Dear Sir,

I am using this......

Dim rec As String = txtemail.Text

Dim mm As New MailMessage(rec, "contact@ivslholidays.com")

mm.Subject = "Recieved Mail for Tour Specialist"

mm.Body = "Name: " & txtusername.Text & "<br /><br />Email: " & txtemail.Text & "<br />" & RichTextBox.Text

mm.IsBodyHtml = True

Dim smtp As New SmtpClient()

smtp.Host = "smtp.zoho.com"

smtp.EnableSsl = True

Dim NetworkCred As New System.Net.NetworkCredential()

NetworkCred.UserName = "contact@ivslholidays.com"

NetworkCred.Password = "admin@54321"

smtp.UseDefaultCredentials = False

lblmessage.Text = "Thanks, Message sent sucessfully."

txtusername.Text = ""

txtemail.Text = ""

RichTextBox.Text = ""

and this facing an issue....