When WooCommerce order confirmations, password resets, or shipping notices fail to arrive, the cause is usually not WooCommerce - it is how the server sends mail. Messages sent by the default PHP mail function often fail authentication and get filtered as spam. Here is how to make store email reliable.
By default WordPress hands email to the server's basic mail function, which frequently sends without proper authentication. Receiving providers then treat those messages as suspicious and drop them into spam or reject them outright.
Install an SMTP plugin and route WooCommerce email through a proper mailbox or a transactional email service using real SMTP credentials. Authenticated SMTP is the single biggest improvement in store email deliverability, because the message is now sent by an identity that receivers can verify.
Add the three DNS authentication records for whatever domain your store sends from so receiving servers can confirm the mail is genuinely yours. These records are what move order emails from the spam folder to the inbox (covered step by step in the email deliverability guide).
Set the WooCommerce "from" address to a genuine mailbox on your sending domain, for example orders@yourstore.com. Avoid free-provider from-addresses and avoid mismatches between the from-domain and the authenticated sending domain, which trigger DMARC failures.
Place a real test order and confirm the confirmation reaches an external inbox, not spam. Send to a couple of major providers, since each filters differently. Check the message headers for spf=pass and dkim=pass.
Our managed WooCommerce hosting includes email configured for deliverability, and our team sets up SPF, DKIM, and DMARC for your sending domain during onboarding so order emails land in the inbox from the start.
