splitforms.com
LEAD CAPTURE · CONTACT FORM TEMPLATE

Contact Form with Phone Number Field

Most contact forms ship without a phone field, then the team complains they can't follow up by call. This is the form with phone done right — country dial-code picker and auto-format.

1,000/mo free·no card·works on any host
form.htmlhtml22 lines
01<form action="https://splitforms.com/api/submit" method="POST">
02 <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY">
03 <input type="hidden" name="subject" value="New contact form submission">
04
05 <label for="name">Full name *</label>
06 <input id="name" type="text" name="name" placeholder="Jane Builder" required>
07 <label for="email">Email *</label>
08 <input id="email" type="email" name="email" placeholder="jane@example.com" required>
09 <label for="phone">Phone *</label>
10 <input id="phone" type="tel" name="phone" placeholder="+1 415 555 0142" required>
11 <label for="message">Message *</label>
12 <textarea id="message" name="message" placeholder="How can we help?" required></textarea>
13
14 <!-- honeypot — bots fill every field -->
15 <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off">
16
17 <button type="submit">Send</button>
18</form>
19
20<p style="margin-top:12px;font-size:11px;color:#888;text-align:right">
21 Powered by <a href="https://splitforms.com" style="color:#888;text-decoration:none" target="_blank" rel="noopener">splitforms</a>
22</p>
1,000
submissions / mo, free
4
fields, ready to ship
5
code outputs
60s
from copy to inbox
§ 01Why it mattersthe qualifying-fields argument

Sales teams convert better when they have a phone number to dial. But poorly-built phone inputs accept any string — '+1234' or 'idk' or '(call me maybe)'. A correct phone field has a country dropdown, a numeric input mode, and a format mask that shapes the user's input as they type. The result is clean data your CRM can actually dial.

✦ at a glance
  • Basic contact form · 4 fields
  • HTML, JS, React, PHP, cURL outputs
  • One POST endpoint, no SDK
  • Honeypot + classifier, no CAPTCHA
§ 02Live previewinteractive · sandboxed · no key required

See exactly what your visitors see — and you’ll receive.

Left: the rendered form, fully interactive in a sandboxed iframe. Right: the email and dashboard view that lands the moment a visitor submits.

preview · contact-form-with-phonelocalhost:3000
✦ what you’ll see in your inbox

Every submission becomes an email plus a dashboard row. The fields below are the exact payload your form will send. Reply-to is wired to the visitor’s email so hitting reply goes back to them.

dashboard · new submission14ms · 200 OK
SUBJECT · New contact form submission
Full name
Maya Iyer
Email
maya@studio71.co
Phone
+1 415 555 0142
Message
Loved your last open house in Hayes — looking for similar with parking. Pre-approved through Wells Fargo.

Iframe is sandboxed — submit doesn’t actually fire. Get your access key to wire it up live.

§ 03Three steps3 steps · ~60 seconds

Generate, embed, receive.

Three actions stand between you and your first lead. None of them require a backend, a database, or a CAPTCHA library.

STEP 01GENERATE

Use the masked phone template

Country dial-code dropdown on the left, formatted input on the right. The script formats US numbers as (XXX) XXX-XXXX and falls back to space-separated triples for international.

Create your form
key=sk_live_••••••••
STEP 02EMBED

Submit both fields together

The country code and the phone are submitted as separate fields ('country' and 'phone'). Your inbox gets both — concatenate them in the auto-responder template if needed.

snippethtml
<form action="https://splitforms.com/api/submit" method="POST">
  …
</form>
STEP 03RECEIVE

Validate format server-side

splitforms applies basic E.164 validation on submission. If you need stricter (libphonenumber) checks, use a webhook to validate before forwarding to your CRM.

inbox · 1 newjust now
FROM contact@yoursite.com
New contact form submission
Maya Iyer maya@studio71.co
Loved your last open house in Hayes — looking for similar with parking. Pre-approved through Wells Fargo.
§ 04Copy & ship5 languages · same endpoint

Five outputs. One backend.

HTML by default. Click open the language you ship in — every variant POSTs to the same /api/submit endpoint.

01HTMLform.html22 lines
<form action="https://splitforms.com/api/submit" method="POST">
  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY">
  <input type="hidden" name="subject" value="New contact form submission">

  <label for="name">Full name *</label>
  <input id="name" type="text" name="name" placeholder="Jane Builder" required>
  <label for="email">Email *</label>
  <input id="email" type="email" name="email" placeholder="jane@example.com" required>
  <label for="phone">Phone *</label>
  <input id="phone" type="tel" name="phone" placeholder="+1 415 555 0142" required>
  <label for="message">Message *</label>
  <textarea id="message" name="message" placeholder="How can we help?" required></textarea>

  <!-- honeypot — bots fill every field -->
  <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off">

  <button type="submit">Send</button>
</form>

<p style="margin-top:12px;font-size:11px;color:#888;text-align:right">
  Powered by <a href="https://splitforms.com" style="color:#888;text-decoration:none" target="_blank" rel="noopener">splitforms</a>
</p>
02JavaScriptform.js38 lines
<form id="lf-form">
  <label for="name">Full name *</label>
  <input id="name" type="text" name="name" placeholder="Jane Builder" required>
  <label for="email">Email *</label>
  <input id="email" type="email" name="email" placeholder="jane@example.com" required>
  <label for="phone">Phone *</label>
  <input id="phone" type="tel" name="phone" placeholder="+1 415 555 0142" required>
  <label for="message">Message *</label>
  <textarea id="message" name="message" placeholder="How can we help?" required></textarea>
  <button type="submit">Send</button>
</form>

<p style="margin-top:12px;font-size:11px;color:#888;text-align:right">
  Powered by <a href="https://splitforms.com" style="color:#888;text-decoration:none" target="_blank" rel="noopener">splitforms</a>
</p>

<script>
  document.getElementById('lf-form').addEventListener('submit', async (e) => {
    e.preventDefault();
    const data = new FormData(e.target);
    data.set('access_key', 'YOUR_ACCESS_KEY');
    data.set('subject', 'New contact form submission');

    const res = await fetch('https://splitforms.com/api/submit', {
      method: 'POST',
      body: data,
      headers: { Accept: 'application/json' },
    });

    const json = await res.json();
    if (json.success) {
      e.target.reset();
      alert('Sent!');
    } else {
      alert('Error: ' + (json.message || 'Try again'));
    }
  });
</script>
03React / Next.jsForm.tsx53 lines
'use client';

import { useState, type FormEvent } from 'react';

export default function BasicForm() {
  const [status, setStatus] = useState<'idle' | 'sending' | 'sent' | 'error'>('idle');

  async function onSubmit(e: FormEvent<HTMLFormElement>) {
    e.preventDefault();
    setStatus('sending');

    const data = new FormData(e.currentTarget);
    data.set('access_key', 'YOUR_ACCESS_KEY');
    data.set('subject', 'New contact form submission');

    const res = await fetch('https://splitforms.com/api/submit', {
      method: 'POST',
      body: data,
      headers: { Accept: 'application/json' },
    });

    const json = await res.json();
    setStatus(json.success ? 'sent' : 'error');
    if (json.success) e.currentTarget.reset();
  }

  if (status === 'sent') return <p>Thanks — we&rsquo;ll be in touch.</p>;

  return (
    <>
    <form onSubmit={onSubmit}>
      <label htmlFor="name">Full name *</label>
      <input id="name" type="text" name="name" placeholder="Jane Builder" required />
      <label htmlFor="email">Email *</label>
      <input id="email" type="email" name="email" placeholder="jane@example.com" required />
      <label htmlFor="phone">Phone *</label>
      <input id="phone" type="tel" name="phone" placeholder="+1 415 555 0142" required />
      <label htmlFor="message">Message *</label>
      <textarea id="message" name="message" placeholder="How can we help?" required />

      <button type="submit" disabled={status === 'sending'}>
        {status === 'sending' ? 'Sending…' : 'Send'}
      </button>

      {status === 'error' && <p>Something went wrong. Try again.</p>}
    </form>

      <p style={{ marginTop: 12, fontSize: 11, color: '#888', textAlign: 'right' }}>
        Powered by <a href="https://splitforms.com" target="_blank" rel="noopener" style={{ color: '#888', textDecoration: 'none' }}>splitforms</a>
      </p>
    </>
  );
}
04PHPsubmit.php28 lines
<?php
// Drop into a PHP page. Receives a form POST and proxies it to splitforms.com.
// Useful when you want to add server-side validation or rate limiting.

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $allowed = ['name', 'email', 'phone', 'message'];
    $payload = ['access_key' => 'YOUR_ACCESS_KEY'];
    $payload['subject'] = 'New contact form submission';

    foreach ($allowed as $f) {
        if (isset($_POST[$f])) $payload[$f] = $_POST[$f];
    }

    $ch = curl_init('https://splitforms.com/api/submit');
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($payload));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, ['Accept: application/json']);
    $response = curl_exec($ch);
    $status   = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    curl_close($ch);

    header('Content-Type: application/json');
    http_response_code($status);
    echo $response;
    exit;
}
?>
05cURLtest.sh8 lines
curl -X POST https://splitforms.com/api/submit \
  -H "Accept: application/json" \
  -d "access_key=YOUR_ACCESS_KEY" \
  -d "subject=New contact form submission" \
  -d "name=Jane Builder" \
  -d "email=jane@example.com" \
  -d "phone=+15555555555" \
  -d "message=Hello from cURL" 

Replace YOUR_ACCESS_KEY with the key from your dashboard. That’s the only edit.

§ 06FAQ4 answered

Things people ask before they ship.

Direct answers, no marketing fluff. Missing one? Email hello@splitforms.com.

01Can I make the phone field required?
Yes — add the required attribute on the input. The form won't submit until the user types something. Combined with the type='tel' attribute, mobile keyboards open the numeric keypad automatically.
02Why the country dropdown?
Different countries have different number lengths and formats. A US number is 10 digits; UK mobiles are 11; Indian mobiles are 10 starting with 6/7/8/9. Asking the user upfront simplifies the input mask and reduces 'why doesn't my number work' tickets.
03Can I default the country based on visitor location?
Yes — read the country from a Cloudflare / Vercel header server-side, or use a small geolocation API client-side. Pre-select the dropdown on first load. We have a recipe in the docs.
04Does this support WhatsApp / SMS notifications?
Yes — pair with a webhook to Twilio or WhatsApp Cloud API. splitforms forwards the phone number on every submission; your downstream service handles the messaging.
✻ ✻ ✻

Ship your contact form with phone number field in 60 seconds.

1,000 free submissions per month. No credit card. Copy the snippet, paste your access key, watch leads land in your inbox.

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v0.1 · founders pricing locked in · early access open