How to Send Mail form Asp .Net Website

Description

This is a common function Required for every website. For this you have to add System.Web.Mail namespace

The System.Web.Mail namespace contains classes that enable you to construct and send messages using the CDOSYS (Collaboration Data Objects for Windows 2000) message component. The mail message is delivered either through the SMTP mail service built into Microsoft Windows 2000 or through an arbitrary SMTP server. The classes in this namespace can be used from ASP.NET or from any managed application.
For more info about System.Web.Mail click here.

Steps

-Create a website and design the Form like below screen

or copy this code in source code and paste within < form > tag

<table align="center">

<tr>
<td>
<asp:Label ID="Label6" runat="server" Text="From"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtFrom" runat="server" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label7" runat="server" Text="Password"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtPassword" runat="server" TextMode="Password" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label2" runat="server" Text="To : "></asp:Label>
</td>
<td>
<asp:TextBox ID="txtTo" runat="server" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label3" runat="server" Text="Subject :"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtSub" runat="server" Width="200px"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="Label4" runat="server" Text="Message :"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtMsg" runat="server" Height="117px" TextMode="MultiLine" Width="339px"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Send Mail"
OnClientClick="return validate();" Width="123px" />
</td>
</tr>
<tr>
<td colspan="2" align="center">
<asp:Label ID="Label1" runat="server" ForeColor="Red"></asp:Label>
</td>
</tr>
</table>

now go to code view and write below code

using System;