ShaYong SY.Filer by: ShaYong .NET Framework 4.5.1 This package targets .NET Framework 4.5.1. The package is compatible with this framework or higher. 776 total downloads last updated 5/31/2019 Latest version: 1.0.0 SY 文件操作帮助类，可以快速运用需要文件操作的应用中 SY.EmailHelper by: ShaYong .NET Core 3.1 This package targets .NET Core 3.1. The package is compatible with this framework or higher. 498 total downloads last updated 7/6/2021 Latest version: 1.0.0 基于.NetCore3.1的 包含IMAP、POP3、Exchange、SMTP协议的跨平台收发邮件系统