There is only one MaxBulk Mailer software. It is the product you can download here. MaxBulk Mailer can be registered as Standard or as Pro though. It all depends on the serial number/activation code you have purchased:
A standard serial number activates the software and removes all the trial version limitations such as the unregistered footer added to your outgoing messages and the deliveries per session restriction.
A Pro serial number go a step further by also activating a few advanced features. You will find the full list of those Pro exclusive features here.
You can upgrade from MaxBulk Mailer Standard to MaxBulk Mailer Pro at any time here making sure you select the reference that applies to the version you currently have. You will receive a new serial number to convert your Standard version into a Pro version. Use the 'MaxBulk Mailer > Upgrade to Pro Version' menu on Mac OS X or the 'Help > Upgrade to Pro Version' on Windows to enter your new serial. More information on this here.
MaxBulk Mailer is a full-featured and easy-to-use bulk mailer and mail-merge software for macOS and Windows that allows you to send out customized press releases, prices lists, newsletters and any kind of text or HTML documents to your customers or contacts.
MaxBulk Mailer is fast, fully customizable and very easy to use. MaxBulk Mailer handles plain text, HTML and rich text documents and gives full support for attachments. With MaxBulk Mailer you will create, manage and send your own powerful, personalized marketing message to your customers and potential customers.
Thanks to its advanced mail-merge and conditional functions you can send highly customized messages and get the best results of your campaigns. You also have support for international characters, a straightforward account manager with support for all type of authentication schemes including SSL, a complete and versatile list manager, support for importation from a wide range of sources including from remote mySQL and postgreSQL databases.
MaxBulk Mailer is a software tool that you purchase once, no need to pay on a per-email basis to submission services!