Send Email with attachments from VB.NET applications.
Send Email, with attachments, from VB.NET applications using the "System Web Mail" namespace.

Send Email using the ShellExecute API equivalent.
Send Email using the "System Diagnostics Process Start" command, the equivalent of the "ShellExecute" API.

Send Email using the MailTo command.
Send Email from HTML using the "MailTo" hyperlink command. When an email hyperlink is clicked, the user's default email client will create a new email with the To, Subject,... fields pre-populated.