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SMTP Relay

Features | Detailed Description

The SMTP Relay is a component from the Clever Internet Suite library.
This component implements a SMTP Relay agent. With SMTP relay, a mail message can be delivered directly to recipient's SMTP server.

Available in .NET, VCL and ActiveX editions.


  • Connect directly to recipient's SMTP server (no local SMTP server is needed)
  • Send any e-mails in text, HTML, alternative MIME, UUE and AppleTalk formats
  • Automatic email domain resolving - query MX DNS records
  • Delivery status information
  • Events for sending commands, receiving responses, e-mail relaying progress
  • Free one year upgrades and support

Relay mail in just few lines of code

// [Delphi]
smtpRelay1.DnsServer := txtDNS.Text;

for i := 0 to smtpRelay1.StatusList.Count - 1 do
   status := smtpRelay1.StatusList[i];
   Memo1.Lines.Add('====== ' + status.Domain + ' ======');
   if status.IsSent then
      Memo1.Lines.Add('Is Sent: Yes'); 
   Memo1.Lines.Add('Error: ' + status.ErrorText);

// [C#]
smtpRelay1.DnsServer = txtDNS.Text;

foreach (SmtpRelayStatus item in smtpRelay1.StatusList) {
   txtDeliveryStatus.Text += "====== " + item.Domain + " ======\r\n";
   txtDeliveryStatus.Text += "Status: " + (item.IsSent ? "Sent" : "Not Sent") + "\r\n"; 
   txtDeliveryStatus.Text += "Error: " + item.ErrorText + "\r\n\r\n";

Samples, including WinForm clients with full source code

Please see the Demos code (SmtpRelay) and also the indexed Help documentation provided with the Clever Internet Suite installation to learn more about using this component in your application.

Includes support for Delphi, C++Builder, C#, VB.NET and Javascript.

Complete Delphi and C# source code

When Purchasing the Clever Internet Suite you receive the full sources for all suite components and also free unlimited support.


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