Just Read the data from DB and set it as
MailMessage.Body
Property.
You have to use Following namespace,
Using System.Net.Mail
Sample Code :
MailMessage Mail = new MailMessage();<br /> MailAddress mailAdd = new MailAddress(txtFrom.Text,txtName.Text);<br /> Mail.From = mailAdd ;<br /> Mail.To.Add(txtTo.Text);<br /> Mail.Subject = txtSubject.Text;<br /> Mail.Body = ReadMailBody();