Keep your data clean, safe, and 100% authentic

Zoho Forms helps you safeguard every submission with built-in spam control features that verify user identity, block bots, and filter out spam or fraudulent entries—ensuring the data you collect is reliable and secure.

Double Opt-In  

Double Opt-In ensures that only genuine, interested users make it to your database. When someone submits a form, a confirmation email is sent automatically. Their submission is only considered valid after they verify their email address. This reduces fake entries, builds a consent-based contact list, and boosts email deliverability—making it essential for security-compliant data collection.

OTP verification  

Add a layer of real-time validation with One-Time Password (OTP) verification. Users receive a unique code via email, SMS, or WhatsApp, which they must enter to access the form. This confirms authenticity and blocks spam bots or invalid submissions. It’s ideal for high-value forms like job applications, event registrations, and gated downloads.

CAPTCHA protection  

CAPTCHA keeps bots at bay while letting real users through with ease. Whether you use a simple checkbox or an invisible option, CAPTCHA ensures only human entries are accepted. It’s a fast, lightweight solution to eliminate automated spam and maintain clean, actionable form data.

At a glance

Features

Purpose

Best for

Verification method

Double Opt-In

Confirms user validity via email

Newsletters, contact lists

Email confirmation link

OTP verification

Validates contact info in real time

Registrations, appointments

Data authenticity

CAPTCHA protection

Prevents automated bot entries

Public forms, large data sets

Spam prevention

Stop spam before it starts

No one wants to waste time filtering spam or chasing invalid leads. With Zoho Forms’ built-in spam control tools, you don’t need third-party plug-ins or manual moderation. Just configure once and let the system do the work—so you can focus on real users and real results.

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Build smarter, safer, spam-free forms in minutes.