Sample code for 30+ languages & platforms
Objective-C

MailMan GetSentToEmailAddrs

Demonstrates how to get the email addresses accepted by the SMTP server during an SMTP send.

Chilkat Objective-C Downloads

Objective-C
#import <CkoMailMan.h>
#import <CkoEmail.h>
#import <CkoStringArray.h>

BOOL success = NO;

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

//  Demonstrates how to get the successful recipients for the last email sent.

//  Note: Success does not ensure actual delivery, nor does it mean the email address is actually valid.
//  It may be that the email address is invalid and will get bounced at the destination.

//  Also: An SMTP client (such as Chilkat, Mozilla Thunderbird, etc.) is only responsible for "handing off" the email to the SMTP server 
//  for delivery (either to a local mailbox, or to a remote mailbox where the SMTP server acts as a relay). 
//  The SMTP client's task is ended when the SMTP protocol exchange is completed, and the SMTP server says "OK, I've got it and I'll take it from here.". 
//  If the email never actually gets delivered, then there is a problem downstream of the Chilkat-->SMTP server handoff.

CkoMailMan *mailman = [[CkoMailMan alloc] init];

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 API...";
email.Body = @"Testing for Chilkat API...";
email.From = @"Chilkat Support <my-office365-user@mydomain.com>";
success = [email AddTo: @"Chilkat Admin" emailAddress: @"admin@chilkatsoft.com"];
success = [email AddTo: @"Chilkat Support" emailAddress: @"support@chilkatsoft.com"];
//  To add more recipients, call AddTo, AddCC, or AddBcc once per recipient.

//  Allow SendEmail to succeed even if some recipients are rejected immediately
//  by the SMTP server.
mailman.AllOrNone = NO;

//  Call SendEmail to connect to the SMTP server and send.
//  The connection (i.e. session) to the SMTP server remains
//  open so that subsequent SendEmail calls may use the
//  same connection.  
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!");

//  Examine which email addresses were accepted by the SMTP server during the SMTP conversation. 
//  (i.e. during the SendEmail)
CkoStringArray *acceptedAddrs = [mailman GetSentToEmailAddrs];
int numAddrs = [acceptedAddrs.Count intValue];
int i = 0;
while (i < numAddrs) {
    NSLog(@"%@%d%@%@",@"Accepted recipient ",i,@": ",[acceptedAddrs GetString: [NSNumber numberWithInt: i]]);
    i = i + 1;
}