I recommend using a 3rd party service for sending email. They usually offer SMTP support, and great logging and analytics. Especially on a shared host, where email is locked down, and a "naughty neighbor" can quickly get the server/IP you're emailing from blacklisted.
The services I recommend and use:
To configure email, in your
env.php file, setup the following:
MAIL_DRIVER=smtp MAIL_FROM_ADDRESS=[CHANGE] MAIL_FROM_NAME="[CHANGE]" MAIL_HOST=[ADDRESS] MAIL_PORT=[PORT] MAIL_ENCRYPTION=tls MAIL_USERNAME= MAIL_PASSWORD=