winsock programming, using smtp realize sending e-mail using c# coding to achieve

SMTPMail
........\Backup
........\......\SMTPMail
........\......\SMTPMail.sln
........\......\SMTPMail.suo
........\......\........\Form1.cs
........\......\........\Form1.Designer.cs
........\......\........\Form1.resx
........\......\........\Program.cs
........\......\........\Properties
........\......\........\..........\AssemblyInfo.cs
........\......\........\..........\Resources.Designer.cs
........\......\........\..........\Resources.resx
........\......\........\..........\Settings.Designer.cs
........\......\........\..........\Settings.settings
........\......\........\SMTPMail.csproj
........\......\........\Verify.cs
........\SMTPMail
........\SMTPMail.sln
........\SMTPMail.suo
........\........\bin
........\........\...\Debug
........\........\...\.....\contact
........\........\...\.....\.......\contactRecord.txt
........\........\...\.....\SMTPMail.exe
........\........\...\.....\SMTPMail.pdb
........\........\...\.....\SMTPMail.vshost.exe
........\........\...\Release
........\........\Form1.cs
........\........\Form1.Designer.cs
........\........\Form1.resx
........\........\obj
........\........\...\Debug
........\........\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
........\........\...\.....\GenerateResource-ResGen.read.1.tlog
........\........\...\.....\GenerateResource-ResGen.write.1.tlog
........\........\...\.....\Refactor
........\........\...\.....\SMTPMail.csproj.FileListAbsolute.txt
........\........\...\.....\SMTPMail.csproj.GenerateResource.Cache
........\........\...\.....\SMTPMail.exe
........\........\...\.....\SMTPMail.Form1.resources
........\........\...\.....\SMTPMail.pdb
........\........\...\.....\SMTPMail.Properties.Resources.resources
........\........\...\.....\TempPE
........\........\...\.....\......\Properties.Resources.Designer.cs.dll
........\........\Program.cs
........\........\Properties
........\........\..........\AssemblyInfo.cs
........\........\..........\Resources.Designer.cs
........\........\..........\Resources.resx
........\........\..........\Settings.Designer.cs
........\........\..........\Settings.settings
........\........\SMTPMail.csproj
........\........\Verify.cs
........\UpgradeLog.XML
........\_UpgradeReport_Files
........\....................\UpgradeReport.css
........\....................\UpgradeReport.xslt
........\....................\UpgradeReport_Minus.gif
........\....................\UpgradeReport_Plus.gif

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