MyWebServer File Extractor 

The MyWebServer File Extractor Un-Mimes files that were uploaded to MyWebServer. Your Web Browser uploads files in a MIME (Multipurpose Internet Mail Extensions) format. When you upload a file using MyWebServer your file is saved in this format.
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Chilkat Mail.NET - Send Email with C# 

.NET SMTP / POP3 Email Component with S/MIME for signed and encrypted mail, attachments, HTML mail, Auto-Zip and Unzip attachments, XML import and export, SMTP authorization, Outlook integration, distribution lists, internationalized, mail-merge.
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Aspose.Mime 

Aspose.Mime is a .Net Email parsing component for building email solutions. It can be a core of any email receiving solution, like POP3 and IMAP.
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Aspose.Email 

Aspose.Email is a composing and Smtp sending component with advanced features like Mail Merge, objects embedding, logging, monitoring, smtp configuration.The latest release Integrated all of the features of Aspose.Mime into Aspose.Email;etc.
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Clever Internet ActiveX Suite 

full MIME supportThe Clever Internet ActiveX Suite v 5.0 allows you to download, upload and post the Internet-resources asynchronously andobtain all related information without interfering with main application processes.
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E-Mail Expert 

E-Mail Expert is an activeX control and a COM DLL for sending SMTP and MIME e-mail messages. E-Mail Expert has all the features you need to easily create a professional e-mail sending application or component. A local SMTP server is not required!
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