How to Block Emails and Prevent Spam on Your Website Forms

If you want to block specific email addresses from submitting forms on your website, Showoff makes this possible. Here’s how:

1. Go to Settings → Site Settings → Security Settings

2. Scroll down to Blocked Email Addresses

3. Add the email addresses you want to block

This will prevent those addresses from completing forms on your site.

✅ Recommended Alternatives to Prevent Spam

Even with email blocking, it’s a good idea to implement additional measures to reduce spam submissions.

🧩 1. Enable CAPTCHA

CAPTCHA ensures that only real users can submit your forms, preventing automated spam.

Steps to Add a CAPTCHA:

1. Open the form in the back office

2. Add a new question to the form

3. Select the question type as CAPTCHA

4. Enter a field name and question name, then click Save

Once added, the CAPTCHA displays an alphanumeric code that users must enter to verify they are human. This ensures your form collects genuine responses.

📖 For more details, see: [How to Add a CAPTCHA in the CMS]

✉️ 2. Enable Double Opt-In Verification

Double opt-in verification adds an extra layer of protection against spam:

• Users must confirm their email address before their submission is accepted

• Only genuine entries are collected

Important: A CAPTCHA question must be created on the form before enabling double opt-in verification.

📌 Summary

• Direct email blocking is available via the Blocked Email Addresses setting

• Enabling CAPTCHA is the primary method to prevent spam submissions

• Using double opt-in verification provides an additional safeguard for valid submissions