Maxprog today announces MaxBulk Mailer 8.5.5, an update to their popular bulk email software and internet marketing tool for macOS and MS Windows. MaxBulk Mailer supports plain text, HTML and rich text formats, including optional plain text alternative and attachments. It includes document and contact management, support for multiple lists and remote lists, multiple accounts with POP and ESMTP authentication, and much more. Version 8.5.5 offers several interesting new features and improvements.