PHP mail not working for some reason

If you are using Ubuntu and it seem sendmail is not in /usr/sbin/sendmail, install sendmail using the terminal with this command:

sudo apt-get install sendmail

and then run reload the PHP page where mail() is written. Also check your spam folder.

This might be the issue of your SMTP config in your php.ini file.

Since you new to PHP, You can find php.ini file in your root directory of PHP installation folder and check for SMTP = and smtp_port= and change the value to

SMTP = your mail server e.g) mail.yourdomain.com
smtp_port = 25(check your admin for original port)

In case your server require authentication for sending mail, use PEAR mail function.

This is probably a configuration error. If you insist on using PHP mail function, you will have to edit php.ini.

If you are looking for an easier and more versatile option (in my opinion), you should use PHPMailer.