MS Windows Server 2008 32/64 bits | 2008 RS 64 bits | 2012 64 bits Linux 32/64 bits for Intel architecture
MS SQL Server 2019 | MySQL
Integration with the main email servers including MS Exchange as well as any other that supports the SMTP protocols | POP3 / IMAP or its safe equivalents.
Google Chrome | Mozilla Firefox | Safari | MS Internet Explorer
Apple iOS | Android | Windows Mobile