Customer is not receiving email

I have the same problem with emails ??

WC Version: 2.5.2

WP Version: 4.4.2
WP Multisite: –
WP Memory Limit: 256 MB
WP Debug Mode: –
Language: en_US
Server Environment
Server Info: Apache
PHP Version: 5.6.17
PHP Post Max Size: 256 MB
PHP Time Limit: 600
PHP Max Input Vars: 1000
SUHOSIN Installed: –
MySQL Version: 5.6.29
Max Upload Size: 256 MB
Default Timezone is UTC: ?
fsockopen/cURL: ?
SoapClient: ?
DOMDocument: ?
GZip: ?
Multibyte String: ?
Remote Post: ?
Remote Get: ?
Database
WC Database Version: 2.5.2
woocommerce_sessions ?
woocommerce_api_keys ?
woocommerce_attribute_taxonomies ?
woocommerce_termmeta ?
woocommerce_downloadable_product_permissions ?
woocommerce_order_items ?
woocommerce_order_itemmeta ?
woocommerce_tax_rates ?
woocommerce_tax_rate_locations ?
Active Plugins (20)
iThemes Security by iThemes – 5.2.1
Black Studio TinyMCE Widget by Black Studio – 2.2.8
Contact Form 7 by Takayuki Miyoshi – 4.3.1
Dynamic Widgets by Qurl – 1.5.11
Easy Bootstrap Shortcode by oscitas – 4.5.3
Limit Login Attempts by Johan Eenfeldt – 1.7.1
TinyMCE Advanced by Andrew Ozz – 4.2.8
Uji Countdown by Wpmanage.com – 2.0.6
W3 Total Cache by Frederick Townes – 0.9.4.1
WC Custom Thank You by Nicola Mustone – 1.0.0
WooCommerce Cart Stock Reducer by James Golovich – 1.25
WooCommerce German (de_DE) by David Decker – DECKERWEB – 3.2.0
Sofort payment gateway by Awesome UG – 1.1.17
Woocommerce Poor Guys Swiss Knife by Uli Hake – 2.2.4
WooCommerce Simply Order Export Add-on by Ankit Gade – 1.8
WooCommerce Simply Order Export by Ankit Gade – 2.0.5
WooCommerce by WooThemes – 2.5.2
WooThemes Helper by WooThemes – 1.5.9
Yoast SEO by Team Yoast – 3.0.7
WP Content Copy Protection by RSPublishing – 1.1.8.3
Settings
Force SSL: –
Currency EUR (€)
Currency Position right_space
Thousand Separator ,
Decimal Separator .
Number of Decimals 2
API
API Enabled: ?
API Version: 3.1.0
WC Pages
Shop Base: #92 – /shop/
Cart: #93 – /warenkorb/
Checkout: #94 – /kasse/
My Account: Page not set
Taxonomies
Product Types: external (external), grouped (grouped), simple (simple), variable (variable), wcpb (wcpb), yith_bundle (yith_bundle)
Theme
Name: Responsive
Version: 1.9.7.8
Author URL: https://cyberchimps.com
Child Theme: ? – If you’re modifying WooCommerce on a parent theme you didn’t build personally, then we recommend using a child theme. See: How to create a child theme
WooCommerce Support: ?
Templates
Overrides (WooCommerce): responsive/woocommerce/emails/admin-new-order.php,
responsive/woocommerce/emails/customer-completed-order.php,
responsive/woocommerce/emails/customer-processing-order.php

Did you try using a SMTP plugin?

YES but has no effect

Does the e-mail work at all?
Try using this code, make a test order on your website, and see if you receive an order when changing an order status to processing.

add_action("woocommerce_order_status_changed", "my_awesome_publication_notification");

function my_awesome_publication_notification($order_id, $checkout=null) {
   global $woocommerce;
   $order = new WC_Order( $order_id );
   if($order->status === 'processing' ) {
      // Create a mailer
      $mailer = $woocommerce->mailer();

      $message_body = __( 'Thank you for your order.' );

      $message = $mailer->wrap_message(
        // Message head and message body.
        sprintf( __( 'Order %s is now processing.' ), $order->get_order_number() ), $message_body );

      // Cliente email, email subject and message.
     $mailer->send( $order->billing_email, sprintf( __( 'Order %s is now processing.' ), $order->get_order_number() ), $message );
     }

   }

Thanks for your help but still does not work

Don’t mess with code unless you’re really comfortable with what you’re doing. This isn’t a code issue.

Emails send when the order status is changed to ‘processing’, ‘on-hold’ or ‘completed’. Check your orders have this status.

You can see if emails are ‘sending’ but you’re just not receiving them with https://www.ads-software.com/plugins/wp-mail-logging/ Don’t forget to check your spam box.

If not spammed, but logged as sending, it may be a server issue. Try using a different method of email sending with https://www.ads-software.com/plugins/wp-smtp/

You can also combine https://www.ads-software.com/plugins/wp-smtp/ with https://www.mandrill.com/ for improved deliverability and logging. I recommend this anyway.