Create MIME Containing Plain-Text

Calls SetBodyFromPlainText to load plain-text into the MIME body. Also sets the Content-Type header to "text/plain", and the Content-Transfer-Encoding to an appropriate transfer encoding based on the characters found in the text.

Download Chilkat MIME ActiveX

uses
    Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
    Dialogs, StdCtrls,
    CHILKATMIMELib_TLB,
    OleCtrls;

...

procedure TForm1.Button1Click(Sender: TObject);
var
mime: CHILKATMIMELib_TLB.IChilkatMime;
success: Integer;
textBody: String;

begin
mime := CoChilkatMime.Create();

success := mime.UnlockComponent('Anything for 30-day trial.');
if (success = 0) then
  begin
    Memo1.Lines.Add(mime.LastErrorText);
    Exit;
  end;

//  Add a few header fields:
mime.AddHeaderField('Description','this is a test');
mime.AddHeaderField('MyId','123');

textBody := 'This is the plain-text body';

mime.SetBodyFromPlainText(textBody);

Memo1.Lines.Add(mime.GetMime());

//  The MIME should look like this:
//  
Description: this is a test
MyId: 123
Content-Type: text/plain; 
Content-Transfer-Encoding: 7bit

This is the plain-text body

//  Note: The Content-Transfer-Encoding may be changed.
//  For example, to use "base64", do this:
mime.Encoding := 'base64';

//  Show the MIME again, this time using the base64
//  transfer encoding:
Memo1.Lines.Add(mime.GetMime());

//  It should look like this:
//  
Description: this is a test
MyId: 123
Content-Type: text/plain
Content-Transfer-Encoding: base64

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end;