Flowzy SMTP Snippet – Lightweight WordPress SMTP via Code Snippets

Flowzy SMTP Snippet – Lightweight WordPress SMTP via Code Snippets

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Flowzy SMTP Snippet is a ultra-lightweight SMTP engine for WordPress that replaces wp_mail() with reliable SMTP delivery. Configure it via a clean Settings page or lock it down with constants—no bloated plugin needed.

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Last Update: 23-11-2025

Docs: Includes video guides.

Support: Free 6-month support

Flowzy SMTP Snippet – SMTP for WordPress Without a Heavy Plugin

Flowzy SMTP Snippet lets you route all your WordPress emails through a real SMTP server, without installing yet another bulky SMTP plugin.

You simply paste one code snippet into either the Code Snippets plugin or your theme’s functions.php file, and WordPress instantly gets a dedicated Flowzy SMTP menu in the admin sidebar.

From there, you’ll see two simple options:

  • SMTP Settings – enter your SMTP host, port, encryption, username, password, from email and name.

  • Send Test Email – type any email address and send a quick test to confirm everything is working.

No need to edit the snippet again.
No need to touch wp-config.php.
Your users just configure everything from the WordPress dashboard like a normal plugin.

All emails sent via wp_mail() (contact forms, WooCommerce, password resets, registrations, etc.) are then delivered through your SMTP provider, giving you better reliability and deliverability with a tiny, lightweight solution.

  • Lightweight by design – Single-purpose SMTP engine, no tracking, no dashboards, no unnecessary overhead.
  • Simple settings UI – A small, focused settings page under Settings → Flowzy SMTP for host, port, encryption, auth, from email & name.
  • Config via code or UI – Use the settings page, or override everything via FLOWZY_SMTP_* constants in wp-config.php.
  • Constants win over UI – If a constant is defined, the UI can’t override it. Perfect for agencies with staging/production setups.
  • Supports SSL, TLS, and non-encrypted SMTP – Choose between none, ssl, or tls based on your provider.
  • Custom “From” email and name – Override WordPress defaults globally so all emails come from a consistent identity.
  • Error logging (optional) – Enable debug mode to log failed emails to PHP’s error_log, making troubleshooting painless.
  • Developer-friendly filters – flowzy_smtp_config and flowzy_smtp_enabled let developers extend or conditionally disable SMTP.
  • Must-use compatible – Works perfectly as an mu-plugin for enforced SMTP across all sites in a network.

No video documentation available.

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Do I need to install a separate plugin?

You paste the snippet into the Code Snippets plugin or into your theme’s functions.php. That’s it.

Will it work with my contact form or WooCommerce emails?

Yes. Any plugin that uses wp_mail() (Contact Form 7, WPForms, WooCommerce, membership plugins, etc.) will automatically send through Flowzy SMTP once the snippet is active and configured.