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Contact form · Bootstrap
Contact form for Bootstrap sites
Bootstrap 5's form components handle the UI; splitforms handles the backend. Use .form-control + .was-validated for native validation, POST to splitforms, and ship a working contact form in minutes.
- 500 free / mo
- 14ms latency
- No backend code
No backend code
No server, API route, or SDK. Your Bootstrap form posts straight to one endpoint.
Straight to your inbox
Every submission is emailed to you and saved to a searchable dashboard — spam filtered before it reaches you.
Design without limits
It's your own Bootstrap markup and styles. Splitforms is only the backend, so nothing constrains how the form looks.
Copy-paste ready
Your Bootstrap contact form, ready to paste.
Replace YOUR_ACCESS_KEY with the key from your dashboard — that's the whole integration. No SDK to install, no build step, just the html you already write.
<form id="contact" class="row g-3 needs-validation" novalidate>
<input type="hidden" name="access_key" value="YOUR_ACCESS_KEY" />
<div class="col-12">
<label for="name" class="form-label">Name</label>
<input id="name" name="name" type="text" class="form-control" required />
<div class="invalid-feedback">Please enter your name.</div>
</div>
<div class="col-12">
<label for="email" class="form-label">Email</label>
<input id="email" name="email" type="email" class="form-control" required />
<div class="invalid-feedback">Please enter a valid email.</div>
</div>
<div class="col-12">
<label for="topic" class="form-label">Topic</label>
<select id="topic" name="topic" class="form-select" required>
<option value="" selected disabled>Choose a topic…</option>
<option value="sales">Sales</option>
<option value="support">Support</option>
<option value="other">Other</option>
</select>
<div class="invalid-feedback">Please pick a topic.</div>
</div>
<div class="col-12">
<label for="message" class="form-label">Message</label>
<textarea id="message" name="message" rows="4" class="form-control" required></textarea>
<div class="invalid-feedback">Don't forget the message.</div>
</div>
<!-- Honeypot — invisible to humans -->
<input type="checkbox" name="botcheck" class="d-none" tabindex="-1" />
<div class="col-12">
<button type="submit" class="btn btn-primary">Send message</button>
<span id="status" class="ms-2 text-muted small"></span>
</div>
</form>
<script>
(() => {
const form = document.getElementById("contact");
const status = document.getElementById("status");
form.addEventListener("submit", async (e) => {
e.preventDefault();
form.classList.remove("was-validated");
if (!form.checkValidity()) { form.classList.add("was-validated"); return; }
const btn = form.querySelector('button[type="submit"]');
btn.disabled = true;
status.textContent = "Sending…";
try {
const res = await fetch("https://splitforms.com/api/submit", {
method: "POST",
body: new FormData(form),
});
const data = await res.json();
if (data.success) {
status.textContent = "Thanks — we'll be in touch.";
form.reset();
} else {
// Server-side error → flag the offending field Bootstrap-style.
// Add .is-invalid to the input and its sibling .invalid-feedback shows.
status.textContent = data.message || "Something went wrong.";
}
} catch {
status.textContent = "Network error — please try again.";
} finally {
btn.disabled = false;
}
});
})();
</script>How to add it
How to add a contact form to a Bootstrap website.
To add a contact form to a Bootstrap website you need three things: a free splitforms access key, the html snippet above, and your key pasted into it. No backend, server, or SDK — the form posts to one URL and every submission lands in your inbox and dashboard.
Drop the Bootstrap snippet into your project
Copy the Bootstrap code example into your project and replace YOUR_ACCESS_KEY with the key from step 1.
Receive submissions in your dashboard
Submissions arrive in the splitforms dashboard within seconds. Free includes inbox delivery; Pro adds Slack, Discord, Sheets, or any signed webhook URL.
Where submissions go
Where do your Bootstrap form submissions go?
Every submission is emailed to you and saved to a searchable dashboard — spam filtered before it ever reaches you. Search, export to CSV, or forward it to a webhook or Slack on Pro.
- 500 submissions per month, free forever
- Honeypot + AI spam classifier on every plan
- Signed webhooks to Slack, Discord, your server
No backend needed
Do you need a backend for a Bootstrap form? No.
Your Bootstrap form posts standard FormData to one URL. Splitforms validates the access key, runs the spam classifier, and forwards it to your email — so there's no server, API route, or database for you to build or maintain.
- Native Bootstrap 5 validation classes — .form-control, .form-label, .form-select, .invalid-feedback
- Works with every Bootstrap theme (Bootswatch, MDB, Tabler, Tailwind+Bootstrap)
- AI spam classifier on the splitforms side — drop reCAPTCHA, keep conversion
Best practices
What a production-ready Bootstrap form needs.
The difference between a form that works in the demo and one that survives launch traffic — the production-tested defaults, in priority order.
- Use the .needs-validation + novalidate + .was-validated trio verbatim — it's Bootstrap's official validation contract. Don't reinvent validation UI on top of it.
- Wrap each field in a .mb-3 (or .col-12 inside a .row.g-3 grid) with the .form-label, the input, and a .invalid-feedback div as siblings — Bootstrap's CSS selectors expect that structure.
- Use .form-select for dropdowns, not <select class="form-control">. Bootstrap 5 split selects from text inputs; styling a <select> with .form-control under-renders in 5.x.
How SplitForms works
From form to workflow in 3 simple steps.
Connect your form, collect every submission, and send data where it needs to go — without building backend infrastructure.
Add your endpoint
Point your form to your unique SplitForms endpoint. That's it.
Receive submissions
We instantly capture and organize every submission in your inbox.
Route anywhere
Send data to email, spreadsheets, CRMs, webhooks, and 7,000+ apps.
No credit card required. Set up in under 60 seconds.
Connect & automate
Connect your favorite tools and automate everything
SplitForms works with the destinations you route to and the platforms you build on — from Slack and Sheets to WordPress, Shopify, and Next.js.
Trusted by indie teams and agencies shipping forms worldwide
PETAL/COKRAFT.DELINEAR-XBUILD.DEVSTUDIO 71MERIDIANFRAME&CO
Testimonials
Loved by developers shipping at every scale.
40 quotes on record — from indie hacks to agency migrations.
“I replaced a Lambda + DynamoDB + SES contact form with six lines of HTML. It took eleven minutes, and the dashboard is better than what I was going to build.”
“We migrated 14 client sites off Formspree in a single weekend. The price is a third of what we paid, the API is more honest, and the spam filter actually works.”
“The webhook payload is signed, idempotent, and well-shaped. It reads like code from a competent team, not a CRUD app held together with duct tape.”
“I stopped reaching for Typeform on small marketing sites. splitforms covers 90% of the use case at none of the bloat.”
“I onboarded our whole agency in an afternoon. The MCP integration meant Cursor literally dropped the form straight into our client repos for us.”
“The free plan gave me 500 submissions before I paid a cent, and Pro is five dollars a month. I've spent more on coffee deciding which backend to use.”
“Spam went from forty junk entries a day to zero, with no reCAPTCHA puzzle ruining the form. The honeypot and time-trap just quietly do their job.”
“Point the form action at one endpoint and you're done. No SDK, no client library, no build step. This is how a form backend should feel.”
“Leads land in Slack the second someone submits, and a copy goes to Google Sheets for the sales team. I wired both up in under ten minutes.”
“I run a static Hugo site on a five-dollar VPS. splitforms gave it a real contact form without me standing up a single server.”
Questions
Bootstrap contact form questions.
View all FAQsHow do I add a Bootstrap contact form?
Copy the snippet above, include Bootstrap 5's CSS (bootstrap.min.css) on the page, and replace YOUR_ACCESS_KEY with your splitforms key. The form validates client-side via .needs-validation, then POSTs to splitforms through fetch and shows the result inline in the #status span.
Does splitforms need Bootstrap's JavaScript bundle?
No. The contact-form snippet uses plain fetch plus Bootstrap's CSS validation classes. The Bootstrap JS bundle is only needed if the same page also uses dropdowns, modals, or offcanvas. You can ship the form with just the stylesheet.
How do I show server-side per-field errors with .is-invalid?
When splitforms returns { success: false, message }, add the .is-invalid class to the relevant input (emailField.classList.add('is-invalid')) and write the error text into its sibling .invalid-feedback div. Bootstrap's CSS reveals .invalid-feedback automatically whenever the preceding control has .is-invalid. Clear the class before the next submit.
Bootstrap 4 vs Bootstrap 5 — does it matter for splitforms?
No — the POST is identical. Bootstrap 5 renamed .form-group to .mb-3, split selects out into .form-select, and dropped the jQuery dependency. If you're on Bootstrap 4, swap .form-select for <select class="form-control"> and keep the rest of the snippet as-is.
How do I handle form errors in Bootstrap?
Two layers. Client-side: the .needs-validation + .was-validated pattern handles required/format errors with no JavaScript beyond the one-line checkValidity switch. Server-side: read data.message from the splitforms response and either render it in a #status element or flag the offending field with .is-invalid so its .invalid-feedback shows.
Can I use this with Bootstrap-flavored frameworks (MDB, Bootswatch, Tabler)?
Yes — they all extend Bootstrap's class system, so .form-control, .form-label, .form-select, and .invalid-feedback all work unchanged. MDB ships its own .validate() JS; if you enable it, let MDB drive client validation and keep the fetch handler only for delivery.
needs-validation + novalidate is a pair — drop either and validation double-fires or never fires
Bootstrap's client-side validation contract is two attributes working together: <form class="needs-validation" novalidate>, plus a submit handler that adds .was-validated. The novalidate attribute turns off the browser's native bubbles so Bootstrap's .invalid-feedback styling is the only UI; .needs-validation is the selector your JS targets. Forget novalidate and you get two sets of error UI (native + Bootstrap) fighting each other. Drop .needs-validation and your querySelectorAll('.needs-validation') finds nothing, so no fields ever get validated. Copy the pair verbatim.
.invalid-feedback stays display:none without .was-validated on the form or .is-invalid on the field
Bootstrap's CSS is .was-validated .invalid-feedback { display: block } and .is-invalid ~ .invalid-feedback { display: block }. Render .invalid-feedback divs but never add .was-validated to the form (or .is-invalid to the specific input) and the feedback stays invisible — users click Send and nothing appears. For client-side errors use the .was-validated form-level switch (the snippet above); for server-side per-field errors from splitforms (e.g. a rejected email), target the specific input: emailInput.classList.add('is-invalid') and write the message into its sibling .invalid-feedback.
Bootstrap 5 dropped jQuery — but many themes still bundle it and double-bind submit
Bootstrap 5's dropdowns, modals, and offcanvas are vanilla JS, but plenty of themes (AdminLTE derivatives, older SB Admin, bootswatch+jQuery combos) still ship jQuery and call $(form).submit(...). If the theme's jQuery handler and your fetch handler both bind to the same form, the form can POST twice — or the theme handler calls e.preventDefault() and silently cancels yours. Open DevTools → Event Listeners on the <form>, confirm only your handler is bound, and strip legacy attributes like data-toggle="validator" and data-toggle="form-validator" that re-attach third-party validators.
Simple pricing
Start free. Scale when you need more.
Choose a plan that fits your workflow — from a free form endpoint to full automations, exports, and higher submission limits.
Free
$0
Free forever
For side projects and indie devs.
- 500 submissions / mo
- Unlimited forms
- Email notifications included
- Honeypot spam filtering
- Submissions dashboard
- MCP setup stays free
- No credit card required
Most Popular
Pro
$5/ month
was $15 · save 67% · new-user price
For agencies and growing products.
- 5,000 submissions / mo
- Unlimited forms
- Every paid feature included
- Priority support (under 4hr)
- 10× free submission volume
- Cancel anytime
Pre-launch · founders pricing locked in
3-Year
$59/ 36 months
was $99 · save 40% · new-user price
Pay $59. 3 years sorted.
- 15,000 submissions / mo
- Unlimited forms
- Everything in Pro
- Renews every 3 years
- Long-term discount
- Priority support included
- Vote on the roadmap
No credit card required on Free • Cancel anytime