How to send email programmatically

If you want to send an email through WordPress and without your theme and plugins, you can do it easily with the code below:

wp_mail( string|string[] $to, string $subject, string $message, string|string[] $headers = '', string|string[] $attachments = array() )

You can fill these parameters :

• $to refer to the mail address (can be an array if there are multiple addresses)
• $subject is your mail title
• $message is the content of the mail. If you want to send your content with HTML, you can change your headers parameter (explained below)
• $headers allow you to add additional headers. For example, for HTML, you can have this line :

$headers = array('Content-Type: text/html; charset=UTF-8');

Be careful if you use variables for your addresses or your mail content with $_POST or $_GET and content from your WordPress users. You should secure this kind of string to be sure your WordPress is secure.