Rebex EWS

RebexEmail Tools.NET
Version 8.0.9673 (Jun 25, 2026)

Component for Exchange server interaction using EWS protocol.

  • Work with Exchange messages, folders, attachments, and mailbox content.
  • Search mailboxes, manage items, and handle shared mailbox scenarios.
  • Supports secure connections and authentication methods.
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A comprehensive .NET component for effortless Microsoft Exchange integration.
Rebex EWS is a .NET library for accessing Microsoft Exchange servers through Exchange Web Services. It enables applications to connect to mailboxes, send and retrieve messages, search mailbox content, manage folders and attachments, and integrate Exchange communication into desktop, web, server, and service applications.

Easy-to-use API

Offers a straightforward API for connecting, authenticating, retrieving unread emails, sending messages, and managing attachments, simplifying common Exchange server tasks.

Connecting and Authentication

Supports various connection protocols including secure TLS 1.3 and unsecure HTTP, with multiple authentication modes such as username/password, OAuth 2.0, client certificates, Kerberos, NTLM, and single sign-on.

Email Operations

Enables sending simple or complex email messages, forwarding, replying, sending on behalf of users, and redirecting replies with full MIME and S/MIME support for secure email handling.

Message and Folder Management

Provides capabilities to list, download, upload, copy, move, delete messages and folders. It supports metadata and categories, attachment handling, and folder operations like creation, renaming, and existence checks.

Searching and Synchronization

Includes advanced search features with logical operators and paging. Supports synchronization of folders and items with checkpoint-based cumulative updates.

Advanced Features

Supports accessing shared mailboxes, user impersonation, resolving mailbox and contact names, determining Exchange server versions, and configuring deletion modes for messages.

Asynchronous and Event Support

Implements asynchronous operations using task-based and legacy patterns with full synchronization context support and event handling like certificate validation.

Security and Communication

Incorporates TLS/SSL core with server certificate validation, X.509 certificate management, customizable logging of communications, proxies support including SOCKS and HTTP CONNECT, and integration with SSIS, SQL CLR, and PowerShell.

Product Compatibility

Review the details below to ensure this product is supported within your environment.

Component Type

  • .NET

.NET Version

  • .NET 10 LTS
  • .NET 9 STS
  • .NET 8 LTS
  • .NET 5 / .NET Core 3.1
  • .NET 4.8 or earlier

.NET Platform

  • .NET Assembly
  • .NET Class
  • .NET Core 3.1 Assembly

IDE Support

  • Visual Studio