Mail merge in Pages ???

In all my years of computing, I never had to even think about mail merging, but now in my nascent business, I find that I have a need for it.

But apparently it's not to be found in Pages! Arghhhh.

Having got over the initial pain of finding this out, I need to use another program to do my word processing - can anyone suggest one?

Lastly, shall I uninstall Pages and get rid?

It's possible to set the computer back to an earlier software version of Pages?

The version I have is Pages 09...

Nothing in my applications says iWork 13.

Maybe I'm doing something wrong in that case (oops!)

What conditions do I have to satisfy to get the mail merge from being greyed out?

I have a single page document open, and when I go to merge, it's exactly that - greyed out.

Any ideas what I might be getting screwed up?

I'm drawing blanks here - I can't find anything (easily) that explains how merge works.

At times I find references to Numbers - a search for mail merge on Goggle just brings up references to Word and Pages in a general sense.