Objective-C
Send HTML Email with Embedded Image Loaded from Memory

Demonstrates how to compose an HTML email with an embedded image where the image data is loaded directly from memory.
Chilkat Objective-C Downloads

Objective-C
#import <CkoFileAccess.h>
#import <CkoMailMan.h>
#import <CkoEmail.h>
#import <NSString.h>
#import <CkoStringBuilder.h>

BOOL success = NO;

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

// First load image data into memory.
// This example loads image data from a file.
// However, your application could get the image data from any other source, such as
// from a database.
CkoFileAccess *fac = [[CkoFileAccess alloc] init];
NSData imageBytes;
imageBytes = [fac ReadEntireFile: @"qa_data/jpg/starfish.jpg"];

// 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 = @"HTML Email with Image Loaded from In-Memory Bytes";
email.From = @"Chilkat Support <my-office365-user@mydomain.com>";
[email AddTo: @"Chilkat Support" emailAddress: @"support@chilkatsoft.com"];

NSString *contentIdStarfish = [email AddRelatedData: @"starfish.jpg" in: imageBytes];
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]];

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