Allow Less Secure Apps Gmail Setting. On the left navigation panel, click on security. Turn on allow less secure apps access google account steps.
(note to google apps users: Log in to your google account. Sign in to your gmail account.
Turn on less secure apps as domain admin.
You may also check the gmail article on this subject. To check or change your settings, sign in to gmail then open your google account settings. Lalu aktifkan allow less secure apps ke on. Enabling less secure apps in gmail sometimes email accounts set up through googlemail (gmail) require an additional setting to be changed in gmail itself to allow usage of email through guide.