Step 1: Click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "OutlookMail" and then click OK
Step 2: Design your form as below

You need to install Microsoft Outlook, then add a reference to Microsoft.Office.Interop.Outlook.dll
Step 3: Add code to handle your form as below
using System;
using System.Data;
using System.Windows.Forms;
using Outlook = Microsoft.Office.Interop.Outlook;
namespace OutlookMail
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void btnSend_Click(object sender, EventArgs e)
{
try
{
//Using COM to send email
Outlook._Application _app = new Outlook.Application();
Outlook.MailItem mail = (Outlook.MailItem)_app.CreateItem(Outlook.OlItemType.olMailItem);
mail.To = txtTo.Text;
mail.Subject = txtSubject.Text;
mail.Body = txtMessage.Text;
mail.Importance = Outlook.OlImportance.olImportanceNormal;
((Outlook._MailItem)mail).Send();
MessageBox.Show("Your message has been successfully sent.", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
DataTable dt;
private void btnReceive_Click(object sender, EventArgs e)
{
try
{
Outlook._Application _app = new Outlook.Application();
Outlook._NameSpace _ns = _app.GetNamespace("MAPI");
Outlook.MAPIFolder inbox = _ns.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox);
_ns.SendAndReceive(true);
dt = new DataTable("Inbox");
dt.Columns.Add("Subject", typeof(string));
dt.Columns.Add("Sender", typeof(string));
dt.Columns.Add("Body", typeof(string));
dt.Columns.Add("Date", typeof(string));
dataGrid.DataSource = dt;
foreach (Outlook.MailItem item in inbox.Items)
dt.Rows.Add(new object[] { item.Subject, item.SenderName, item.HTMLBody, item.SentOn.ToLongDateString() + " " + item.SentOn.ToLongTimeString() });
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Message", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void dataGrid_CellClick(object sender, DataGridViewCellEventArgs e)
{
//Display email as html
if (e.RowIndex < dt.Rows.Count && e.RowIndex >= 0)
webBrowser.DocumentText = dt.Rows[e.RowIndex]["Body"].ToString();
}
}
}
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