CodeIgnititer 4: Unable to send email using PHP SMTP - php

Question

I read all the other answers related to that question, but none of them help.
When I try to run the following setup either on my localhost or my production server, I get the following error message:
Unable to send email using PHP SMTP. Your server might not be configured to send mail using this method.
I installed CodeIgniter 4 and added the following to .env:
email.production.protocol = smtp
email.production.SMTPHost = my.server.com
email.production.SMTPUser = My#Mail.com
email.production.SMTPPass = MyPassword
email.production.SMTPCrypto = ssl
email.production.SMTPPort = 465
email.production.SMTPFromName = "Foo Bar"
For port 465 or 587 and crypto ssl or tsl I tried every possible option.
In the app/Config/Email.php the setting public $newline = "\r\n"; is already set (Suggestion coming from here.
I am successfully able to run
telnet my.server.com 465
telnet my.server.com 587
Then I added the following code to the end of app/Config/Email.php:
public function __construct()
{
$this->protocol = $_ENV['email.production.protocol'];
$this->SMTPHost = $_ENV['email.production.SMTPHost'];
$this->SMTPUser = $_ENV['email.production.SMTPUser'];
$this->SMTPPass = $_ENV['email.production.SMTPPass'];
$this->SMTPPort = $_ENV['email.production.SMTPPort'];
$this->SMTPCrypto = $_ENV['email.production.SMTPCrypto'];
$this->fromEmail = $_ENV['email.production.SMTPUser'];
$this->fromName = $_ENV['email.production.SMTPFromName'];
}
In my Controller I added a function with:
$email = \Config\Services::email();
$email->setSubject("Test");
$email->setMessage("Test");
$email->setTo("myaddress#example.com");
if ($email->send(false)) {
return $this->getResponse([
'message' => 'Email successfully send',
]);
} else {
return $this
->getResponse(
["error" => $email->printDebugger()],
ResponseInterface::HTTP_CONFLICT
);
}
Calling this function produces the error message described above.
I assume that this has nothing to do with the server configuration as the error message describes, because the is happening on localhost and production.
Update: This must have something to do with the CI setup. No matter what server I try, even with completely incorrect values (e.g. incorrect password) the error is exactly the same.

Answer 1

I usually use smtp gmail to send email for my client. the most important of 'send email by smtp gmail' is you must update your Gmail Security rules:
In your Gmail Account, click on Manage your Google Account
click tab Security
then, turn 'less secure app access' to 'ON'
After that, you set your 'app\config\EMail.php' like this:
public $protocol = 'smtp';
public $SMTPHost = 'smtp.gmail.com';
public $SMTPUser = 'your.googleaccount#gmail.com';
public $SMTPPass = 'yourpassword';
public $SMTPPort = 465;
public $SMTPCrypto = 'ssl';
public $mailType = 'html';
Last, you can create sendEmai function on controller like this:
$email = \Config\Services::email();
$email->setFrom('emailsender#gmail.com', 'Mr Sender');
$email->setTo('emailreceiver#gmail.com');
$email->setSubject('Test Subject');
$email->setMessage('Test My SMTP');
if (!$email->send()) {
return false;
}else{
return true;
}