Mail merge with attachments for Gmail, Google Sheets

A free spreadsheet designed to mail merge with the option of several attachments per message. Allows custom fields, CC and BCC. Add your attachments from Google drive and provides a tool to list them. Link to the file: https://docs.google.com/spreadsheets/d/1IEc--cVLGhsAkWGcvexowYirbAk2acIqI1_kiCjWBsw/copy