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CONTACT FORM (WITH PHONE) · ELEVENTY

Contact Form (with phone) for Eleventy

Name, email, phone, company, reason — for B2B inquiries that need qualification. Free for 500 submissions per month — no backend, no SDK, no plugin.

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500/mo free·no card·drop-in for Eleventy
form.htmlhtml30 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 detailed contact 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">Work email *</label>
08  <input id="email" type="email" name="email" placeholder="jane@company.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="company">Company</label>
12  <input id="company" type="text" name="company" placeholder="Acme Inc">
13  <label for="reason">What's this about? *</label>
14  <select id="reason" name="reason" required>
15    <option value="">Choose…</option>
16    <option>Sales / pricing</option>
17    <option>Partnerships</option>
18    <option>Press / media</option>
19    <option>Support</option>
20    <option>Careers</option>
21    <option>Other</option>
22  </select>
23  <label for="message">Message *</label>
24  <textarea id="message" name="message" placeholder="Give us context — links, dates, deal size, anything we should know." required></textarea>
25 
26  <!-- honeypot — bots fill every field -->
27  <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off">
28 
29  <button type="submit">Send</button>
30</form>
500
submissions / mo, free
6
fields, ready to ship
5
code outputs
60s
from copy to inbox
§ 00Eleventy + Contact Form (with phone)platform-specific integration guide

Why Eleventy developers choose splitforms for contact form (with phone)

Eleventy (11ty) is a flexible static site generator that lets you use any templating language, but it doesn't process form submissions — the output is static HTML. Adding a Node server or a Netlify function just for a contact form defeats the simplicity that makes Eleventy appealing. The contact form (with phone) on this page posts from the browser to splitforms, so your Eleventy site stays static. It works with Nunjucks, Handlebars, Liquid, Markdown, and every Eleventy template language because the form is plain HTML.

§ 00Quick answerHTML · lead capture

Yes — this is the shortest safe path for Eleventy.

Use the HTML snippet on this page, keep the contact form (with phone) fields visible in your Eleventy UI, and let splitforms handle delivery, spam filtering, storage, and webhooks.

best implementation

Paste the HTML version, then replace YOUR_ACCESS_KEY.

The posted payload contains full name, work email, phone, company, what's this about?, message. Required fields are full name, work email, phone, what's this about? and message.

native eleventy reality

Eleventy is a Node-based static site generator — it produces HTML at build time and ships nothing else.

use case fit

A contact form with a phone number field that auto-formats as the user types — (555) 123-4567 emerges from raw digits. Pure pattern validation, optional JS mask for the live formatting.

§ 01Contact Form (with phone) × Eleventywhy this combination, in 80 words

Built for Eleventy developers who hate operating a backend.

Splitforms is the form backend for Eleventy sites. One POST endpoint, no SDK, no plugin — drop the contact form (with phone) into a page and ship.

Splitforms is the form backend for Eleventy sites. One POST endpoint, spam filtering, and a real dashboard — drop-in, no server, no PHP. Free for 500 dashboard submissions per month; Starter adds email, signed webhooks, exports, and retained uploads; Pro is $5/mo for 5,000.

✦ what you get on the free plan
  • ✓500 form submissions per month
  • ✓2 forms on Free; unlimited forms on Pro
  • ✓Spam protection (honeypot + classifier)
  • ✓Webhooks: Slack, Discord, WhatsApp, custom
  • ✓CSV export of all submissions
  • ✓Email notifications (CC and BCC on Pro)
§ 02Copy-paste codeHTML · 30 lines

Drop into any Eleventy project.

Replace YOUR_ACCESS_KEY with your splitforms key, paste into a Eleventy page, and ship. No build-time integration required.

form.htmlhtml30 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 detailed contact 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">Work email *</label>
08  <input id="email" type="email" name="email" placeholder="jane@company.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="company">Company</label>
12  <input id="company" type="text" name="company" placeholder="Acme Inc">
13  <label for="reason">What's this about? *</label>
14  <select id="reason" name="reason" required>
15    <option value="">Choose…</option>
16    <option>Sales / pricing</option>
17    <option>Partnerships</option>
18    <option>Press / media</option>
19    <option>Support</option>
20    <option>Careers</option>
21    <option>Other</option>
22  </select>
23  <label for="message">Message *</label>
24  <textarea id="message" name="message" placeholder="Give us context — links, dates, deal size, anything we should know." required></textarea>
25 
26  <!-- honeypot — bots fill every field -->
27  <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off">
28 
29  <button type="submit">Send</button>
30</form>
§ 03Setup3 steps · 60 seconds · zero config

Generate, embed, receive.

Three actions stand between you and your first contact form (with phone) submission. None of them require a backend, a database, or a CAPTCHA library.

STEP 01GENERATE

Generate a free splitforms key

Sign in at splitforms.com — your access key is created instantly. No credit card, no setup wizard, no SDK to install.

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

Paste the contact form (with phone) into your Eleventy project

Drop the form snippet into a Eleventy page, component, or layout. Replace YOUR_ACCESS_KEY with the key from your dashboard. The form action is a hard-coded URL — no env vars or build-time wiring needed.

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

Receive submissions

Dashboard updates live on Free. Starter adds email delivery, signed webhooks, CSV export, Slack/Discord forwarding, and BCC to your team.

inbox · 1 newjust now
FROM contact@yoursite.com
New detailed contact submission
Maya Iyer maya@studio71.co
Loved the demo — quick question about pricing on the 3-year plan. Are usage limits per project or account-wide?
§ 03bPhone Number Input Form (with masked input)template-specific playbook

The reason this contact form (with phone) exists.

Mobile-friendly numeric keypad, live mask, format-tolerant.

why it matters

Phone fields suffer from format chaos — users type +1 555 123 4567, (555) 123 4567, 555.123.4567, 5551234567. Three options: accept anything and normalize server-side (best for international), use a pattern attribute for client-side validation (good for US-only), or apply a JavaScript mask that formats as the user types (highest conversion, more code). splitforms accepts any format and your form's UX is whichever approach fits your audience.

route the submission
01

Use type="tel" not type="text"

Mobile keyboards open the numeric keypad for tel inputs. Desktop accepts the same characters as text but signals intent.

02

Add a pattern attribute for validation

`pattern="[0-9() +-]+"` allows the common phone characters. Or use a strict US format: `pattern="\(?\d{3}\)?[ -]?\d{3}[ -]?\d{4}"`.

03

(Optional) Add the JS mask

On input, strip non-digits and reformat to `(XXX) XXX-XXXX`. The mask runs on every keystroke, giving live formatting feedback.

§ 03cEleventy production notesnative path · deploy · gotchas

What changes when this contact form (with phone) lives in Eleventy.

These notes come from the Eleventy platform registry and are rendered on this template page so crawlers see the framework-specific answer without opening a separate guide.

without splitforms

Eleventy is a Node-based static site generator — it produces HTML at build time and ships nothing else. There is no runtime, no /api/contact endpoint, no hooks for handling a form POST. The historical workarounds: (a) deploy to Netlify and use Netlify Forms, (b) write a Cloudflare Worker that handles POST /contact and forwards to your email provider (~4 hours plus ongoing operation), or (c) use a third-party form API (Formspree, Web3Forms, Basin, splitforms). Eleventy's data cascade lets you neatly pull an access key from _data/site.js and use it in a Nunjucks/Liquid include — but the actual delivery layer is always external. Splitforms is the lowest-friction external option.

deploy notes

Eleventy deploys to any static host. The form posts cross-origin to splitforms.com so the host is irrelevant for delivery. Eleventy v3's ESM-only config is the major upgrade gotcha — .eleventy.js (CommonJS) silently stops exposing globals; rename to eleventy.config.mjs. Local dev runs on localhost:8080 — add to splitforms allowed-domains for testing or use a separate dev key. _data/site.js (not .json) lets you read from process.env; keep .env in gitignore. For 11ty + Netlify (the classic combo), you can use Netlify Forms instead, but you cap out at 100/mo — splitforms gives 500/mo and works on every host.

Eleventy gotcha

Eleventy v3 is ESM-only — your config must be .mjs

If you upgraded to Eleventy 3 and your .eleventy.js (CommonJS) silently stopped exposing globals, that's why. Rename to eleventy.config.mjs and use ESM export default. Otherwise addGlobalData('splitformsKey', …) won't reach your templates.

Eleventy gotcha

Liquid filters and Nunjucks filters have different names

{{ '/thanks/' | url }} works in Nunjucks (with the eleventy-plugin-url plugin). In Liquid, the filter is | url_for or you skip the filter entirely and write the path literally. Mismatched filter names render nothing — the form's redirect URL becomes empty.

Eleventy gotcha

Global data with sensitive values gets committed by accident

If you put your access key in _data/site.json (the obvious place), it ships to your repo. Use _data/site.js and read from process.env.SPLITFORMS_KEY instead — then add .env to gitignore. Eleventy auto-loads .env if you have dotenv installed.

Eleventy gotcha

Permalinks: false on the contact page makes the redirect fail

If your contact page has permalink: false (rare but possible), it's not built — and splitforms's redirect target points at a 404. Always ensure both the form page and the /thanks page have valid permalinks.

PATTERN A

Pattern A — Nunjucks include from `_includes/partials/`

Save as src/_includes/partials/contact-form.njk. Use from any template with {% include "partials/contact-form.njk" %}. Pulls the key from a global data file that reads process.env.SPLITFORMS_KEY. Use the same wiring for the contact form (with phone) fields on this page.

pattern-a.htmlhtml7 lines
01<form action="https://splitforms.com/api/submit" method="POST">
02  <input type="hidden" name="access_key" value="{{ splitformsKey }}" />
03  <input type="hidden" name="redirect"   value="{{ '/thanks/' | url }}" />
04  <input name="email" type="email" required />
05  <textarea name="message" required></textarea>
06  <button type="submit">Send</button>
07</form>
PATTERN B

Pattern B — Eleventy v3 ESM config

Eleventy 3 is ESM-only. Use eleventy.config.mjs and addGlobalData to wire the key from environment. Liquid templates work the same way — just save as .liquid. Use the same wiring for the contact form (with phone) fields on this page.

pattern-b.htmlhtml6 lines
01// eleventy.config.mjs
02import "dotenv/config";
03export default function (config) {
04  config.addGlobalData("splitformsKey", process.env.SPLITFORMS_KEY);
05  return { dir: { input: "src", output: "_site" } };
06}
§ 04Field-by-field rundown6 fields · names you POST

What every field actually does.

Each field below ships in the contact form (with phone) template — rename, remove, or add your own. Splitforms accepts any name you POST.

nameREQUIRED
TEXT

Full name

Greeting + dashboard label so submissions don't all read 'anonymous'.

placeholder · Jane Builder
emailREQUIRED
EMAIL

Work email

Reply-to address — splitforms wires this so hitting reply goes back to the sender.

placeholder · jane@company.com
phoneREQUIRED
PHONE

Phone

Faster qualification — phone leads convert ~3× higher than email-only on B2B forms.

placeholder · +1 415 555 0142
company
TEXT

Company

Lets you sort enterprise vs SMB inquiries before you reply.

placeholder · Acme Inc
reasonREQUIRED
SELECT

What's this about?

Routes the lead to the right inbox folder or teammate.

Sales / pricingPartnershipsPress / mediaSupportCareersOther
messageREQUIRED
TEXTAREA

Message

Free-text context — what the visitor actually wants you to know.

placeholder · Give us context — links, dates, deal size, anything we should know.
§ 05Contact Form (with phone) on other frameworks21 frameworks · same backend

One backend. Every framework.

The same contact form (with phone) template works on every framework splitforms supports. Pick yours.

Contact Form (with phone) for HTML/forms/html/contact-detailed →Contact Form (with phone) for Next.js/forms/nextjs/contact-detailed →Contact Form (with phone) for React/forms/react/contact-detailed →Contact Form (with phone) for Vue/forms/vue/contact-detailed →Contact Form (with phone) for Astro/forms/astro/contact-detailed →Contact Form (with phone) for Svelte/forms/svelte/contact-detailed →Contact Form (with phone) for Webflow/forms/webflow/contact-detailed →Contact Form (with phone) for Carrd/forms/carrd/contact-detailed →Contact Form (with phone) for WordPress/forms/wordpress/contact-detailed →Contact Form (with phone) for Tailwind CSS/forms/tailwind/contact-detailed →Contact Form (with phone) for Hugo/forms/hugo/contact-detailed →Contact Form (with phone) for Gatsby/forms/gatsby/contact-detailed →Contact Form (with phone) for SvelteKit/forms/sveltekit/contact-detailed →Contact Form (with phone) for Framer/forms/framer/contact-detailed →Contact Form (with phone) for Nuxt/forms/nuxt/contact-detailed →Contact Form (with phone) for Bootstrap/forms/bootstrap/contact-detailed →Contact Form (with phone) for Jekyll/forms/jekyll/contact-detailed →Contact Form (with phone) for JavaScript/forms/javascript/contact-detailed →Contact Form (with phone) for Cloudflare Pages/forms/cloudflare/contact-detailed →Contact Form (with phone) for Netlify/forms/netlify/contact-detailed →Contact Form (with phone) for Vercel/forms/vercel/contact-detailed →
§ 06Questions9 answered

Contact Form (with phone) on Eleventy — FAQ.

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

01Does this contact form (with phone) work on Eleventy?
Yes. The form is plain HTML with a single POST endpoint, so it runs on any Eleventy site without server-side code, plugins, or SDKs. Drop the snippet into a Eleventy page or component and submissions land in your splitforms dashboard.
02How much does the contact form (with phone) cost on Eleventy?
Free for 500 submissions per month — no credit card, no trial. Pro is $5/mo for 5,000 submissions, and there's a one-time $59 3-year plan (15,000 submissions/mo for 36 months). The same pricing applies regardless of which framework hosts the form.
03Can I customize the fields?
Yes. The template ships with sensible defaults (full name, work email, phone, company…) — add, remove, or rename any of them. Splitforms accepts whatever fields you POST.
04How does spam protection work on the contact form (with phone)?
A hidden honeypot field catches dumb bots, and a tuned classifier scores the rest. You only see real submissions in your dashboard. No CAPTCHA, no friction for human users — and it works the same on Eleventy as on any other framework.
05Can I send the contact form (with phone) submissions to Slack or Discord?
Yes. Webhooks are available on Starter and above, with auto-formatted payloads for Slack, Discord, and WhatsApp (via CallMeBot). Or send raw signed JSON to any URL — Zapier, n8n, your own server. Configure in the splitforms dashboard.
06Will it work on a static Eleventy site?
Yes — the form posts directly to splitforms from the browser, so no server is involved. Works on Vercel, Netlify, GitHub Pages, Cloudflare Pages, S3, or any plain Apache host.
07Why use type="tel" if it doesn't do anything special on desktop?
Two reasons. (1) Mobile keyboards: tel triggers the numeric keypad, dramatically reducing typos. (2) Accessibility: screen readers announce the field type, helping users with assistive tech understand what's expected. The 'no desktop benefit' is a feature, not a bug — the behavior matches user intent.
08Should I validate international or US-only?
Depends on your audience. International contact forms should accept any format (use a permissive pattern + server-side normalization). US-only forms can use a strict pattern that matches `(555) 123-4567`. Either way, splitforms accepts whatever format the user submits — the validation is for UX, not data integrity.
09Does the JS mask work with paste?
Yes — listen for both `input` and `paste` events, and reformat on every change. The pattern only validates on submit, so the mask gives live feedback as the user types or pastes.
§ 07Comparisonvs Web3Forms · vs Formspree

splitforms vs everything else.

Same drop-in API. More free submissions, Starter signed webhooks, MCP support no other backend has.

FeatureWeb3FormsFormspreesplitforms
Free monthly submissions25050500
Custom fields beyond contactYesPro tierFree
Webhooks (Slack / Discord)Pro tierPro tierFree, signed
AI / MCP submission inboxNoNoYes
Long-term plan (3-year flat)——$59 every 3 years
§ 08More templates for Eleventy5 adjacent patterns

Other ready-to-ship Eleventy forms.

Same backend, different qualifying fields. Click through to copy the snippet.

Eleventy · Newsletter SignupNewsletter Signup for EleventyEmail-only newsletter capture — perfect for footers and landing pages.view template →Eleventy · WaitlistWaitlist for EleventyPre-launch capture form with optional referral source.view template →Eleventy · Lead Magnet DownloadLead Magnet Download for EleventyEmail-gated download form for ebooks, PDFs, checklists, and templates.view template →Eleventy · Feedback FormFeedback Form for EleventyRating + free-text feedback with optional follow-up email.view template →Eleventy · Quote RequestQuote Request for EleventyLead-capture form for agencies, freelancers, and service businesses.view template →
✦ keep browsing on Eleventy
✦ contact form (with phone) on other frameworks
✻ ✻ ✻

Ship a contact form (with phone) on Eleventy in 60 seconds.

500 submissions per month, free forever. No credit card. Copy the snippet above and paste it into your Eleventy project.

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