WooCommerce does not operate its own mail server; it simply calls WordPress’s email functions.
If those functions are tied to PHP mail or a misconfigured SMTP plugin, WooCommerce notifications inherit the same problems.
Customers never receive order confirmations or status updates after purchasing.
Store admins stop receiving “new order” notifications, especially on busy days.
Some email types work while others are blocked or flagged as suspicious.
Inconsistent delivery to specific providers like Gmail or Outlook.
By routing all WooCommerce and WordPress email through our authenticated SMTP providers, we bypass host-level PHP limitations and poor reputation pools.
GuardianSend configures your site to use these routes and updates DNS so that inboxes see those transactional emails as valid traffic from your domain.
After configuration, we test order placement, account registration, refunds, and password resets to confirm consistent delivery.
If you would rather not debug headers, DNS, and SMTP yourself, GuardianSend can take over website email routing and authentication for you. Visit our Services page or contact us.