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ivan  
#1 Posted : Sunday, May 1, 2011 11:52:05 PM(UTC)
ivan

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Delphi Example
SSL connection encrypts data between the email component and POP3 server or IMAP4 server to protect user, password and email content in TCP/IP level. Now this technology is commonly used and many email servers are deployed with SSL such as Gmail, Yahoo and Hotmail. There are two ways to deploy SSL on email server: 1. Using STARTTLS or STLS command to switch SSL channel on normal port (POP3: 110 or IMAP4: 143); 2. Deploying SSL on another port (POP3: 995 or IMAP4: 993 you may query it from your server administrator) directly.

The following example codes demonstrate how to retrieve email over SSL connection from POP3 server. This sample downloads emails from POP3 server and deletes the email after the email is retrieved.

Code:

// The following example codes demonstrate retrieving email over SSL connection from POP3 server
// To get full sample projects, please download and install EAGetMail on your machine.
// To run it correctly, please change email server, user, password, folder, file name value to yours

Unit Unit1; 

Interface 

Uses 
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, 
  Dialogs, StdCtrls, EAGetMailObjLib_TLB; 

Type 
  TForm1 = Class(TForm) 
    Button1: TButton; 
    Procedure Button1Click(Sender: TObject); 
  private 
    { Private declarations } 
  public 
    { Public declarations } 
  End; 

Const 
  MailServerPop3 = 0; 
  MailServerImap4 = 1; 

Var 
  Form1: TForm1; 

Implementation 

{$R *.dfm} 

Procedure TForm1.Button1Click(Sender: TObject); 
Var 
  oMail: IMail; 
  oClient: TMailClient; 
  oServer: TMailServer; 
  oTools: TTools; 
  infos: OleVariant; 
  i, UBound, Count: Integer; 
  oInfo: IMailInfo; 
  mailFolder: WideString; 
  fileName: WideString; 
Begin 
  Try 
    oTools := TTools.Create(Application); 

    // Create a folder named "inbox" under
    // current directory to store the email files
    mailFolder := GetCurrentDir() + '\inbox'; 
    oTools.CreateFolder(mailFolder); 

    oServer := TMailServer.Create(Application); 
    oServer.Server := 'pop3.emailarchitect.net'; 
    oServer.User := 'test@emailarchitect.net'; 
    oServer.Password := 'testpassword'; 
    oServer.Protocol := MailServerPop3; 

    // Enable SSL Connection
    oServer.SSLConnection := true; 

    // Set 995 SSL POP3 port
    oServer.Port := 995; 

    oClient := TMailClient.Create(Application); 
    oClient.LicenseCode := 'TryIt'; 

    oClient.Connect1(oServer.DefaultInterface); 
    ShowMessage( 'Connected!' ); 

    infos := oClient.GetMailInfos(); 
    UBound := VarArrayHighBound( infos, 1 ); 
    Count := UBound+1; 
    ShowMessage(Format('Total %d email(s)', [Count])); 

    For i := 0 To UBound Do 
    Begin 
      oInfo := IDispatch(VarArrayGet(infos, i)) As IMailInfo ; 
      ShowMessage(Format('Index: %d; Size: %d; UIDL: ' + oInfo.UIDL, 
      [oInfo.Index, oInfo.Size])); 

      // Generate a random file name by current local datetime,
      // You can use your method to generate the filename if you do not like it
      fileName := mailFolder + '\' + oTools.GenFileName(i) + '.eml; 

      // Receive email from POP3 server
      oMail := oClient.GetMail( oInfo ); 

      ShowMessage( 'From: ' + oMail.From.Address + #13#10 + 
        'Subject: ' + oMail.Subject ); 

      // Save email to local disk
      oMail.SaveAs( fileName, true ); 

      // Mark email as deleted from POP3 server
      oClient.Delete(oInfo); 
    End; 

    // Quit and pure emails marked as deleted from POP3 server
    oClient.Quit; 

  Except 
    On ep:Exception Do 
      ShowMessage( 'Error: ' + ep.Message ); 
  End; 
End; 

End. 

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