How to use gmail SMTP in ASP.NET form - asp.net

Question

I am a ASP novice and am troubleshooting a form for work. None of us here are ASP experts as we use PHP. But I am on the bottom of PHP experience as well, mostly working with HTML/CSS alone. My current forms credentials look like:
rotected Sub SubmitForm_Click(ByVal sender As Object, ByVal e As System.EventArgs)
If Not Page.IsValid Then Exit Sub
Dim SendResultsTo As String = "email to"
Dim smtpMailServer As String = "email server"
Dim smtpUsername As String = "email username"
Dim smtpPassword As String = "password"
Dim MailSubject As String = "Form Results"
How would I go about making this form send to a Gmail address? I know I must include the port (587) somewhere, but cannot figure out where, as this form doesn't match the syntax of any other forms I have seen. Any help would be greatly appreciated!

Answer 1

You can add this in your web.config file
<system.net>
<mailSettings>
<smtp from="yourMailId#gmail.com ">
<network host="smtp.gmail.com" defaultCredentials="false"
port="587" userName ="yourmail#gmail.com" password="yourpassword" />
</smtp>
</mailSettings>
</system.net>

Answer 2

protected void SendMail()
{
MailMessage msg = new MailMessage();
System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
try
{
msg.Subject = "Add Subject";
msg.Body = "Add Email Body Part";
msg.From = new MailAddress("Valid Email Address");
msg.To.Add("Valid Email Address");
msg.IsBodyHtml = true;
client.Host = "smtp.gmail.com";
System.Net.NetworkCredential basicauthenticationinfo = new System.Net.NetworkCredential("Valid Email Address", "Password");
client.Port = int.Parse("587");
client.EnableSsl = true;
client.UseDefaultCredentials = false;
client.Credentials = basicauthenticationinfo;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.Send(msg);
}
catch (Exception ex)
{
log.Error(ex.Message);
}
}

Answer 3

Create a System.Net.Mail.SmtpClient object, set the SMTP server info you are using.
Then create a System.Smtl.MailMessage with the message data and send it:
using (System.Net.Mail.SmtpClient mail = new System.Net.Mail.SmtpClient()) {
using (System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage("from*where.com", "to#where.com") {
IsBodyHtml = true,
Subject = "Subject text",
Body = messageBody,
}) {
mail.Send(message);
} // using
You can configure your SmtpClient in the constructor, we use web.comfig, so I don't have that code.

Answer 4

Google now blocks sign-ins from an app (even over SSL) to send an email. You have two options:
Enable less-secure apps for the account you are using; OR
Generate an app-password from Google (recommended)
For option 2, you will have to enable 2-factor authentication before you can generate an app pasword.
Here are the steps I took to get this working on my ASP.NET web app
How to configure an ASP.NET web app with Gmail SMTP

Answer 5

Try this.
Dim client As New Net.Mail.SmtpClient
client.UseDefaultCredentials = False
client.Credentials = New System.Net.NetworkCredential("sender#gmail.com", "password")
client.Host = "smtp.gmail.com"
client.Port = 587
client.EnableSsl = True
client.Send("sender#gmail.com","reciever#gmail.com","subject","body")

Answer 6

If you're using 2-step verification, don't forget to generate an application specific password and use that, not the password you use to log on to Gmail.
(Sorry I can't add this as a comment. Not enough rep at the time of posting this.)

Answer 7

There's no shortage of tutorials on how to send an email from within .NET.
Essentially you want a System.Net.Mail.SmtpClient object to interact with the SMTP server, a System.Net.Mail.MailMessage object to hold the message data, and configuration data in your config file to direct the client on how/where to send the message.