C#发送邮件示例，不需要进入网页版邮箱，利用exe文件发送信息至邮箱中，可用于企业，个人学习参考
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资源文件列表
QFSendEmail/.vs/SendEmail/v15/.suo , 33280
QFSendEmail/.vs/SendEmail/v15/Server/sqlite3/db.lock , 0
QFSendEmail/.vs/SendEmail/v15/Server/sqlite3/storage.ide , 471040
QFSendEmail/.vs/SendEmail/v15/Server/sqlite3/storage.ide-shm , 32768
QFSendEmail/.vs/SendEmail/v15/Server/sqlite3/storage.ide-wal , 65952
QFSendEmail/Form1.Designer.cs , 15733
QFSendEmail/Form1.cs , 5915
QFSendEmail/Form1.resx , 5814
QFSendEmail/Program.cs , 468
QFSendEmail/Properties/AssemblyInfo.cs , 1231
QFSendEmail/Properties/Resources.Designer.cs , 2858
QFSendEmail/Properties/Resources.resx , 5612
QFSendEmail/Properties/Settings.Designer.cs , 1109
QFSendEmail/Properties/Settings.settings , 249
QFSendEmail/SendEmail.csproj , 3504
QFSendEmail/SendEmail.sln , 907
QFSendEmail/bin/Debug/SendEmail.exe , 15360
QFSendEmail/bin/Debug/SendEmail.pdb , 24064
QFSendEmail/bin/Debug/SendEmail.vshost.exe , 11608
QFSendEmail/bin/Debug/SendEmail.vshost.exe.manifest , 490
QFSendEmail/obj/Debug/DesignTimeResolveAssemblyReferences.cache , 1209
QFSendEmail/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 6175
QFSendEmail/obj/Debug/SendEmail.Form1.resources , 180
QFSendEmail/obj/Debug/SendEmail.Properties.Resources.resources , 180
QFSendEmail/obj/Debug/SendEmail.csproj.CoreCompileInputs.cache , 42
QFSendEmail/obj/Debug/SendEmail.csproj.FileListAbsolute.txt , 1686
QFSendEmail/obj/Debug/SendEmail.csproj.GenerateResource.cache , 847
QFSendEmail/obj/Debug/SendEmail.csprojAssemblyReference.cache , 6849
QFSendEmail/obj/Debug/SendEmail.exe , 15360
QFSendEmail/obj/Debug/SendEmail.pdb , 24064
QFSendEmail/obj/Debug/TempPE/Properties.Resources.Designer.cs.dll , 4608
QFSendEmail/obj/SendEmail.csproj.FileList.txt , 282