Send Mail Using Gmail, Yahoo Account in VB.Net and C#.Net

In this article I am going to show how to send mail from Gmail or Yahoo using VB.Net & C# without logging into your Gmail account.



SMTP Client

1. Yahoo: smtp.mail.yahoo.com
2. Gmail: smtp.gmail.com

VB.NET Code

Imports System.Net

Public Class Form1

Private Sub Label5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label5.Click

OpenFileDialog1.ShowDialog()

End Sub

Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk

txtatt.Text = OpenFileDialog1.FileName.ToString

End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim str As String = ""

Dim state As Boolean

If Microsoft.VisualBasic.Right(txtfrom.Text, 9) = "gmail.com" Then

str = "smtp.gmail.com"

state = True

ElseIf Microsoft.VisualBasic.Right(txtfrom.Text, 9) = "yahoo.com" Then

str = "smtp.mail.yahoo.com"

state = False

End If

Dim From As Mail.MailAddress = New Mail.MailAddress(txtfrom.Text)

Dim [To] As Mail.MailAddress = New Mail.MailAddress(txtto.Text)

Dim Message As Mail.MailMessage = New Mail.MailMessage(From, [To])

Message.Subject = txtsub.Text

Message.Body = txtmess.Text

Message.Attachments.Add(New Mail.Attachment(OpenFileDialog1.FileName.ToString))

Dim client = New Mail.SmtpClient(str)

client.EnableSsl = state

client.Credentials = New System.Net.NetworkCredential(txtfrom.Text, txtpass.Text)

client.Send(Message)

MsgBox("Send Email Successfully")

End Sub

End Class

C#.NET Code

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Net;

namespace SendEmailCS

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

public void Button1_Click(System.Object sender, System.EventArgs e)

{

string str="";

Boolean state=false;

if (right (txtfrom .Text ,9)=="gmail.com")

{

str = "smtp.gmail.com";

state =true ;

}

else if (right (txtfrom .Text ,9)=="yahoo.com")

{

str = "smtp.mail.yahoo.com";

state = false ;

}

System.Net.Mail.MailAddress From = new System.Net.Mail.MailAddress(txtfrom.Text);

System.Net.Mail.MailAddress To = new System.Net.Mail.MailAddress(txtto.Text);

System.Net.Mail.MailMessage Message = new System.Net.Mail.MailMessage(From, To);

Message.Subject = txtsub.Text;

Message.Body = txtmess.Text;

Message.Attachments.Add(new System.Net.Mail.Attachment(openFileDialog1.FileName.ToString()));

System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient(str);

client.EnableSsl = Convert .ToBoolean (state );

client.Credentials = new System.Net.NetworkCredential(txtfrom.Text, txtpass.Text);

client.Send(Message);

MessageBox.Show("Send Email Successfully");

}

public string right(string param, int length)

{

string result = param.Substring(param.Length - length, length);

return result;

}

private void Label5_Click_1(object sender, EventArgs e)

{

openFileDialog1.ShowDialog();

}

private void openFileDialog1_FileOk(object sender, CancelEventArgs e)

{

txtatt.Text = openFileDialog1.FileName.ToString();

}

}

}

This article helps you to send an Email using a Gmail or Yahoo acount.