Delphi ActiveX

Fetch a POP3 Message's Raw MIME by UIDL

Demonstrates the Chilkat MailMan.FetchMimeBd method, which fetches an email from the POP3 server by UIDL and stores the raw MIME source bytes in a BinData. Chilkat clears the BinData before downloading. This example fetches one message's MIME into a BinData.

Background: Sometimes you want the message exactly as it arrived — the raw MIME bytes — rather than a parsed Email object, for example to archive it verbatim as a .eml file, forward it untouched, or hash it. Fetching into a BinData preserves every byte precisely, without any parsing or re-encoding that could alter the original.

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var
success: Integer;
mailman: TChilkatMailMan;
bdMime: TChilkatBinData;

begin
success := 0;

//  Demonstrates the MailMan.FetchMimeBd method, which fetches an email from the POP3 server
//  by UIDL and stores the raw MIME source bytes in a BinData.  Chilkat clears the BinData
//  before downloading.

mailman := TChilkatMailMan.Create(Self);

//  Configure the POP3 server connection.
mailman.MailHost := 'pop.example.com';
mailman.MailPort := 995;
mailman.PopSsl := 1;
mailman.PopUsername := 'user@example.com';
mailman.PopPassword := 'myPassword';

//  Fetch the raw MIME of a specific message by UIDL into a BinData.
bdMime := TChilkatBinData.Create(Self);

success := mailman.FetchMimeBd('0000000123abcdef',bdMime.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(mailman.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('MIME size (bytes) = ' + IntToStr(bdMime.NumBytes));

//  Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
//  connects and authenticates -- using the property settings above -- whenever a server
//  operation requires it.  Calling the explicit connect/authenticate methods can still be
//  helpful to determine whether a failure occurs while connecting or while authenticating.