Change default e-mail address and name on outgoing e-mails sent by WordPress.

change email address and name wordpress.php

<?php
// Change default e-mail address and name on outgoing e-mails sent by WordPress.
// code goes in your theme functions.php

// New Email
function sb_new_mail_from( $email ) {
	$email = 'info@yoursite.com'; // change
	return $email;
}
add_filter( 'wp_mail_from', 'sb_new_mail_from' );

// New Name
function sb_new_mail_from_name( $name ) {
	$name = 'Your Website Name'; // change
	return $name;
}
add_filter( 'wp_mail_from_name', 'sb_new_mail_from_name' );