MailBee.NET Queue

AfterlogicEmail Tools.NET
Version v1.6.7 (Mar 23, 2026)

Background email delivery service for .NET with full C# source code.

  • Delivers emails from .EML files in a monitored folder.
  • Supports SMTP authentication including NTLM and SSL.
  • Includes multi-threaded sending and detailed logging.
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Easy-to-use .NET service to deliver e-mails in the background.
MailBee.NET Queue operates as a Windows service that enables applications to offload email sending by writing .EML files to a folder. It asynchronously processes these files, sending emails via SMTP servers with support for authentication, SSL encryption, and multi-threading. Developers can configure it with a GUI or config files and use its API to manage complex delivery scenarios.

Background Email Delivery

Runs as a Windows service monitoring a disk folder for .EML files, sending emails in the background without blocking the calling applications.

.EML File Integration

Accepts .EML files from any application capable of producing them, including MailBee.NET and MailBee products, allowing flexible email queuing.

SMTP Server Support

Sends emails through SMTP servers with support for SMTP-over-SSL, SMTP authentication methods including NTLM and Integrated Windows Authentication.

Multi-threaded Sending

Delivers emails concurrently using multiple threads to improve throughput and handle large volumes efficiently.

Comprehensive Logging

Logs detailed activity and SMTP session information into files for monitoring and troubleshooting purposes.

Flexible Configuration

Provides a graphical user interface and direct config file editing to customize behavior, including connection limits and sending options.

Developer API Access

Offers an API usable from any .NET language to control SMTP relay servers, use direct MX delivery, and set sending limits per session or connection.

Product Compatibility

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

Component Type

  • .NET

.NET Version

  • .NET 6 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