Quickstart

dotnet new console -n EmailDemo
cd EmailDemo
dotnet add package Aspose.Email.Foss

using System.IO;
using Aspose.Email.Foss.Msg;

using var stream = File.OpenRead("sample.msg");
var message = MapiMessage.FromStream(stream);

Console.WriteLine($"Subject: {message.Subject}");
Console.WriteLine($"From: {message.SenderName} <{message.SenderEmailAddress}>");

foreach (var recipient in message.Recipients)
    Console.WriteLine($"  To: {recipient.DisplayName} <{recipient.EmailAddress}>");

foreach (var attachment in message.Attachments)
    Console.WriteLine($"  Attachment: {attachment.Filename} ({attachment.MimeType})");

using System.IO;
using Aspose.Email.Foss.Msg;

var message = MapiMessage.Create("Quarterly Update", "Please see the attached report.");
message.SenderName = "Alice";
message.SenderEmailAddress = "alice@example.com";

message.AddRecipient("bob@example.com", "Bob");
message.AddRecipient("carol@example.com", "Carol", MapiMessage.RecipientTypeCc);

message.AddAttachment("report.pdf", File.ReadAllBytes("report.pdf"), "application/pdf");

message.Save("quarterly-update.msg");

using var msg = MapiMessage.FromFile("quarterly-update.msg");
Console.WriteLine(msg.Subject);           // Quarterly Update
Console.WriteLine(msg.Attachments.Count); // 1

using System.IO;
using Aspose.Email.Foss.Msg;

// EML → MSG
using var emlInput = File.OpenRead("incoming.eml");
var message = MapiMessage.LoadFromEml(emlInput);
message.Save("incoming.msg");

// MSG → EML (round-trip)
message.SaveToEml("roundtrip.eml");