Merge PDF in Batch

Hi Team,

I have just joined to Adobe community. I have one small business case and i need community help to sove it.

We have 5 invoices in 5 different PDF.  and one covering letter of invoice in other pdf file.

Invoices PDF file names

A.pdf

B.pdf

C.pdf

D.pdf

E.pdf

Covering letter pdf file name - Z.pdf

So, we need to add the covering letter in all 5 invoices in one GO. (Insert/combine)

Output file would be like as below.

A+Z.pdf

B+Z.pdf

C+Z.pdf

D+Z.pdf

E+Z.pdf

Thanks

Rajesh Arya