Configure a SMTP server to send email from your WordPress site
SMTP Mailer plugin allows you to configure a mail server which handles all outgoing email from your website. It takes control of the wp_mail function and use SMTP instead of the PHP mail() function.
Plugin Repository URL: https://wordpress.org/plugins/smtp-mailer/
Plugin Author URL: https://wphowto.net/
SMTP Mailer Settings:
*SMTP Host: Your outgoing mail server.