ship with Outlook Privacy Plugin and receive user in Microsoft's mail client encrypted mail to the OpenPGP standard. The free plug-in works with Microsoft Outlook 2010 and-2013. For Outlook Privacy Plugin starts working, Microsoft .NET Framework 4.5 and Gpg4win must be installed on the computer. Once integrated, the plugin to receive and send encrypted emails and file attachments. Support for PGP-MIME and OpenPGP blocks complete the free extension. Outlook Privacy Plugin makes Microsoft Outlook compatible with the linzenzfreien OpenPGP encryption technology. According to developers, HTML emails are not officially supported by the plugin, which will however be subject to change in a future version.