Suggestions for working together with:
https://higlabo.codeplex.com/documentation
https://mailsystem.codeplex.com/
https://imapx.codeplex.com/
https://github.com/andyedinborough/aenetmail
https://github.com/jstedfast/MailKit
Lumisoft Mail
References:
http://stackoverflow.com/questions/545724/using-c-sharp-net-librarires-to-check-for-imap-messages-from-gmail-servers
http://stackoverflow.com/questions/670183/accessing-imap-in-c-sharp
https://higlabo.codeplex.com/documentation
https://mailsystem.codeplex.com/
https://imapx.codeplex.com/
https://github.com/andyedinborough/aenetmail
https://github.com/jstedfast/MailKit
Lumisoft Mail
References:
http://stackoverflow.com/questions/545724/using-c-sharp-net-librarires-to-check-for-imap-messages-from-gmail-servers
http://stackoverflow.com/questions/670183/accessing-imap-in-c-sharp