Delphi ActiveX

Set the Charset of an Attachment

Demonstrates the Chilkat Email.SetAttachmentCharset method, which sets the charset parameter of the Content-Type header field for the attachment at a given zero-based index. This example adds a text attachment and sets its charset to utf-8.

Background: For a text attachment, the charset parameter tells the receiving client which character encoding the bytes use, so accented or non-Latin text renders correctly. Setting it explicitly (typically utf-8) removes ambiguity when the attachment contains non-ASCII content — without it, a client may guess wrong and display garbled characters.

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var
success: Integer;
email: TChilkatEmail;

begin
success := 0;

//  Demonstrates the SetAttachmentCharset method, which sets the charset parameter of the
//  Content-Type header field for the attachment at the given zero-based index.

email := TChilkatEmail.Create(Self);
email.Subject := 'Set attachment charset';

email.AddStringAttachment('notes.txt','Some notes.');

//  Set the charset of the first attachment (index 0) to utf-8.
success := email.SetAttachmentCharset(0,'utf-8');
if (success = 0) then
  begin
    Memo1.Lines.Add(email.LastErrorText);
    Exit;
  end;

//  The attachment's Content-Type now includes charset="utf-8".
Memo1.Lines.Add(email.GetMime());