> For the complete documentation index, see [llms.txt](https://docs.limecall.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.limecall.com/callback/lead-capture.md).

# Lead capture

Choose what to ask visitors before the call connects.

Open **Widget → Lead capture**.

By default the widget asks for one thing: a phone number. You can ask for more.

## The trade-off

Every extra field costs you submissions. A phone number alone converts best. Each additional required field reduces completion — noticeably so on mobile.

Ask for more only when the information genuinely changes what happens next:

* **Name** — cheap to ask and makes the call warmer. Usually worth it.
* **Email** — worth it if you follow up in writing or need it in your CRM.
* **Company** — worth it in B2B, where it changes who takes the call.
* **Reason for calling** — worth it if you route by topic.

Anything you would not act on differently, do not ask.

## Required versus optional

Mark a field optional unless you truly cannot proceed without it. An optional field still gets filled in by a decent share of visitors, at no cost to the ones who will not.

## Custom fields

Add your own fields for information specific to your business — a policy number, a property address, a preferred appointment window.

Each custom field appears on the resulting lead record, so your team sees it before they speak.

## Field validation

Phone numbers are validated and normalised into international format, so a visitor typing a local format still produces a dialable number.

Email fields are checked for basic validity. Neither check confirms the contact is reachable — only that it is well-formed.

## Consent and privacy

If you operate under GDPR or similar rules, add a consent checkbox and link it to your privacy policy. Make the purpose specific: "I agree to be contacted by phone about my enquiry" is meaningful consent; a bare "I agree to the terms" generally is not.

Data collected here is stored against the lead record. See your account's data settings under **Settings** for retention.

## Where the data goes

Everything captured lands on the lead in **Leads**, and on the conversation in **Inbox**. If you have a CRM connected, it syncs there too — see [Integrations](/integrations.md).

## Pre-filling from your site

If a visitor is already logged into your site, you can pass what you know into the widget so they are not asked twice. See the developer notes in [Developers](/developers.md).