If you want a one-time passcode on your HubSpot forms and you already have a Twilio account, Twilio Verify is the obvious first stop. It's a solid API. It's also only one piece of what a protected HubSpot form needs, and its pricing works differently from sending a plain SMS.
What Twilio Verify is
Verify is Twilio's API for sending and checking one-time codes. You call it to start a verification for a phone number, Twilio generates the code and delivers it by SMS, WhatsApp, voice or email, and you call it again to check what the user typed.
According to Twilio's Verify pricing, checked October 2026 (Twilio lists the rates as current as of August 2026), you pay:
- $0.05 per successful verification, charged when the user enters the right code
- Plus the channel fee, for example $0.0083 per SMS in the US, charged on every send attempt whether or not the user finishes
Failed or abandoned verifications don't pay the $0.05, but their messages are still billed.
What a HubSpot form still needs
Verify sends and checks codes. Putting it in front of a HubSpot form means building the rest yourself:
- Stopping the submit. Script on every page with a form that holds the submission, opens a code prompt, and only lets the form through once the code checks out.
- A server endpoint. Your Twilio credentials can't live in the browser, so something you host has to call Verify.
- Abuse limits. A public form that sends SMS on demand is a target for SMS pumping fraud. Verify includes Twilio's own fraud protection, but per-form and per-visitor limits are still yours to design.
- Marking the contact. If sales should know a number was verified, you need to write that to the HubSpot contact.
- Every site your forms live on. HubSpot pages, WordPress, Webflow and the rest each need the script installed and tested.
For a team with developers, that's a few days of work plus upkeep. For a marketing team without them, it's a project that doesn't happen.
What FormVerify does differently
FormVerify is the finished version of that list, built for HubSpot forms. You connect your own Twilio account, and FormVerify sends codes through Twilio's standard messaging API rather than Verify. FormVerify generates and checks the codes itself.
That changes the bill. There is no $0.05 verification fee. Twilio charges you its normal SMS rate for each message, and hubglo adds no markup. You pay FormVerify a flat monthly plan instead (pricing).
The rest of the list comes with it:
- One switch on HubSpot pages, or one snippet on other sites, and you choose which forms ask for a code
- A popup on your page for the code, matched to your brand color
- Limits per number, per visitor and per day, with every throttled attempt logged
- Verified contacts marked in HubSpot, so reps can call them first
- WhatsApp from your own business number as well as Twilio SMS, with SMS as the fallback for numbers not on WhatsApp
Cost side by side
At 1,000 successful verifications a month in the US, the Verify fee alone is $50, before any SMS charges. At 5,000 it's $250. FormVerify's plan price stays the same as volume grows, up to the plan's daily verification cap.
| Twilio Verify | FormVerify on your Twilio account | |
|---|---|---|
| Per successful verification | $0.05 | None |
| SMS delivery | Twilio's rate, per attempt | Twilio's rate, per message |
| Monthly fee | None | Flat plan |
| HubSpot form integration | You build it | Included |
| WhatsApp from your own number | Through Twilio | Through your Meta account |
| Abuse limits per form and visitor | You build them | Included |
| Verified flag on the HubSpot contact | You build it | Included |
Which one to pick
Choose Twilio Verify if you have developers, your forms aren't HubSpot forms, or you're verifying logins and sign-ups inside your own app, where Verify's email, voice and authenticator-app channels matter.
Choose FormVerify if your leads come through HubSpot forms, nobody on the team wants to maintain form scripts, or your volume makes the per-verification fee add up.
Either way, the reason to verify is the same. HubSpot's built-in phone validation checks the format of a number, not whether the person on the form owns it (validation vs verification). To see the FormVerify flow on a real form, the live demo takes about a minute.