WHAT IS THE DIFFERENCE BETWEEN A PRO LICENSE AND A FREE LICENSE?
While the Free license allows you to set up the maximum of two accounts in the application, it is possible to add an unlimited number of accounts with the Pro license. The Pro license also enables you to use eM Client for commercial purposes. Commercial use is any activity that helps you make profit, the Free license therefore cannot be used in company settings or on personal computers for business correspondence. Pro users also gain access to the dedicated support system and to the licensing manager. The support options are fully described
here.