wp_mail declared by woocommerce

Hello @mindofmedia

We hope this message finds you well.

Thank you for reaching out to our Support team. We are saddened and concerned that you have to face this issue. Could you please confirm the version of Post SMTP & WooCommerce you are using. As I just tested it on my end & found to be dully working. Sharing your diagnostic test report would be invaluable in grabbing a better understanding of your environment.

Looking forward to your response & an opportunity to assist you.

Warm regards,
Support Team – WP Experts

Hello,

Thanks for your reply.
Woocommerce: 9.6.2
Post SMTP: 3.1.1

<br>### WordPress Environment ###<br><br>WordPress address (URL): https://dedondershells.com<br>Site address (URL): https://dedondershells.com<br>WC Version: 9.6.2<br>Legacy REST API Package Version: The Legacy REST API plugin is not installed on this site.<br>Action Scheduler Version: ? 3.9.0<br>Log Directory Writable: ?<br>WP Version: 6.7.2<br>WP Multisite: –<br>WP Memory Limit: 256 MB<br>WP Debug Mode: –<br>WP Cron: ?<br>Language: en_US<br>External object cache: –<br><br>### Server Environment ###<br><br>Server Info: Apache<br>PHP Version: 7.4.33<br>PHP Post Max Size: 300 MB<br>PHP Time Limit: 60<br>PHP Max Input Vars: 1000<br>cURL Version: 7.88.1<br>OpenSSL/3.0.15<br><br>SUHOSIN Installed: –<br>MySQL Version: 5.5.5-10.11.6-MariaDB-hetzner1<br>Max Upload Size: 300 MB<br>Default Timezone is UTC: ?<br>fsockopen/cURL: ?<br>SoapClient: ?<br>DOMDocument: ?<br>GZip: ?<br>Multibyte String: ?<br>Remote Post: ?<br>Remote Get: ?<br><br>### Database ###<br><br>WC Database Version: 9.6.2<br>WC 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6<br>product: 6292<br>revision: 26<br>shop_coupon: 1<br>shop_order: 2154<br>team: 4<br>testimonials: 5<br>wpcf7_contact_form: 1<br>yith-wcbm-badge: 1<br><br>### Security ###<br><br>Secure connection (HTTPS): ?<br>Hide errors from visitors: ?<br><br>### Active Plugins (34) ###<br><br>Auto Image Resizer Pro: by Dennis Hoppe – 1.2.9<br>Breadcrumb NavXT: by John Havlik – 7.4.1<br>Broken Link Checker: by WPMU DEV – 2.4.2<br>Burst Statistics - Privacy-Friendly Analytics for WordPress: by Burst Statistics - Stats & Analytics for WordPress – 1.7.5<br>Classic Editor: by WordPress Contributors – 1.6.7<br>Anti-Spam by CleanTalk: by CleanTalk - Anti-Spam Protection  – 6.50<br>Contact Form 7: by Takayuki Miyoshi – 6.0.3<br>Duplicate Page: by mndpsingh287 – 4.5.4<br>Spreadsheet Price Change for WooCommerce and WP E-commerce - Light: by Holest Engineering – 2.4.37<br>Flamingo: by Takayuki Miyoshi – 2.5<br>Google Analytics Dashboard for WP (GADWP): by ExactMetrics – 8.3.1<br>Site Kit by Google: by Google – 1.146.0<br>Anti-Malware Security and Brute-Force Firewall: by Eli Scheetz – 4.23.73<br>Login Logo: by Mark Jaquith – 0.10.3<br>Mailster for WooCommerce: by EverPress – 2.0.2<br>Mailster - Email Newsletter Plugin for WordPress (Premium): by EverPress – 4.1.9<br>Pagination by BestWebSoft: by BestWebSoft – 1.2.4<br>Post SMTP: by Post SMTP – 3.1.1<br>Post Types Order: by Nsp Code – 2.3.3<br>QNS Shortcodes & Post Types: by Quite Nice Stuff – 1.0<br>RabbitLoader: by RabbitLoader – 2.22.3<br>Really Simple Security: by Really Simple Security – 9.3.1<br>Security by CleanTalk: by CleanTalk Security – 2.151<br>User Switching: by John Blackbourn – 1.9.1<br>White Label CMS: by www.videousermanuals.com – 2.7.7<br>WooCommerce Search by Product SKU: by Clayton Kriesel [Three Remain Production] – 1.0<br>Extra Product Sorting Options for WooCommerce: by SkyVerge – 2.10.0<br>Google Analytics for WooCommerce: by WooCommerce – 2.1.12<br>WooCommerce New Product Badge: by jameskoster – 0.3.0<br>WooCommerce: by Automattic – 9.6.2<br>Wordfence Security: by Wordfence – 8.0.3<br>Yoast SEO: by Team Yoast – 24.4<br>ManageWP - Worker: by GoDaddy – 4.9.20<br>YITH WooCommerce Wishlist: by YITH – 4.2.0<br><br>### Inactive Plugins (0) ###<br><br><br>### Dropin Plugins () ###<br><br>advanced-cache.php: advanced-cache.php<br>maintenance.php: maintenance.php<br><br>### Must Use Plugins (3) ###<br><br>burst_rest_api_optimizer.php: by  –<br>ManageWP - Worker Loader: by GoDaddy – 1.0.0<br>Security by CleanTalk: Must-Use Module: by CleanTalk Security – 2.0<br><br>### Settings ###<br><br>Legacy API Enabled: –<br>Force SSL: –<br>Currency: EUR (€)<br>Currency Position: left<br>Thousand Separator: .<br>Decimal Separator: ,<br>Number of Decimals: 2<br>Taxonomies: Product Types: external (external)<br>grouped (grouped)<br>simple (simple)<br>variable (variable)<br><br>Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)<br>exclude-from-search (exclude-from-search)<br>featured (featured)<br>outofstock (outofstock)<br>rated-1 (rated-1)<br>rated-2 (rated-2)<br>rated-3 (rated-3)<br>rated-4 (rated-4)<br>rated-5 (rated-5)<br><br>Connected to WooCommerce.com: –<br>Enforce Approved Product Download Directories: –<br>HPOS feature enabled: –<br>Order datastore: WC_Order_Data_Store_CPT<br>HPOS data sync enabled: –<br><br>### Logging ###<br><br>Enabled: ?<br>Handler: Automattic\WooCommerce\Internal\Admin\Logging\LogHandlerFileV2<br>Retention period: 30 days<br>Level threshold: –<br>Log directory size: 362 MB<br><br>### WC Pages ###<br><br>Shop base: #12702 - /<br>Cart: #12703 - /cart/ -  Contains the [woocommerce_cart] shortcode<br>Checkout: #12704 - /checkout/ -  Contains the [woocommerce_checkout] shortcode<br>My account: #12705 - /my-account/<br>Terms and conditions: ? Page not set<br><br>### Theme ###<br><br>Name: Natural Shop<br>Version: 1.4.8<br>Author URL: https://themeforest.net/user/quitenicestuff<br>Child Theme: ? – If you are modifying WooCommerce on a parent theme that you did not build personally we recommend using a child theme. See: How to create a child theme<br>Theme type: Classic theme<br>WooCommerce Support: ?<br><br>### Templates ###<br><br>Overrides: naturalshop/woocommerce/archive-product.php version 2.0.0 is out of date. The core version is 8.6.0<br>naturalshop/woocommerce/cart/cart-empty.php version 2.0.0 is out of date. The core version is 7.0.1<br>naturalshop/woocommerce/cart/cart-item-data.php<br>naturalshop/woocommerce/cart/cart-shipping.php version 2.5.0 is out of date. The core version is 8.8.0<br>naturalshop/woocommerce/cart/cart-totals.php<br>naturalshop/woocommerce/cart/cart.php version 2.3.8 is out of date. The core version is 7.9.0<br>naturalshop/woocommerce/cart/cross-sells.php version 1.6.4 is out of date. The core version is 9.6.0<br>naturalshop/woocommerce/cart/mini-cart.php version 2.5.0 is out of date. The core version is 9.4.0<br>naturalshop/woocommerce/cart/shipping-calculator.php version 2.0.8 is out of date. The core version is 9.5.0<br>naturalshop/woocommerce/checkout/cart-errors.php version 2.4.0 is out of date. The core version is 3.5.0<br>naturalshop/woocommerce/checkout/form-billing.php version 2.1.2 is out of date. The core version is 3.6.0<br>naturalshop/woocommerce/checkout/form-checkout.php version 2.3.0 is out of date. The core version is 9.4.0<br>naturalshop/woocommerce/checkout/form-coupon.php version 2.2 is out of date. The core version is 7.0.1<br>naturalshop/woocommerce/checkout/form-login.php version 2.0.0 is out of date. The core version is 3.8.0<br>naturalshop/woocommerce/checkout/form-pay.php version 2.5.0 is out of date. The core version is 8.2.0<br>naturalshop/woocommerce/checkout/form-shipping.php version 2.2.0 is out of date. The core version is 3.6.0<br>naturalshop/woocommerce/checkout/payment-method.php version 2.3.0 is out of date. The core version is 3.5.0<br>naturalshop/woocommerce/checkout/payment.php version 2.5.0 is out of date. The core version is 8.1.0<br>naturalshop/woocommerce/checkout/review-order.php version 2.3.0 is out of date. The core version is 5.2.0<br>naturalshop/woocommerce/checkout/thankyou.php version 2.2.0 is out of date. The core version is 8.1.0<br>naturalshop/woocommerce/content-product.php version 2.6.1 is out of date. The core version is 9.4.0<br>naturalshop/woocommerce/content-single-product.php version 1.6.4 is out of date. The core version is 3.6.0<br>naturalshop/woocommerce/content-widget-product.php version 2.5.0 is out of date. The core version is 3.5.5<br>naturalshop/woocommerce/global/breadcrumb.php<br>naturalshop/woocommerce/global/form-login.php version 2.1.0 is out of date. The core version is 9.2.0<br>naturalshop/woocommerce/global/quantity-input.php version 2.5.0 is out of date. The core version is 9.4.0<br>naturalshop/woocommerce/global/sidebar.php<br>naturalshop/woocommerce/global/wrapper-end.php version 1.6.4 is out of date. The core version is 3.3.0<br>naturalshop/woocommerce/global/wrapper-start.php version 1.6.4 is out of date. The core version is 3.3.0<br>naturalshop/woocommerce/loop/add-to-cart.php version 2.5.0 is out of date. The core version is 9.2.0<br>naturalshop/woocommerce/loop/loop-end.php<br>naturalshop/woocommerce/loop/loop-start.php version 2.0.0 is out of date. The core version is 3.3.0<br>naturalshop/woocommerce/loop/no-products-found.php version 2.0.0 is out of date. The core version is 7.8.0<br>naturalshop/woocommerce/loop/orderby.php version 2.2.0 is out of date. The core version is 3.6.0<br>naturalshop/woocommerce/loop/pagination.php version 2.2.2 is out of date. The core version is 9.3.0<br>naturalshop/woocommerce/loop/price.php<br>naturalshop/woocommerce/loop/rating.php version 2.0.0 is out of date. The core version is 3.6.0<br>naturalshop/woocommerce/loop/result-count.php version 2.0.0 is out of date. The core version is 9.4.0<br>naturalshop/woocommerce/loop/sale-flash.php<br>naturalshop/woocommerce/myaccount/form-add-payment-method.php version 2.6.0 is out of date. The core version is 7.8.0<br>naturalshop/woocommerce/myaccount/form-edit-account.php version 2.6.0 is out of date. The core version is 9.6.0<br>naturalshop/woocommerce/myaccount/form-edit-address.php version 2.6.0 is out of date. The core version is 9.3.0<br>naturalshop/woocommerce/myaccount/form-login.php version 2.6.0 is out of date. The core version is 9.2.0<br>naturalshop/woocommerce/myaccount/form-lost-password.php version 2.6.0 is out of date. The core version is 9.2.0<br>naturalshop/woocommerce/myaccount/my-account.php version 2.6.0 is out of date. The core version is 3.5.0<br>naturalshop/woocommerce/myaccount/my-address.php version 2.6.0 is out of date. The core version is 9.3.0<br>naturalshop/woocommerce/myaccount/my-downloads.php<br>naturalshop/woocommerce/myaccount/my-orders.php<br>naturalshop/woocommerce/myaccount/orders.php version 2.6.0 is out of date. The core version is 9.5.0<br>naturalshop/woocommerce/myaccount/view-order.php version 2.6.0 is out of date. The core version is 3.0.0<br>naturalshop/woocommerce/notices/error.php version 1.6.4 is out of date. The core version is 8.6.0<br>naturalshop/woocommerce/notices/notice.php version 1.6.4 is out of date. The core version is 8.6.0<br>naturalshop/woocommerce/notices/success.php version 1.6.4 is out of date. The core version is 8.6.0<br>naturalshop/woocommerce/order/form-tracking.php version 1.6.4 is out of date. The core version is 7.0.1<br>naturalshop/woocommerce/order/order-again.php version 2.3.0 is out of date. The core version is 7.8.0<br>naturalshop/woocommerce/order/order-details-customer.php version 2.4.0 is out of date. The core version is 8.7.0<br>naturalshop/woocommerce/order/order-details.php version 2.6.0 is out of date. The core version is 9.6.0<br>naturalshop/woocommerce/order/tracking.php<br>naturalshop/woocommerce/product-searchform.php version 2.5.0 is out of date. The core version is 7.0.1<br>naturalshop/woocommerce/single-product/add-to-cart/external.php version 2.1.0 is out of date. The core version is 7.0.1<br>naturalshop/woocommerce/single-product/add-to-cart/grouped.php version 2.1.7 is out of date. The core version is 7.0.1<br>naturalshop/woocommerce/single-product/add-to-cart/simple.php version 2.1.0 is out of date. The core version is 7.0.1<br>naturalshop/woocommerce/single-product/add-to-cart/variable.php version 2.5.0 is out of date. The core version is 9.6.0<br>naturalshop/woocommerce/single-product/meta.php version 1.6.4 is out of date. The core version is 3.0.0<br>naturalshop/woocommerce/single-product/price.php version 2.4.9 is out of date. The core version is 3.0.0<br>naturalshop/woocommerce/single-product/product-attributes.php version 2.1.3 is out of date. The core version is 9.3.0<br>naturalshop/woocommerce/single-product/product-image.php version 2.6.3 is out of date. The core version is 9.0.0<br>naturalshop/woocommerce/single-product/product-thumbnails.php version 2.6.3 is out of date. The core version is 9.5.0<br>naturalshop/woocommerce/single-product/rating.php version 2.3.2 is out of date. The core version is 3.6.0<br>naturalshop/woocommerce/single-product/related.php version 1.6.4 is out of date. The core version is 9.6.0<br>naturalshop/woocommerce/single-product/review.php<br>naturalshop/woocommerce/single-product/sale-flash.php<br>naturalshop/woocommerce/single-product/share.php version 1.6.4 is out of date. The core version is 3.5.0<br>naturalshop/woocommerce/single-product/short-description.php version 1.6.4 is out of date. The core version is 3.3.0<br>naturalshop/woocommerce/single-product/tabs/additional-information.php version 2.0.0 is out of date. The core version is 3.0.0<br>naturalshop/woocommerce/single-product/tabs/description.php<br>naturalshop/woocommerce/single-product/tabs/tabs.php version 2.4.0 is out of date. The core version is 9.6.0<br>naturalshop/woocommerce/single-product/title.php<br>naturalshop/woocommerce/single-product/up-sells.php version 1.6.4 is out of date. The core version is 9.6.0<br>naturalshop/woocommerce/single-product-reviews.php version 2.3.2 is out of date. The core version is 9.6.0<br>naturalshop/woocommerce/single-product.php<br>naturalshop/woocommerce/content-product_cat.php version 2.6.1 is out of date. The core version is 4.7.0<br>naturalshop/woocommerce/taxonomy-product_cat.php version 1.6.4 is out of date. The core version is 4.7.0<br>naturalshop/woocommerce/taxonomy-product_tag.php version 1.6.4 is out of date. The core version is 4.7.0<br><br>Outdated Templates: ?<br>					<br>					<br>						Learn how to update					 |<br>					<br>						<br>					<br>					<br>						Clear system status theme info cache<br><br>### Admin ###<br><br>Enabled Features: activity-panels<br>analytics<br>product-block-editor<br>coupons<br>core-profiler<br>customize-store<br>customer-effort-score-tracks<br>import-products-task<br>experimental-fashion-sample-products<br>shipping-smart-defaults<br>shipping-setting-tour<br>homescreen<br>marketing<br>mobile-app-banner<br>onboarding<br>onboarding-tasks<br>pattern-toolkit-full-composability<br>product-custom-fields<br>remote-inbox-notifications<br>remote-free-extensions<br>payment-gateway-suggestions<br>printful<br>shipping-label-banner<br>subscriptions<br>store-alerts<br>transient-notices<br>woo-mobile-welcome<br>wc-pay-promotion<br>wc-pay-welcome-page<br>launch-your-store<br><br>Disabled Features: product-data-views<br>experimental-blocks<br>coming-soon-newsletter-template<br>minified-js<br>product-pre-publish-modal<br>settings<br>async-product-editor-category-field<br>product-editor-template-system<br>blueprint<br>reactify-classic-payments-settings<br>use-wp-horizon<br>add-to-cart-with-options-stepper-layout<br>blockified-add-to-cart<br><br>Daily Cron: ? Next scheduled: 2025-02-18 10:42:56 +01:00<br>Options: ?<br>Notes: 216<br>Onboarding: completed<br><br>### Action Scheduler ###<br><br>Canceled: 1<br>Oldest: 2025-02-17 13:28:04 +0000<br>Newest: 2025-02-17 13:28:04 +0000<br><br>Complete: 965<br>Oldest: 2025-01-17 18:56:05 +0000<br>Newest: 2025-02-17 14:27:38 +0000<br><br>Failed: 2<br>Oldest: 2025-02-17 13:32:55 +0000<br>Newest: 2025-02-17 13:32:55 +0000<br><br>Pending: 2<br>Oldest: 2025-02-17 14:29:02 +0000<br>Newest: 2025-02-17 19:09:04 +0000<br><br><br>### Status report information ###<br><br>Generated at: 2025-02-17 15:29:12 +01:00<br>

Kindly share the diagnostic test report. You can find it on right hand side of Post SMTP Dashboard under Troubleshooting.

Hello,

Here it is:

Mailer: postsmtp
HostName: dedondershells.com
cURL Version: 7.88.1
OpenSSL Version: OpenSSL/3.0.15
OS: Linux www453.your-server.de 6.1.0-31-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.128-1 (2025-02-07) x86_64
PHP: Linux 7.4.33 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=No, mcrypt=Yes, zlib_encode=Yes
WordPress: 6.7.2 en_US UTF-8
WordPress Theme: Natural Shop
WordPress Plugins: ManageWP - Worker, Auto Image Resizer Pro, Breadcrumb NavXT, Broken Link Checker, Burst Statistics - Privacy-Friendly Analytics for WordPress, Classic Editor, Anti-Spam by CleanTalk, Contact Form 7, Duplicate Page, Spreadsheet Price Change for WooCommerce and WP E-commerce - Light, Flamingo, Google Analytics Dashboard for WP (GADWP), Site Kit by Google, Anti-Malware Security and Brute-Force Firewall, Login Logo, Mailster for WooCommerce, Mailster - Email Newsletter Plugin for WordPress (Premium), Pagination by BestWebSoft, Post SMTP, Post Types Order, QNS Shortcodes & Post Types, RabbitLoader, Really Simple Security, Security by CleanTalk, User Switching, White Label CMS, WooCommerce Search by Product SKU, Extra Product Sorting Options for WooCommerce, Google Analytics for WooCommerce, WooCommerce New Product Badge, WooCommerce, Wordfence Security, Yoast SEO, YITH WooCommerce Wishlist
WordPress wp_mail Owner: /usr/www/users/dedond/wp-includes/pluggable.php
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args, Mailster->wp_mail_set
WordPress wp_mail_from Filter(s): wordfence::fixWPMailFromAddress
WordPress phpmailer_init Action(s): wpcf7_phpmailer_init, PostsmtpMailer->phpmailer_smtp_init
Postman: 3.1.1
Postman Sender Domain (Envelope|Message): dedondershells.com | dedondershells.com
Postman Prevent Message Sender Override (Email|Name): Yes | Yes
Postman Active Transport: Other SMTP (smtp:tls:login://smtp.antispamcloud.com:587)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 20686 | 2056
Postman Email Log (Enabled|Limit|Transcript Size): Yes | 5000 | 128

Hello @mindofmedia

Thank you so much for providing the requested information. I replicated a similar scenario but was unable to reproduce the issue on my end. I tested all common types of emails sent through WooCommerce, but everything appeared to function correctly.

To better understand and diagnose the problem, could you please specify which particular emails are showing this error? Any additional details, such as error logs or screenshots, would be extremely helpful in pinpointing the cause.

Looking forward to your response!

Best regards,
Support Team – WP Experts

Hello,

Thanks, it is a notification I see in the admin area of WordPress.

Screenshot: https://shot.mindof.media/ty5Z9NfS