OP-Form

What is OP-Form?

OP-Form is a lightweight, privacy-friendly contact form plugin developed by OptimNest, designed for small business websites, freelancers, and custom WordPress setups.
It includes:

  • SMTP email sending
  • Full color styling
  • Spam protection options
  • Built-in Google reCAPTCHA and Cloudflare Turnstile
  • No external plugins required

🛡️ Anti-Spam Protection Options

You can enable any of the following protection layers from the plugin settings:

1. Honeypot & Time Check (Built-in, no keys needed)

Lightweight and invisible protection.

When Enable Anti-Spam Protection is checked in the plugin settings, it will:

  • Add a hidden input field (honeypot) to catch bots
  • Reject submissions made too quickly (under 3 seconds)

Recommended if you want simple protection without third-party services.

2. Google reCAPTCHA (v2 / v3)

Google’s bot detection system with support for:

  • reCAPTCHA v2 (“I’m not a robot” checkbox)
  • Invisible reCAPTCHA v2 (triggered automatically)
  • reCAPTCHA v3 (score-based, no interaction)

To enable:

  1. Go to: https://www.google.com/recaptcha/admin
  2. Register your domain
  3. Choose type (v2 / Invisible v2 / v3)
  4. Copy your Site Key and Secret Key
  5. In your WordPress Admin:
    • Enable reCAPTCHA
    • Paste the keys
    • Select your type from the dropdown
    • Save settings

3. Cloudflare Turnstile (Free, privacy-first alternative)

Modern CAPTCHA alternative – no images, no challenges.

To enable:

  1. Go to: https://dash.cloudflare.com
  2. In the Turnstile section, click Add widget
  3. Fill in:
    • Widget name: e.g. OptimNest OP-Form
    • Domain: yourdomain.com
    • Mode: Managed
    • Pre-clearance: Off
  4. Click Create
  5. Copy your Site Key and Secret Key
  6. In your WordPress Admin:
    • Enable Turnstile Protection
    • Paste the keys
    • Save settings

You can enable more than one protection layer (e.g., Honeypot + Turnstile) for stronger defense.
If both Turnstile and reCAPTCHA are enabled, both will be validated before sending the form.

📬 SMTP Settings Explained

Email To
Recipient address. Where the contact form messages go.
Example: info@example.com

From Email
Sender address. Should be from your domain.
Example: info@yourdomain.com

Success Message
Message shown after successful send.
Example: Your message was sent successfully.

SMTP Host
Your mail server (⚠️ don’t use http/https).
Example:

  • yourdomain.com
    or
  • mail.yourdomain.com → Not recommended

SMTP Port
Used for email sending:

  • 465 → SSL
  • 587 → TLS
  • 25 → None (not secure)

SMTP Username
Usually your full email address.
Example: info@yourdomain.com

SMTP Password
Password for the email above. Required for login.

Encryption
Select the method used by your host:

  • SSL → Port 465
  • TLS → Port 587
  • None → Not recommended