Step 1:

Go to mailings option and choose Letters

Step 2:

Go to select Recipients option

Step 3 :

Add Recipients to the mail merge database

Step 4:

Add and Deleting mail merge fields

Step 5:

Inserting mail merge field in your word document

Step 6:

Preview your mail merge letters

Step 7:

Correcting Errors in mail merge field

Step 8:

Finalizing your mail documents.