way to reach the same end goal. Hence i do the above, it's just as easy and versatile be it convo text or any kind've text.