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.