"Save as draft" option missing from the default message app?

I have a Samsung galaxy Y mobile phone, and I have just discovered that the option to save messages as draft is completely missing in the app named "Messaging" that I got pre-installed. I am really shocked, as this is a very basic and common feature in the cheapest phones today. My Question is: What kind of design/usage philosophy/idea/concept/thought is behind this? Also, is their any good alternative to this pre-installed app which has the option to save drafts?