Objective-C
Create AMP for Email

Demonstrates how to create an email that has the AMP for Email Format.
See AMP for Email specification for more information.
Chilkat Objective-C Downloads

Objective-C
#import <CkoEmail.h>
#import <CkoStringBuilder.h>

BOOL success = NO;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

CkoEmail *email = [[CkoEmail alloc] init];

email.Subject = @"Sample AMP for Email";
email.From = @"mary@example.com";
[email AddTo: @"Joe" emailAddress: @"joe@example.com"];

// Create the following AMP for Email HTML

// <!doctype html>
// <html amp4email>
// <head>
//   <meta charset="utf-8">
//   <style amp4email-boilerplate>body{visibility:hidden}</style>
//   <script async src="https://cdn.ampproject.org/v0.js"></script>
// </head>
// <body>
// Hello, world.
// </body>
// </html>

CkoStringBuilder *sbAmp4Html = [[CkoStringBuilder alloc] init];
[sbAmp4Html Append: @"<!doctype html>"];
[sbAmp4Html Append: @"<html amp4email>"];
[sbAmp4Html Append: @"<head>"];
[sbAmp4Html Append: @"<meta charset=\"utf-8\">"];
[sbAmp4Html Append: @"<style amp4email-boilerplate>body{visibility:hidden}</style>"];
[sbAmp4Html Append: @"<script async src=\"https://cdn.ampproject.org/v0.js\"></script>"];
[sbAmp4Html Append: @"</head>"];
[sbAmp4Html Append: @"<body>"];
[sbAmp4Html Append: @"Hello, world."];
[sbAmp4Html Append: @"</body>"];
[sbAmp4Html Append: @"</html>"];

// We want to build a multipart/alternative email, where the 1st alternative body
// is text/plain, the 2nd is text/x-amp-html, and the last is text/html.
// (Some email clients will only render the last MIME part, so we recommend placing the text/x-amp-html MIME part before the text/html MIME part.)

// First create a plain-text email body:
[email AddPlainTextAlternativeBody: @"Hello World in plain text!"];

// Now add the text/x-amp-html.
[email SetTextBody: [sbAmp4Html GetAsString] contentType: @"text/x-amp-html"];

// Now add an HTML body..
[email AddHtmlAlternativeBody: @"<span>Hello World in HTML!</span>"];

// See what we have:
NSLog(@"%@",[email GetMime]);

// This is the result:

// MIME-Version: 1.0
// Date: Thu, 30 May 2019 09:37:56 -0500
// Message-ID: <923A689FF657170A9F662B4CE87978AB1EBD4DBD@CHILKATSLICE>
// Content-Type: multipart/alternative;
//  boundary="------------040205090807060906020803"
// X-Priority: 3 (Normal)
// Subject: Sample AMP for Email
// From: mary@example.com
// To: Joe <joe@example.com>
// 
// --------------040205090807060906020803
// Content-Transfer-Encoding: 7bit
// Content-Type: text/plain; charset=us-ascii; format=flowed
// 
// Hello World in plain text!
// --------------040205090807060906020803
// Content-Transfer-Encoding: 7bit
// Content-Type: text/x-amp-html; charset=us-ascii
// 
// <!doctype html><html amp4email><head><meta charset="utf-8"><style amp4email-boilerplate>body{visibility:hidden}</style><script async src="https://cdn.ampproject.org/v0.js"></script></head><body>Hello, world.</body></html>
// --------------040205090807060906020803
// Content-Transfer-Encoding: 7bit
// Content-Type: text/html; charset=us-ascii
// 
// <span>Hello World in HTML!</span>
// 
// --------------040205090807060906020803--