You can send up to 500 emails a day, this is the highest you can get for a free product on the market right now. With Mail Dog you can send a personalised mail campaign with just a few clicks. - Switch your compose box to "Mass Mail" mode - Link your email with a Google's Spreadsheet - Compose your email with variables from the spreadsheet above - Click Send and Enjoy! It's that simple. We will provide more helpful features very soon. If you have want a feature, let us know at email@example.com, we would love to hear from you.