Hello,
Mail Merge remains your best option. It provides the most flexibility. You can use a macro to make it easier to use.
Create your Word document as a letter merge main document with the appropriate merge fields. Once it is complete, under the mailings tab change the type to a normal, non-merge, document.
Record a macro changing it to a letter merge and attaching your data source. Name the macro AutoNew and save it in your document, not in the normal template. Have the macro then trigger the find recipients box. Stop your macro with that box open.
Change it back to a normal, non-merge, document. Save it as a .dotm template. Use that template to create your documents. You can complete the merge with the new document that is created and discard that document.
This forum is a user-to-user support forum. My name is Charles and I am a fellow user with decades of experience using Microsoft Word. I have written extensively on using Word and have authored help articles on the Microsoft site.
I hope this information helps.
Please let me know if you have any more questions or require further help.
You can ask for more help by replying to this post (Reply button below).
Stay well