<?php
// Function to change email sender
function new_sender_email( $original_email_address ) {
    return 'hello@custom.com';
}

// Function to change sender name
function new_sender_name( $original_email_from ) {
	return 'Custom Name';
}

// Hooking up our functions to WordPress filters
add_filter( 'wp_mail_from', __NAMESPACE__ . '\\new_sender_email' );
add_filter( 'wp_mail_from_name', __NAMESPACE__ . '\\new_sender_name' );
?>