Mail Merge in Tamil.
Mail merge lets you create a batch of documents that are personalized for each recipient. For example, a form letter might be personalized to address each recipient by name. A data source, like a list, spreadsheet, or database, is associated with the document.

Steps to perform a mail merge:
Prepare data of names and addresses in Excel data sheet for mail merge.
Then, in a new blank word document start mail merge.
Insert a merge field.
Preview and finish the mail merge.
Save your mail merge.