(.NET Core C#) Create Apple Watch HTML (text/watch-html) Email

Demonstrates how to create an Apple Watch text/watch-html email.

Note: This example requires Chilkat v9.5.0.68 or greater.

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//  This example will produce an email such as:

//  	MIME-Version: 1.0
//  	Date: Fri, 02 Jun 2017 09:17:06 -0500
//  	Message-ID: <E6F1F17104442EA09740322D3E2E78806C87FB80@CHILKAT13>
//  	X-Priority: 3 (Normal)
//  	Subject: Apple Watch Example
//  	From: from@example.org
//  	To: to@example.org
//  	Content-Type: multipart/alternative; boundary="------------080904030200000307060803"
// 
//  	--------------080904030200000307060803
//  	Content-Type: text/plain; charset=utf-8
//  	Content-Transfer-Encoding: quoted-printable
//  	Content-Disposition: inline
// 
//  	This is the plain text part.
//  	--------------080904030200000307060803
//  	Content-Type: text/watch-html; charset=utf-8
//  	Content-Disposition: inline
//  	Content-Transfer-Encoding: quoted-printable
// 
//  	<b>This is the Watch HTML part</b>
//  	--------------080904030200000307060803
//  	Content-Type: text/html; charset=utf-8
//  	Content-Disposition: inline
//  	Content-Transfer-Encoding: quoted-printable
// 
//  	<p>This is the standard HTML part</p>
//  	--------------080904030200000307060803--

//  Create a new email instance to get the default auto-created fields.
Chilkat.Email email = new Chilkat.Email();
email.Body = "This is the plain text part.";
email.Subject = "Apple Watch Example";
email.From = "from@example.org";
email.AddTo("","to@example.org");

Debug.WriteLine(email.GetMime());
Debug.WriteLine("--");

//  This is the MIME so far:
//  (Chilkat automatically removes CKX-* headers when sending email.)

//  	MIME-Version: 1.0
//  	Date: Fri, 02 Jun 2017 09:17:06 -0500
//  	Message-ID: <E6F1F17104442EA09740322D3E2E78806C87FB80@CHILKAT13>
//  	Content-Type: text/plain; format=flowed
//  	Content-Transfer-Encoding: 7bit
//  	X-Priority: 3 (Normal)
//  	Subject: Apple Watch Example
//  	From: from@example.org
//  	CKX-Bounce-Address: from@example.org
//  	To: to@example.org
// 
//  	This is the plain text part.

//  We'll use the Chilkat MIME object to build it.
//  The MIME API provides more flexibility..
Chilkat.Mime mime = new Chilkat.Mime();
mime.LoadMime(email.GetMime());

//  Convert this MIME to multipart/alternative.
mime.ConvertToMultipartAlt();

Debug.WriteLine(mime.GetMime());
Debug.WriteLine("--");

//  We now have this MIME:

//  	MIME-Version: 1.0
//  	Date: Fri, 02 Jun 2017 09:17:06 -0500
//  	Message-ID: <E6F1F17104442EA09740322D3E2E78806C87FB80@CHILKAT13>
//  	X-Priority: 3 (Normal)
//  	Subject: Apple Watch Example
//  	From: from@example.org
//  	CKX-Bounce-Address: from@example.org
//  	To: to@example.org
//  	Content-Type: multipart/alternative; boundary="------------080904030200000307060803"
// 
//  	--------------080904030200000307060803
//  	Content-Type: text/plain; format=flowed
//  	Content-Transfer-Encoding: 7bit
// 
//  	This is the plain text part.
//  	--------------080904030200000307060803--

//  If we desire a particular charset, encoding, or disposition..
Chilkat.Mime partPlainText = mime.GetPart(0);
partPlainText.Charset = "utf-8";
partPlainText.Disposition = "inline";
partPlainText.Encoding = "quoted-printable";

//  Create the text/watch-html MIME part and add it.
Chilkat.Mime partWatchHtml = new Chilkat.Mime();
partWatchHtml.ContentType = "text/watch-html";
partWatchHtml.Charset = "utf-8";
partWatchHtml.Disposition = "inline";
partWatchHtml.Encoding = "quoted-printable";
partWatchHtml.SetBody("<b>This is the Watch HTML part</b>");
mime.AppendPart(partWatchHtml);

Debug.WriteLine(mime.GetMime());
Debug.WriteLine("--");

//  We now have this MIME:

//  	MIME-Version: 1.0
//  	Date: Fri, 02 Jun 2017 09:17:06 -0500
//  	Message-ID: <E6F1F17104442EA09740322D3E2E78806C87FB80@CHILKAT13>
//  	X-Priority: 3 (Normal)
//  	Subject: Apple Watch Example
//  	From: from@example.org
//  	CKX-Bounce-Address: from@example.org
//  	To: to@example.org
//  	Content-Type: multipart/alternative; boundary="------------080904030200000307060803"
// 
//  	--------------080904030200000307060803
//  	Content-Type: text/plain; charset=utf-8
//  	Content-Transfer-Encoding: quoted-printable
//  	Content-Disposition: inline
// 
//  	This is the plain text part.
//  	--------------080904030200000307060803
//  	Content-Type: text/watch-html; charset=utf-8
//  	Content-Disposition: inline
//  	Content-Transfer-Encoding: quoted-printable
// 
//  	<b>This is the Watch HTML part</b>
//  	--------------080904030200000307060803--

//  Create the text/html MIME part and add it.
Chilkat.Mime partHtml = new Chilkat.Mime();
partHtml.ContentType = "text/html";
partHtml.Charset = "utf-8";
partHtml.Disposition = "inline";
partHtml.Encoding = "quoted-printable";
partHtml.SetBody("<p>This is the standard HTML part</p>");
mime.AppendPart(partHtml);

Debug.WriteLine(mime.GetMime());
Debug.WriteLine("--");

//  We now have this MIME:

//  	MIME-Version: 1.0
//  	Date: Fri, 02 Jun 2017 09:17:06 -0500
//  	Message-ID: <E6F1F17104442EA09740322D3E2E78806C87FB80@CHILKAT13>
//  	X-Priority: 3 (Normal)
//  	Subject: Apple Watch Example
//  	From: from@example.org
//  	CKX-Bounce-Address: from@example.org
//  	To: to@example.org
//  	Content-Type: multipart/alternative; boundary="------------080904030200000307060803"
// 
//  	--------------080904030200000307060803
//  	Content-Type: text/plain; charset=utf-8
//  	Content-Transfer-Encoding: quoted-printable
//  	Content-Disposition: inline
// 
//  	This is the plain text part.
//  	--------------080904030200000307060803
//  	Content-Type: text/watch-html; charset=utf-8
//  	Content-Disposition: inline
//  	Content-Transfer-Encoding: quoted-printable
// 
//  	<b>This is the Watch HTML part</b>
//  	--------------080904030200000307060803
//  	Content-Type: text/html; charset=utf-8
//  	Content-Disposition: inline
//  	Content-Transfer-Encoding: quoted-printable
// 
//  	<p>This is the standard HTML part</p>
//  	--------------080904030200000307060803--

//  Load the email object with this MIME, and we're good to go..
email.SetFromMimeText(mime.GetMime());
Debug.WriteLine(email.GetMime());