gmail, smtp. The box is blocking. How to send mail via SMTP?

Question

gmail

$smtpServerHost = 'ssl://smtp.gmail.com';
$smtpServerHostPort = 25;//465;
$smtpServerUser = '***@gmail.com';
$smtpServerUserPassword = '****';
I send mail... but in the answer silence. the google mail box swears at the login attempt, which was blocked.

Answer 1

unfortunately, without extrasensory skills it is difficult to understand what you are doing wrong)
what type of authorization is used (PLAIN, LOGIN, CRAM-MD5, etc.)? Maybe you're formatting requests incorrectly (look at wikipedia and rfc, for example this one )
maybe you should pay attention to other ways of interacting with gmail - imap , pop3
also gmail has api

Answer 2

I think this is your case => https://support.google.com/a/answer/166852?hl=ru
Write to Google support and ask to unlock the mailbox