How to send E-mail in Asp.net using web.config?

Introduction:In this post I go to tell you to send E-mail using web.config. Sometime we create a web application and there is lot of form to send E-email to users. If in future E-mail address of Administration will change then we have to change the E-mail address of Administration in every web form.  If we want it would not happen in future so we mention the E-mail address detail in web.config file of application.
Description:

Now see how we can do it simply. Add the below mention information in web.config file.

<appSettings>

    <add key="Email" value="your E-mail address"/>

  </appSettings>

  <system.net>

    <mailSettings>

      <smtp deliveryMethod="Network">

        <network enableSsl="true" port="587" host="smtp.gmail.com" userName="E-mail addrerss" password="Password"/>

      </smtp>

    </mailSettings>
</system.net>

Now add a web form to application.

  <asp:ScriptManager ID="ScriptManager1" runat="server">

        </asp:ScriptManager>

    <table>

    <tr><td>Email Address</td><td>

        <asp:TextBox ID="txtemail" runat="server"></asp:TextBox></td></tr>

        <tr><td>Subject</td><td>

            <asp:TextBox ID="txtsubject" runat="server"></asp:TextBox></td></tr>

            <tr><td>Comment</td><td>

                <cc1:Editor ID="Editor1" runat="server" />

                &nbsp;</td></tr>

                <tr><td>&nbsp;</td><td>&nbsp;</td></tr>

                <tr><td></td><td><asp:Button ID="dtnsend" runat="server" Text="Send" onclick="dtnsend_Click" />

                    </td></tr>

    </table>

   

Double click on Send button that redirect you to .aspx.cs page. Add the namespace to page.

using System.Net.Mail;

using System.Configuration;

On button click add below mention code:

protected void dtnsend_Click(object sender, EventArgs e)

    {

        try

        {

            string Email = ConfigurationManager.AppSettings["Email"].ToString();

            string Emailto = txtemail.Text;

            MailMessage mail = new MailMessage(Email, Emailto);

            mail.Subject = txtsubject.Text;

            mail.Body = Editor1.Content ;

            mail.IsBodyHtml = true;

            SmtpClient smtp = new SmtpClient();

            smtp.Send(mail);

            Response.Write("Email send successfully");

            Clear();

        }

        catch (Exception ex)

        {

        }

    }

    public void Clear()

    {

        txtemail.Text = "";

        Editor1.Content = "";

        txtsubject.Text = "";

    }

Now debug the application and check the result.

Related Articles on Send Email:

How to Send Email with Attachment in Asp.net

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