(Swift 3,4,5...) 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).

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // 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.

    let mailman = CkoMailMan()!

    mailman.smtpHost = "smtp.gmail.com"

    mailman.smtpUsername = "user@gmail.com"
    mailman.smtpPassword = "srnyyvqajocnsvdp"

    mailman.smtpSsl = true
    mailman.smtpPort = 465

    var success: Bool = mailman.smtpConnect()
    if success == false {
        print("\(mailman.lastErrorText!)")
        return
    }

    success = mailman.smtpAuthenticate()
    if success == false {
        print("\(mailman.lastErrorText!)")
        return
    }

    print("SMTP Success!")

}