How to set username and password in smtpclient.Credentials for each user

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I am developing a web application which has a concept of sending email.Once the user gives the receiver's mail id and content,the mail will be sent from the user's mail id(Which would be unique for all the user's).This is my code

C#

if (Page.IsValid)
{
   MailMessage mailmessage = new MailMessage();
   mailmessage.From = new MailAddress(test.Text);
   mailmessage.To.Add(new System.Net.Mail.MailAddress(Textemail.Text));
   mailmessage.Subject = TextSub.Text;
   mailmessage.Body = "<b>Query from : </b>" + Textname.Text + "<br/>" +
                     "<b>Sender Details : </b>" + Textemail.Text+ "<br/>" +
                     "<b>Queries Asked : </b>" + Textcomment.Text + "<br/>";
                
   mailmessage.IsBodyHtml = true;
                 
   SmtpClient smtpclient = new SmtpClient("smtp.gmail.com", 587);
   smtpclient.EnableSsl = true;

   smtpclient.Credentials = new System.Net.NetworkCredential("***@gmail.com","");
   smtpclient.Send(mailmessage);
   SuccessLabel.Text = "Your Query has been successfully sent to Appropriate mail id";
                 
   Textname.Enabled = false;
   Textemail.Enabled = false;
   TextSub.Enabled = false;
   Textcomment.Enabled = false;
   SendMsg.Enabled = false;
}

Here in credentials I cant give the username and password of the sender's because it depends on the user who logs in.So how to use the credentials for each separate user who logs in?Please help.!!Thanks in advance!!

Posted 3-Nov-14 6:25am

Member 11176603

Updated 3-Nov-14 11:55am

Nelek

v3

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Comments

Kornfeld Eliyahu Peter 3-Nov-14 12:53pm

The credentials you provide here used to identify a user account on the SMTP server, so the first question is: do you have an SMTP account for every user who logs-in?

DamithSL 3-Nov-14 12:57pm

are you using gmail or some other SMTP server?

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Richard Deeming · Answer 1 · 2014-11-03T08:07:00

The only way to provide the user's GMail credentials would be to ask the user to enter them. Any user with an ounce of common sense wouldn't enter their GMail credentials on a random website, so I don't think that's going to work. :)

You need to provide the credentials of your own GMail account. In order to send the message, you'll need to set the Sender property[^] to your own email address.

C#

mailmessage.From = new MailAddress(test.Text);
mailmessage.Sender = new MailAddress("Your-Address@gmail.com");
...
smtpclient.Credentials = new System.Net.NetworkCredential("Your-Address@gmail.com", "Your-Password");

Depending on the recipient's mail client, the message could be shown as "From <your address> on behalf of <user's address>".