Customize “Account Activated” mail

Hi @phalancs,

I hope you are doing well today!

This is the default WordPress notification email. To customize the email notification sent after the approval of user registration, you can use the following code snippet as mu-plugin.

<?php
add_filter(
	'forminator_custom_form_user_registration_before_insert',
	function ( $new_user_data ) {
		add_action( 'user_register', 'wpmudev_forminator_filter_user_register_email', 10, 2 );

		return $new_user_data;
	}
);


function wpmudev_forminator_filter_user_register_email( int $user_id, array $userdata ) {
	remove_action( 'user_register', 'wpmudev_forminator_filter_user_register_email' );

	add_filter(
		'wp_mail',
		function ( array $mail_args ) use ( $user_id, $userdata ) {
			$needle       = 'Account Activated';
			$filter_email = substr( $mail_args['subject'], - strlen( $needle ) ) === $needle;

			if ( $filter_email ) {
				$userdata['user_id']  = $user_id;
				$mail_args['message'] = wpmudev_forminator_registration_email_template( $userdata );
				$mail_args['headers'] = array( 'Content-Type: text/html; charset=UTF-8' );

				remove_action( 'user_register', 'wpmudev_forminator_filter_user_register_email', 10 );
			}

			return $mail_args;
		}
	);
}


function wpmudev_forminator_registration_email_template( array $user_data = array() ) {
	if ( empty( $user_data ) ) {
		return __( 'Hey! You have registered succesfully!' );
	}

	extract( $user_data );

	$user            = get_user_by( 'id', $user_id );
	$site_name       = get_bloginfo( 'name' );
	$home_url        = home_url();
	$login_page      = wp_login_url();
	$key             = get_password_reset_key( $user );
	$pass_reset_link = network_site_url( "wp-login.php?action=rp&key={$key}&login=" . rawurlencode( $user_login ), 'login' );


	$tpl = "Dear {$user_login},

<p>Your account on {$site_name} has been activated! Please find your login details below.</p>


<p>Login page: {$login_page}</p>

<p>Username: qwe2</p>

<p>
Password: Use the password that you submitted when registering your account, or set a new password at the link below.<br />
<a href=\"{$pass_reset_link}\">{$pass_reset_link}</a>
</p>


<p>This message was sent from http://single2.local</p>";

	do_action( 'retrieve_password_key', $user_login, $key );

	return $tpl;
}

You can find more information below on how to use mu-plugins.
https://wpmudev.com/docs/using-wordpress/installing-wordpress-plugins/#installing-mu-plugins
and
https://ww.wp.xz.cn/support/article/must-use-plugins/

Please let us know if you need further help or clarification on this.

Kind regards,
Zafer