A vital part of running an online store is automated communication. When a customer buys a product, they expect an instant confirmation email. When a shop manager receives an order, they need a notification to begin fulfillment. However, a widespread WooCommerce bug frequently causes total email radio silence. Orders are processed successfully in the backend, but neither the client nor the admin receives a single email message.

This issue stems from the way WordPress handles emails by default. Out of the box, WordPress uses the built-in PHP mail() function to send notifications. Because this method lacks proper authentication headers (like SPF, DKIM, or DMARC), modern email providers such as Gmail, Outlook, and Yahoo view these automated messages with extreme suspicion. They will either instantly route them to the spam/junk folder or block them entirely at the server level before they even reach the recipient's account. This creates the illusion of a WooCommerce system bug, whereas it is actually an email delivery failure.

The Solution

The only reliable way to fix this bug is to bypass the default PHP mail function completely and route your e-commerce store's emails through a dedicated SMTP (Simple Mail Transfer Protocol) provider.

  1. Install an SMTP Plugin: Install a reputable plugin such as WP Mail SMTP or FluentSMTP from the official WordPress repository.

  2. Choose a Reliable Mail Delivery Service: Create a free or paid account with an established email delivery provider. Excellent options include SendLayer, Brevo (formerly Sendinblue), Mailgun, or SMTP.com.

  3. Configure DNS Records: Your provider will supply you with specific TXT records (SPF and DKIM). Log into your domain registrar (e.g., GoDaddy, Namecheap) and add these records to your DNS zone file. This proves to email servers that your website has permission to send emails from your domain name.

  4. Test the Configuration: Use the built-in email testing tool inside your chosen SMTP plugin to send a test message to your personal inbox. Once successful, go to WooCommerce > Settings > Emails and verify that the "From" address matches your newly authenticated domain perfectly.