If you’re running a WordPress site, you’ve probably noticed that emails (like contact form notifications, order confirmations, or password resets) don’t always reach the inbox. Sometimes they end up in spam, and sometimes they don’t arrive at all.
That’s because, by default, WordPress uses the PHP mail function to send emails, which is not very reliable. Email providers like Gmail, Outlook, and Yahoo often mark these as suspicious.
The solution? SMTP (Simple Mail Transfer Protocol).
An SMTP server makes sure your WordPress emails are delivered safely to inboxes by using proper authentication and secure email-sending methods. You can connect your site to an SMTP server with the help of a WordPress SMTP plugin (the connector).
Benefits of Using SMTP
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Increases email deliverability.
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Prevents emails from going to spam.
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Adds authentication for more trust.
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Works with services like Gmail, Outlook, Amazon SES, SendGrid, and more.
Step-by-Step: How to Set Up SMTP on WordPress
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Get an SMTP Server
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You can use your hosting provider’s SMTP, or sign up with a service like:
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Gmail/Google Workspace SMTP
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Outlook/Office 365 SMTP
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SendGrid, Mailgun, Amazon SES (great for high-volume/marketing emails)
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Install an SMTP Plugin on WordPress
- Popular options: Fluent SMTP, Sure Mail, or WP Mail SMTP.
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Configure SMTP Settings
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Enter your SMTP server details (host, port, username, password).
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Enable SSL/TLS for security.
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Test Your Email
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Use the plugin’s built-in “Send Test Email” feature.
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Make sure the email reaches your inbox.
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Conclusion
If your WordPress emails aren’t reliable, setting up SMTP is the easiest fix. With the right SMTP server and plugin, your emails will reach the inbox instead of disappearing or landing in spam.
[Quick Note: The SMTP Server cost and All the Setups are already covered by us, if you're our premium maintenance plan customer.]