Why is the mail() function disabled?

For security reasons, the option to send emails via PHP’s mail() function is disabled.

• To get your forms working, we recommend following the instructions at the following link:
  https://www.sitioshispanos.com/es/knowledgebase/161/PHPMailer.html\
• If your site is WordPress, you can also follow these steps:
  https://blog.sitioshispanos.com/tutoriales/enviando-emails-autenticados-en-wordpress-utilizando-wp-smtp/\
• If you use Joomla:
  https://blog.sitioshispanos.com/constructor-web/como-configurar-joomla-para-enviar-correos-electronicos-usando-smtp/\
• If you use Moodle:
  https://blog.sitioshispanos.com/moodle/configurar-smtp-para-el-envio-de-correos-en-moodle/