Rebex Secure Mail for .NET Features - SMTP

SMTP is the protocol for sending internet mail. It was defined in RFC 821, later refined in RFC 2821. A number of extensions also exists.

Major features

• Send mail using a single line of code.
• Send mail from a disk file or stream.
• Send any MailMessage or MimeMessage instance (arbitrary number of body views, attachments, ...)
• Automatically detects and uses supported SMTP extensions.
• Binary MIME and 8bit MIME messages supported.
• Chunking and pipelining for better performance.
• Delivery status notifications.
• Both synchronous and asynchronous operations. Designed according to .NET Framework asynchronous operations design patterns.
• Authentication to the SMTP server.
• Send directly to recipient's SMTP server (no local SMTP server is needed).
• Events can raised when command is sent, response is receiving, data is transferred or recipient is rejected.
• Custom commands and enhanced status codes.
• ETRN (enhanced turn) command support.
• VRFY (verify) command support.
• Proxy support.
• Compatible with both state-of-the-art and legacy SMTP servers.
• Compliant with RFC 2821, 1891, 1893, 1985, 2034, 2197, 2554, 3030, etc.
• SMTP over TLS/SSL, both implicit and explicit security.

Supported authentication methods

• Auto - automatically choose the best method available.
• Plain - RFC 2595 plaintext authentication.
• NTLM - Microsoft's Integrated Windows Authentication.
• Digest-MD5 - RFC 2831 DIGEST-MD5 authentication.
• CRAM-MD5 - RFC 2195 CRAM-MD5 authentication.
• Login - 'LOGIN' plaintext authentication.

Sample usage

This sample demonstrates sending a very simple e-mail message.

C#

using Rebex.Net;
...

Smtp.Send
(
	"from@example.org",
	"to@example.org",
	"Mail subject",
	"Hello from Rebex!",
	"smtp.example.org",
);

VB.NET

Imports Rebex.Net
...

Smtp.Send( _
	"from@example.org", _
	"to@example.org", _
	"Mail subject", _
	"Hello from Rebex!", _
	"smtp.example.org")