Rebex.Graph 8.0.9797

Rebex Graph - The C# Microsoft Graph library for .NET

Rebex Graph is a .NET client library for Microsoft Graph API (Exchange Online). It provides access to Exchange Online / Microsoft 365 mailboxes for sending, receiving, listing, and searching email messages and managing folders. For creating and manipulating email messages, use Rebex.Mail. For on-premises Exchange, use Rebex.Ews. For IMAP/POP3 access, use Rebex.Imap or Rebex.Pop3.

Actively developed and maintained with regular updates and new features.

Key features

• Message operations - list, download, upload, copy, move, delete messages; paged results
• Folder operations - list, create, rename, delete folders
• Searching - search by sender, subject, date, read status; combine criteria with AND, OR, NOT operators
• Sending e-mails - send messages directly through Microsoft 365
• OAuth 2.0 authentication - user-interactive and app-only (unattended) authentication with OAuth 2.0 access tokens
• Async/await API - Task-based asynchronous API support
• MIME and S/MIME - sign, encrypt, and verify messages using X.509 certificates (via Rebex.Mail)
• Cryptographic algorithms including PQC - ML-KEM, ML-DSA, Ed25519, ChaCha20/Poly1305, AES/GCM, ECDH, ECDSA, RSA, and more
• FIPS 140-3 compliant mode

Getting started

Connect, authenticate and search for unread messages

using (var client = new Rebex.Net.GraphClient())
{
    // connect to Exchange Online (Microsoft 365) server
    client.Connect();

    // authenticate with your OAuth access token
    client.Login(token);

    // get list of unread messages from Inbox
    var unread = GraphMessageSearchParameter.IsRead(false);
    GraphMessageCollection messages = client.Search(GraphFolderId.Inbox, unread);

    // print some info
    foreach (GraphMessageInfo info in messages)
    {
        Console.WriteLine("From: {0}", info.From);
        Console.WriteLine("Subject: {0}", info.Subject);
    }

    // disconnect (not required, but polite)
    client.Disconnect();
}

Get message list

GraphMessageCollection messages = client.GetMessageList(GraphFolderId.Inbox);

foreach (GraphMessageInfo info in messages)
{
    Console.WriteLine("From: {0}", info.From);
    Console.WriteLine("Subject: {0}", info.Subject);
}

Download a message

MailMessage mail = client.GetMailMessage(messageId);

Console.WriteLine("From: {0}", mail.From);
Console.WriteLine("Subject: {0}", mail.Subject);
foreach (Attachment item in mail.Attachments)
{
    Console.WriteLine(" * {0} <{1}>", item.DisplayName, item.ContentType);
}

Send a message

MailMessage mail = new MailMessage();
mail.To = "bob@example.org";
mail.Subject = "Sent using Rebex Graph";
mail.BodyText = "Hello World!";

client.SendMessage(mail);

Get message list with paging

int offset = 0;
int pageSize = 1000;
while (true)
{
    GraphMessageCollection messages = client.GetMessageList(
        GraphFolderId.Inbox,
        new GraphPageView(offset, pageSize));

    foreach (GraphMessageInfo m in messages)
    {
        Console.WriteLine("[{0}] ({1}) {2}", m.ReceivedDate, m.From, m.Subject);
    }

    if (messages.Count == 0)
        break;

    offset += messages.Count;
}

Supported platforms

• .NET 10 on Windows, Linux, macOS, Android, iOS/tvOS
• .NET 9 on Windows, Linux, macOS, Android, iOS/tvOS
• .NET 8 on Windows, Linux, macOS, Android, iOS/tvOS
• .NET 7 on Windows, Linux, macOS, Android, iOS/tvOS
• .NET 6 on Windows, Linux, macOS
• .NET 5 on Windows, Linux, macOS
• .NET Framework 4.0, 4.5.x, 4.6.x, 4.7.x, 4.8.x
• .NET Framework 3.5 SP1
• .NET Core 3.1 on Windows, Linux, macOS
• Xamarin.Android (10.1 and higher; via .NET Standard 2.1)
• Xamarin.iOS (13.10 and higher; via .NET Standard 2.1)
• Mono 6.0 or higher on Linux and macOS

Supported architectures: x86, x64, AMD64.

Licensing

This is a paid commercial product with a free 30-day trial.

• Trial mode: Start your free 30-day trial by generating your trial key
• Licensed mode: Buy Rebex Graph and get your full license key

When the full license key is provided, NuGet.org repository can be used to retrieve versions of Rebex components covered by your support contract.

Support

Talk to real people. No scripted or AI responses. Support is provided directly by the engineers who design and build the library.

Email us at support@rebex.net or visit rebex.net/support.

Documentation

• API reference
• Connecting and authenticating
• Sending e-mails
• Message operations
• Folder operations
• Searching
• Advanced features
• Asynchronous operations
• Communication logging
• MIME and S/MIME
• TLS/SSL core
• X.509 certificates
• Proxies and custom sockets
• Standards and platforms