sending email to gmail from asp.net

Question

3.00/5 (1 vote)

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// You can specify the host name or ipaddress of your server
// Default in IIS will be localhost \
// smtpClient.Host = "smtp.google.com";

currently i am using : smtpClient.Host = "localhost";

i get mail to gmail id but it also gets error as fake email id report r learn more so if i don't want to get that what i have to do instead of "local host"

from where i get hostname..??
which ip address i have to give gmail or hosting providers..??
and why i get that error "This message may not have been sent by: test@gmail.com Learn more Report phishing"..??

Check code below:

C#

using System;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Net.Mail;

public partial class _Default : System.Web.UI.Page 
{
    #region  "Send email"
    protected void btnSendmail_Click(object sender, EventArgs e)
    {
        // System.Web.Mail.SmtpMail.SmtpServer is obsolete in 2.0
        // System.Net.Mail.SmtpClient is the alternate class for this in 2.0
        SmtpClient smtpClient = new SmtpClient();
        MailMessage message = new MailMessage();

        try
        {
            MailAddress fromAddress = new MailAddress(txtEmail.Text, txtName.Text);

            // You can specify the host name or ipaddress of your server
            // Default in IIS will be localhost \
            smtpClient.Host = "smtp.gmail.com";
           // smtpClient.Host = "localhost";

            //Default port will be 25
            smtpClient.Port = 25;

            //From address will be given as a MailAddress Object
            message.From = fromAddress;

            // To address collection of MailAddress
            message.To.Add("karthikh87@gmail.com");
            message.Subject = "Feedback";

            // CC and BCC optional
            // MailAddressCollection class is used to send the email to various users
            // You can specify Address as new MailAddress("admin1@yoursite.com")
            message.CC.Add("karthikh87@gmail.com");
            message.CC.Add("karthikh87@gmail.com");

            // You can specify Address directly as string
            message.Bcc.Add(new MailAddress("karthikh87@gmail.com"));
            message.Bcc.Add(new MailAddress("karthikh87@gmail.com"));

            //Body can be Html or text format
            //Specify true if it  is html message
            message.IsBodyHtml = false;

            // Message body content
            message.Body = txtMessage.Text;
         
            // Send SMTP mail
            smtpClient.Send(message);

            lblStatus.Text = "Email successfully sent.";
        }
        catch (Exception ex)
        {
            lblStatus.Text = "Send Email Failed.<br>" + ex.Message;
        }
        Response.Redirect("index.html");
    }
    #endregion

    #region "Reset"
    protected void btnReset_Click(object sender, EventArgs e)
    {
        txtName.Text = "";
        txtMessage.Text = "";
        txtEmail.Text = "";
    }
    #endregion
}

Posted 29-Jan-12 22:40pm

karthikh87

Updated 16-Apr-17 22:50pm

uspatel

v4

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3 solutions

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Accepted Answer · 2012-01-29T23:58:00

You have to add the following codes to send a mail as simple as possible...

[Example is given for gmail account.
That means you have to have one gmail account to send a mail to any address.]

C#

string pweda = "FromMailPassword"; //(ConfigurationManager.AppSettings["password"]);
        string from = "FromYourmail@gmail.com"; //Replace this with your own correct Gmail Address
        string to = "abc@gef.com"; //Replace this with the Email Address to whom you want to send the mail
        System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage();
        mail.To.Add(to);
        mail.From = new MailAddress(from);
        mail.Subject = "This is a test mail";
        mail.SubjectEncoding = System.Text.Encoding.UTF8;
        mail.Body = "Test Mail.";
 
        mail.Priority = MailPriority.High;
        SmtpClient client = new SmtpClient();
 
        //Add the Creddentials- use your own email id and password
        client.UseDefaultCredentials = false;
        client.Credentials = new System.Net.NetworkCredential(from, pweda);
        client.Port = 587; // Gmail works on this port
        client.Host = "smtp.gmail.com";
        client.EnableSsl = true; //Gmail works on Server Secured Layer

        try
        {
            client.Send(mail);
            Response.Write("Message Sent...");
        }
        catch (Exception ex)
        {
            Exception ex2 = ex;
            string errorMessage = string.Empty;
            while (ex2 != null)
            {
                errorMessage += ex2.ToString();
                ex2 = ex2.InnerException;
            }
            HttpContext.Current.Response.Write(errorMessage);
        } // end try

You can send from any mail address if you have any other...
Just replace with the credentials and port and host names which you can get easily get from google.

You can send anything by assigning value to 'mail.Body'.

Add this code where ever you want send the mail...

Happy coding........

Rajesh Anuhya · Accepted Answer · 2012-01-29T22:45:00

Solution 1

See my Answer Here
error in asp.net code to send email[^]

Thanks
--RA

Posted 29-Jan-12 22:45pm

Rajesh Anuhya

Comments

karthikh87 30-Jan-12 4:53am

is it mandatory to give our gmail account username and password..??
can we do without giving " smtps.Credentials = new NetworkCredential ( "mail@gmail.com", "pwd" ); "

Rajesh Anuhya 30-Jan-12 4:56am

No not possible, you have to provide
--RA

karthikh87 30-Jan-12 5:00am

do u mean all contact forms and feedback forms on the website have there email username and password in coding..??

Rajesh Anuhya 30-Jan-12 5:04am

if you are using 3-different mail accounts for these forms , defiantly you should have, like Support@gmail.com, feedback@gmail.com, contact@gmail.com
--RA

Sanjay K. Gupta · Accepted Answer · 2012-01-29T23:01:00

Solution 2

Try this
Sending E-mail using ASP.net through Gmail account (Gmail SMTP Server account)[^]

Missing ----System.Net.NetworkCredential(from, "Password")

Posted 29-Jan-12 23:01pm

Sanjay K. Gupta