IPhone : MailCore won't login: mailcore Code=19 "unknown error code"

BOOL success = [CTSMTPConnection sendMessage:msg
                                      server:SMTPServer
                                    username:MyEmail
                                    password:Password
                                        port:587
                              connectionType:CTSMTPConnectionTypeStartTLS
                                     useAuth:YES
                                       error:&anyError];

returns NO

becasuse gmail blocks it:

Hi ...,

We recently blocked a sign-in attempt to your Google Account [...@gmail.com].

Sign in attempt details Date & Time: Friday, March 27, 11:50 AM EDT Location: ...., .., USA

If this wasn't you Please review your Account Activity page at https://security.google.com/settings/security/activity to see if anything looks suspicious. Whoever tried to sign in to your account knows your password; we recommend that you change it right away.

If this was you You can switch to an app made by Google such as Gmail to access your account (recommended) or change your settings at https://www.google.com/settings/security/lesssecureapps so that your account is no longer protected by modern security standards.

To learn more, see https://support.google.com/accounts/answer/6010255.

Sincerely, The Google Accounts team

Is there a way around it besides the one that they suggest https://www.google.com/settings/security/lesssecureapps

or any other thoughts? Thanks