By default, WordPress uses the PHP mail() function, which often results in emails being flagged as spam or blocked entirely by servers. To ensure that Gutena Forms submission alerts always reach their destination, you need to set up an SMTP connection for your WordPress site.

Here’s how to do it:

Set Up Post SMTP for Reliable Email Delivery

Post SMTP is the most reliable SMTP plugin for improving WordPress email delivery. It replaces the default WordPress mail delivery system with a more secure, authenticated SMTP connection.

Step-by-Step SMTP Configuration:

1. In your WordPress dashboard, go to ‘Plugins → Add Plugin.’
2. Search for Post SMTP.
3. Click ‘Install Now,’ then ‘Activate’ the plugin.

4. Once activated, go to ‘Post SMTP → Dashboard’ and click ‘Start the Wizard.’

The setup wizard will walk you through connecting your site to a reliable email provider. Post SMTP supports all major services, including:

• Gmail (Google Workspace)
• Outlook (Microsoft 365)
• Amazon SES
• Zoho Mail
• Brevo (formerly Sendinblue)
• …and many others.

For this guide, we have picked ‘Gmail,’

On the subsequent screen, provide the following details:

• Enter your ‘From Email’ (use the same domain-based email you want your backup alerts to come from, like example@yourdomain.com).
• Enter your ‘From Name’ (the name that shows in your inbox).

• You can also use One – Click Setup to connect instantly.
• Add your SMTP credentials like Client ID & Client Secret.
• Then click to Connect to Gmail API
• Click ‘Save and Continue.’

The final step lets you send a test email. Enter your email address and click ‘Send Test Email.’

If it lands in your inbox, you’re good to go. From now on, all WordPress emails, including UpdraftPlus notifications, will use your SMTP provider for reliable delivery.

3. Optimizing Gutena Forms Settings

To ensure high deliverability, your form settings must align with your SMTP configuration.

• Plugin Installation: Ensure you are using the latest version of Gutena Forms. Refer to the Official Installation Guide for block-based setup.
• “From” Email Alignment: In your Gutena Form block settings, set the “From Email” to be the same email address you configured in Post SMTP.
• Reply-To Header: Set the “Reply-To” to the user’s email field so you can hit “Reply” in your inbox easily.

4. Troubleshooting & Delivery Monitoring

If emails are still not arriving, follow this checklist:

Solution	Action
Email Log	Check the Post SMTP Email Log to see if the message was sent or failed.
Spam Check	Verify the recipient’s Junk folder and mark it as “Not Spam.”
Hosting Limits	Contact your web host to ensure they aren’t blocking external SMTP connections.
Send test email	Verify your setup instantly by sending a test email to confirm WordPress emails are working.

5. Summary of Benefits

• Zero Missed Leads: Every Gutena Form submission is tracked.
• Security: OAuth 2 keeps your SMTP credentials safe.
• Deliverability: Uses professional APIs instead of unreliable server mail.