WordPress uses the PHP mail() function to send emails. Most hosting providers:

• Disable PHP mail()
• Throttle email sending
• Lack proper SMTP configuration
• Do not have verified DNS email records
• Flag emails as spam

Common symptoms:

• Contact form emails not received
• WooCommerce order emails missing
• Password reset email not received
• Admin notifications not sent
• Emails going to spam / promotions

The best fix is enabling a proper SMTP service (explained below).

Install a testing plugin:

• Check & Log Email
• WP Mail Logging

Go to:

• Tools → Check & Log Email
• Send a test email

If the log says “Sent” but you didn’t receive it → delivery failure (SMTP needed).
If the log shows error → plugin, DNS, or server issue.

Recommended SMTP plugins:

• WP Mail SMTP (best & easiest)
• FluentSMTP (free + powerful)
• Post SMTP (advanced)

These plugins replace PHP mail() with a real email sending service.

Best free SMTP options:

• Gmail SMTP — good for small websites
• Brevo (Sendinblue) — 300 free emails/day
• Mailgun (EU region)
• Pepipost / Netcore

Best premium SMTP options:

• Amazon SES — super cheap + reliable
• SendGrid
• Postmark — excellent for WooCommerce

WooCommerce stores should always use Amazon SES or Postmark.

Add these DNS records:

• SPF — verifies allowed senders
• DKIM — digitally signs your emails
• DMARC — protects domain reputation

Example SPF record:

v=spf1 include:_spf.google.com ~all
    

Example DMARC record:

v=DMARC1; p=none; rua=mailto:you@yourdomain.com
    

Your SMTP provider will give exact records to add.

Check whether your host:

• Blocks SMTP ports (587 or 465)
• Limits email sending (per hour/day)
• Disallows Gmail SMTP
• Has disabled PHP mail() entirely

If so, you MUST use SMTP—no other option will work.

Fix for Contact Form 7:

• From Address should be your domain email
• Use noreply@yourdomain.com
• Do not use Gmail/Yahoo here

Fix for Elementor Forms:

• Set “From Email” to a domain-based email
• Enable SMTP plugin
• Disable form caching

Fix for WPForms:

• Set authenticated SMTP
• Enable “Force From Email”

Check WooCommerce email settings:

• WooCommerce → Settings → Emails
• Ensure emails are enabled
• Check “From” email address

Common WooCommerce email issues:

• Order email disabled
• Wrong admin email
• Email template broken
• SMTP not configured

WooCommerce should always use SMTP for reliable delivery.

• Use domain-based email (not Gmail)
• Add SPF, DKIM, DMARC
• Use a professional SMTP service
• Avoid too many links or images in emails
• Avoid words like “FREE” in subject

Use:

• FluentSMTP (built-in logger)
• WP Mail Logging

You can see:

• Which email was sent
• To whom
• Delivery status
• Error messages