(Objective-C) Create Non-Multipart Email with XML Body that is an Attachment

See more SMTP Examples

Creates an email where the only body is a binary WAV file. The technique used in the example could be applied to other binary files, such as PDF, MS-WORD docs, Excel docs, etc.

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

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

// The goal of this example is to create an email that has this MIME format,
// where the body of the email is XML using base64 encoding, 
// and the Content-Type and Content-Disposition are set as indicated.

// Date: Wed, 23 Aug 2023 09:01:52 +0200 (CEST)
// From: joe@example1.com
// Subject: [v=EMCS.NL][a=NL****][k=****][s=0]
// To: mary@example2.com
// MIME-Version: 1.0
// Content-Type: application/octet-stream; charset=us-ascii; name=6bd8dfe259b3a42c90a28a82b5fc6e77.txt
// Content-Transfer-Encoding: Base64
// Content-Disposition: attachment; filename=6bd8dfe259b3a42c90a28a82b5fc6e77.txt
// Message-Id: <......>
// 
// <multi-line base64 encoded XML here>

BOOL success = YES;

NSString *xmlBody = @"<ie:IE801 xmlns:ie=\"urn:publicid:-:EC:DGTAXUD:EMCS:PHASE4:IE801:V3.01\" xmlns:tms=\"urn:publicid:-:EC:DGTAXUD:EMCS:PHASE4:TMS:V3.01\">....</ie:IE801>";

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

// Add subject, TO, FROM, etc.
email.Subject = @"[v=EMCS.NL][a=NL****][k=****][s=0]";
email.From = @"joe@example1.com";
success = [email AddTo: @"Mary" emailAddress: @"mary@example2.com"];

email.Body = xmlBody;

[email AddHeaderField: @"Content-Transfer-Encoding" fieldValue: @"Base64"];
[email AddHeaderField: @"Content-Type" fieldValue: @"application/octet-stream; charset=us-ascii; name=6bd8dfe259b3a42c90a28a82b5fc6e77.txt"];
[email AddHeaderField: @"Content-Disposition" fieldValue: @"attachment; filename=6bd8dfe259b3a42c90a28a82b5fc6e77.txt"];

// Your email is ready to send
CkoMailMan *mailman = [[CkoMailMan alloc] init];

mailman.SmtpHost = @"smtp.my_mail_server.com";
mailman.SmtpUsername = @"myUsername";
mailman.SmtpPassword = @"myPassword";
mailman.SmtpPort = [NSNumber numberWithInt:465];
mailman.SmtpSsl = YES;
mailman.StartTLS = YES;

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

success = [mailman CloseSmtpConnection];
if (success != YES) {
    NSLog(@"%@",@"Connection to SMTP server not closed cleanly.");
}

NSLog(@"%@",@"Mail Sent!");