Email is not Delivering using Sendgrid SMTP - email

Question

I am using CI library to send an email using Sendgrid smtp.
but it is not giving any response, neither email is sending.
$this->load->library('email');
$config['protocol'] = 'smtp';
$config['smtp_host'] = 'smtp.sendgrid.net';
$config['smtp_user'] = 'api key name';
$config['smtp_pass'] = 'api key';
$config['smtp_port'] = '587';
$config['smtp_keepalive'] = 'TRUE';
$this->email->initialize($config);
$this->email->from('test#test.com', FROM_NAME);
$this->email->to($email);
extract($arr_var);
$sub=addslashes($row['subject']);
eval("\$subject= \"$sub\";");
$body=addslashes($row['message']);
eval("\$message= \"$body\";");
if ($subject!='') {
$this->email->subject(stripslashes($subject));
} else {
$this->email->subject($row['subject'].' - '.$this->config->item('app_title'));
}
$this->email->message($message);
$bool=$this->email->send();
Using above code i am sending en email CI v3 but it I am not receiving any email?

Answer 1

Twilio SendGrid developer evangelist here.
Two things stand out to me here.
First, where you set the smtp username, it should be the string "apikey" (see the instructions for sending with SMTP here).
Second, the from address you are sending from is "test#test.com". SendGrid requires you to verify the identity you send from. You either need go through Single Sender Verification or Domain Authentication and then use an email address that you have verified to send the emails from.
Once you have sorted those two bits out, your emails should send successfully.