Mail merge using Google Docs. 

To perform a mail merge in Google Drive, you need to have the following:

1. A Google Sheet that contains the data you want to merge into the letter.

2. A letter template in Google Docs that has merge tags using a field info format. Put a merge tag wherever you want personalised information to go. Try and match these tags to the column headings in your spreadsheet to speed up AutoCrat configuration.

3. A folder created in your Google Drive to save your Merged Documents.