(Objective-C) Send HTML Email with Image to iPhone

Demonstrates how to compose an HTML email with an embedded image that will display correctly on an iPhone. This example produces an email that looks like this on the iPhone:

Chilkat Objective-C Library Downloads

MAC OS X (Cocoa) Libs

iOS Libs

#import <CkoMailMan.h>
#import <CkoEmail.h>
#import <NSString.h>
#import <CkoStringBuilder.h>

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

// The mailman object is used for sending and receiving email.
CkoMailMan *mailman = [[CkoMailMan alloc] init];

// Use your SMTP server hostname.  This example uses office365, but it could be any SMTP server..
mailman.SmtpHost = @"outlook.office365.com";
mailman.SmtpPort = [NSNumber numberWithInt:587];
mailman.StartTLS = YES;

// Set the SMTP login/password
mailman.SmtpUsername = @"OFFICE365-SMTP-LOGIN";
mailman.SmtpPassword = @"OFFICE365-SMTP-PASSWORD";

// Create a new email object
CkoEmail *email = [[CkoEmail alloc] init];
email.Subject = @"Testing for Chilkat SMTP API...";
email.Body = @"Testing for Chilkat SMTP API...";
email.From = @"Chilkat Support <my-office365-user@mydomain.com>";
[email AddTo: @"Chilkat Support" emailAddress: @"support@chilkatsoft.com"];

// For whatever reason, the iPhone's email program requires
// images in HTML to be referenced by Content-ID.  Therefore,
// we must add the image like this:
NSString *contentIdStarfish = [email AddRelatedFile: @"qa_data/jpg/starfish.jpg"];
if (email.LastMethodSuccess != YES) {
    NSLog(@"%@",email.LastErrorText);
    return;
}

// The src attribute for the image tag is set to the contentIdStarfish:
CkoStringBuilder *sbHtml = [[CkoStringBuilder alloc] init];
[sbHtml Append: @"<html><body><p>This is an HTML email with an embedded image.</p>"];
[sbHtml Append: @"<p><img src=\"cid:CONTENT_ID_STARFISH\" /></p></body></html>"];
int numReplacements = [[sbHtml Replace: @"CONTENT_ID_STARFISH" replacement: contentIdStarfish] intValue];

[email SetHtmlBody: [sbHtml GetAsString]];

BOOL success = [mailman SendEmail: email];
if (success != YES) {
    NSLog(@"%@",mailman.LastErrorText);
}
else {
    NSLog(@"%@",@"Mail Sent!");
}