Mail Sending in asp.net c#

Sno	Server Name	SMTP Address	Port	SSL
1	GMail	smtp.gmail.com	587	Yes
2	Hotmail	smtp.live.com	587	Yes
3	Yahoo	smtp.mail.yahoo.com	587	Yes
4	Rediffmail	smtp.rediffmail.com	587	Yes
5	Outlook	smtp.live.com	587	Yes
6	AOL	smtp.aol.com	587	Yes
7	AIM	smtp.aim.com	587	Yes
8	Zoho Mail	smtp.zoho.com	465	Yes
9	Mail.com	smtp.mail.com	587	Yes
10	Sify.com	smtp.sify.com	587	Yes

Aspx page

<table>

       <tbody><tr>

           <td colspan="2">

               <asp:label forecolor="Green" id="lblConfirmation" runat="server">

           </asp:label></td>

       </tr>

       <tr>

           <td>

               <b>Email To</b>

           </td>

           <td>

               <asp:textbox runat="server" id="txtEmailTo">

           </asp:textbox></td>

       </tr>

       <tr>

           <td>

               <b>Subject</b>

           </td>

           <td>

               <asp:textbox runat="server" id="txtEmailSubject">

           </asp:textbox></td>

       </tr>

       <tr>

           <td>

               <b>Body</b>

           </td>

           <td>

               <asp:textbox textmode="MultiLine" runat="server" id="txtEmailBody" height="100px" width="400px">

           </asp:textbox></td>

       </tr>

       <tr>

           <td>

                 

           </td>

           <td>

               <asp:button text="Send Email" id="btnSendEmail" runat="server" onclick="btnSendEmail_Click">

           </asp:button></td>

       </tr>

   </tbody></table>
















Aspx.cs

using System.Net.Mail;

using System.Net;










//--- Button Click to send emails.

    protected void btnSendEmail_Click(object sender, EventArgs e)

    {

        using (MailMessage mm = new MailMessage())

        {

            mm.From = new MailAddress("YourEmailAddress"); //--- Email address of the sender

            mm.To.Add(txtEmailTo.Text); //---- Email address of the recipient.

            mm.Subject = txtEmailSubject.Text; //---- Subject of email.

            mm.Body = txtEmailBody.Text; //---- Content of email.

            mm.IsBodyHtml = false; //---- To specify wether email body contains HTML tags or not.

 

            SmtpClient smtp = new SmtpClient();

            smtp.Host = "smtp.gmail.com"; //---- SMTP Host Details.

            smtp.EnableSsl = true; //---- Specify whether host accepts SSL Connections or not.

            NetworkCredential NetworkCred = new NetworkCredential("YourEmailAddress", "YourPassword");

            //---Your Email and password

            smtp.UseDefaultCredentials = true;

            smtp.Credentials = NetworkCred;

            smtp.Port = 587; //---- SMTP Server port number. This varies from host to host.

            smtp.Send(mm);

 

            //==== Show confirmation message.

            lblConfirmation.Text = "Congratulations, Your email successfully sent";

 

            //---- Clear form fields.

            txtEmailBody.Text = string.Empty;

            txtEmailSubject.Text = string.Empty;

            txtEmailTo.Text = string.Empty;

        }

    }













To use these email service providers you have to just do changes in :

1. smtp.Host
2. smpt.EnableSSL
3. NetworkCredentials
4. smtp.Port

Example sample code

SmtpClient smtp = new SmtpClient();

           smtp.Host = "smtp.rediffmail.com"; //---- SMTP Host Details.

           smtp.EnableSsl = true; //---- Specify whether host accepts SSL Connections or not.

           NetworkCredential NetworkCred = new NetworkCredential("YourRediffMailId", "YourRediffMailPassword");

           //---Your Email and password

           smtp.UseDefaultCredentials = true;

           smtp.Credentials = NetworkCred;

           smtp.Port = 587; //---- SMTP Server port number. This varies from host to host.

           smtp.Send(mm);