How to Use SMS OTP Verification in Forms & Surveys

SMS OTP verification helps you collect real phone numbers and stop fake submissions. Before a form is sent, users must confirm their number with a one-time code. This keeps your data clean and your forms safe.

What Is SMS OTP Verification

SMS OTP verification sends a short code to a user’s phone number. The user enters this code to prove the number is real. Only after this step can they submit the form. This improves trust, reduces spam, and protects form submissions.

How to Set Up SMS OTP Verification in Formester

Step 1: Add the Phone Field

• Open your Formester builder.

• Click Add Elements and select the Phone field.

• Place it anywhere in your form.

Step 2: Customize Phone Settings

• Click the phone field to open settings.

• Edit the label and choose a default country code.

Step 3: Enable SMS OTP Verification

• Go to the Advanced tab.

• Turn on SMS Verification to enable OTP for that field.

Step 4: Customize the OTP Message

• Write the SMS message users will receive.

• Set how long the OTP stays valid.

Step 5: Test and Publish

• Save your form and submit a test entry.

• Make sure the OTP arrives and verification works smoothly.

Example Use Cases

SMS OTP verification is ideal for lead generation to ensure sales teams get real phone numbers. It works well for user signups to block fake accounts and bots. It is also useful for orders, bookings, and inquiries where confirming the phone number prevents misuse and follow-up issues.

Why Use SMS OTP Verification

SMS OTP verification reduces spam and fake entries instantly. It improves data accuracy and builds trust with users. Setup is simple and works smoothly on mobile devices without extra tools or coding.

Final Thoughts

SMS OTP verification makes your forms more secure by confirming real users before submission. With easy setup and full control inside Formester, you can protect your forms, improve data quality, and create a better user experience for everyone.

Updated on: 31/12/2025