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Delphi ExampleSSL 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. STLS command can switch normal POP3 connection to SSL connection. The following example codes demonstrate how to retrieve email over TLS 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 TLS 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;
ConnectSSLAuto = 0;
ConnectSSL = 1;
ConnectTLS = 2;
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 110 POP3 Port
oServer.Port := 110;
// Set TLS connection type
oServer.SSLType := ConnectTLS;
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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