The mail merge helps to generate form letters by combining content of one document with content of address. In a situation where a letter is to be sent to address of many persons then mail merge is used.
The steps for mail merge is as follows;
Step 1. Create a main document and type the letter.
Step 2. Select data source document.
Step 3. Insert merge field in the main document.
Step 4. Select Finish and merge button.