Objective-C

SMTP GMail Send using App Password

See more GMail SMTP/IMAP/POP Examples

Demonstrates how to authenticate using an app password with GMail for SMTP (port 465 using implicit SSL/TLS). Objective-C

#import <CkoMailMan.h>

BOOL success = NO;

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

//  Starting May 30, 2022, Google will no longer support the use of third-party apps or devices 
//  which ask you to sign in to your Google Account using only your username and password.

//  Instead of authenticating with your GMail username/password, a GMail user can create an App Password
//  and then login using their username/app_password.   It's literally the same, except it allows a GMail
//  account owner to isolate passwords to specific applications.

//  The Gmail account owner would first need to make sure she has 2-Step Verification setup for her account.
//  Note: The 2FA verification is not a factor when authenticating with an app password. The 2FA is required
//  to setup app passwords in the Google account console.  See Sign in with App Passwords

//  After the GMail account owner has setup his app password, he simply uses the app password instead of his GMail account password.

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

mailman.SmtpHost = @"smtp.gmail.com";

mailman.SmtpUsername = @"user@gmail.com";
mailman.SmtpPassword = @"srnyyvqajocnsvdp";

mailman.SmtpSsl = YES;
mailman.SmtpPort = [NSNumber numberWithInt:465];

success = [mailman SmtpConnect];
if (success == NO) {
    NSLog(@"%@",mailman.LastErrorText);
    return;
}

success = [mailman SmtpAuthenticate];
if (success == NO) {
    NSLog(@"%@",mailman.LastErrorText);
    return;
}

NSLog(@"%@",@"SMTP Success!");