Maxbulk Mailer mail document windows are split into five parts by tab panels labeled: Message, Recipients, Settings, Preview and Delivery:

When creating your mail documents you will likely go thru them in this order. First you create a message and add attachments if needed, then you select, create or import your recipients list, you set up your mail account and preview your document to make sure it will show up properly to recipients. Then you are ready to send a test mail to yourself switching to Test Mode ('Message | Test Mode' menu) and then send out your mail to your recipients. Use the Delivery panel to find out how your mail server is behaving. Once delivery is done you will receive a report by mail.