Title: Sun Form Builder
Author: suformdev
Published: June 29, 2026
Last modified: June 29, 2026
---
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# Sun Form Builder
By [suformdev](https://profiles.wordpress.org/wpformdev/)
[Download](https://downloads.wordpress.org/plugin/sunformbuilder.1.0.0.zip)
* [Details](https://wordpress.org/plugins/sunformbuilder/#description)
* [Reviews](https://wordpress.org/plugins/sunformbuilder/#reviews)
* [Installation](https://wordpress.org/plugins/sunformbuilder/#installation)
* [Development](https://wordpress.org/plugins/sunformbuilder/#developers)
[Support](https://wordpress.org/support/plugin/sunformbuilder/)
## Description
**Sun Form Builder** is a modern, lightweight form builder for WordPress that lives
natively inside the Gutenberg block editor. Drop the **Sun Form** block into any
post, page or template and build the form visually using a rich set of field controls—
no coding required.
Each form is stored as its own post (`sun_forms`), so you can manage all of your
forms from a single dashboard, embed them anywhere with a shortcode, and customize
per-form styles that are automatically compiled into a dedicated CSS file.
#### Highlights
* Build forms visually inside the **Gutenberg block editor** using the `Sun Form`
block.
* Reusable **Email Templates** powered by Twig, edited with the WordPress CodeMirror
editor.
* Shortcode embedding from any builder or classic editor: `[sun_form id="123"]`.
* Dedicated **Sun Forms** admin menu with form list, email templates and settings.
* **Mailchimp** integration out of the box (additional integrations available in
the Pro version).
* Per-form generated CSS stored under `wp-content/uploads/sun-form-builder/css/`
for fast frontend rendering.
* SVG upload support enabled for icon/branding usage inside forms.
* Conditional asset loading — submission script and styles are only enqueued on
pages that actually use a form.
* Developer-friendly: clean hooks, custom post types and filters (`block_categories_all`,`
upload_mimes`, etc.).
#### Field & Form Features
* Multiple field types: text, email, textarea, select, checkbox, radio, and more.
* Customizable labels, placeholders, validation and required state per field.
* Email notifications rendered through a Twig-based template (`{% for key, item
in data %}` etc.).
* Default email template auto-created on first run so the plugin works immediately
after activation.
* Admin column showing the shortcode for every form for quick copy & paste.
#### Integrations
Free version:
* **Mailchimp** — connect with your Mailchimp API key under _Sun Forms Settings
Integrations_.
Available in the Pro version (Sun Form Builder Pro):
* GetResponse, ActiveCampaign, MailerLite, Sendinblue, SendFox, Constant Contact
* Google reCAPTCHA
* Google Sheets
* Zoho CRM
* Stripe payments
### External services
This plugin connects to the **Mailchimp** API to add form subscribers to a Mailchimp
audience you have configured. Mailchimp is a third-party service provided by _The
Rocket Science Group LLC d/b/a Mailchimp_.
**When data is sent to Mailchimp**
Requests are sent to the Mailchimp REST API at `https://.api.mailchimp.com/3.0/`(
where `` is the data center derived from your API key, e.g. `us1.api.mailchimp.
com`, `us21.api.mailchimp.com`, etc.) only in the following cases:
* A site administrator saves or updates a Mailchimp API key on _Sun Forms Settings
Integrations_ (the key is sent once to authenticate with Mailchimp and verify
the connection).
* A site administrator configures the Mailchimp integration on a form inside the
block editor — the plugin requests the available audiences, interest groups and
merge fields from Mailchimp so they can be selected in the editor UI.
* A visitor submits a form that has the Mailchimp integration enabled by the site
administrator.
No data is sent to Mailchimp on any frontend page view, nor when the Mailchimp integration
is not enabled for a form.
**What data is sent to Mailchimp**
When a visitor submits a form configured to use the Mailchimp integration, the following
data is sent:
* The Mailchimp **API key** stored on the settings page (used for authentication
only, sent as an HTTP `Authorization: Basic` header).
* The **audience / list ID** that the site administrator has selected for the form.
* The visitor’s **email address** from the form.
* Any additional **merge fields** that the site administrator has mapped between
the form fields and the Mailchimp audience (e.g. first name, last name, address,
phone number).
No personal data is sent to Mailchimp unless you (the site administrator) explicitly
map a Mailchimp integration to one of your forms.
**Mailchimp legal documents**
* Terms of Use: [https://mailchimp.com/legal/terms/](https://mailchimp.com/legal/terms/)
* Privacy Policy: [https://mailchimp.com/legal/privacy/](https://mailchimp.com/legal/privacy/)
By enabling the Mailchimp integration in this plugin, you acknowledge that the data
described above will be transmitted to and processed by Mailchimp in accordance
with their Terms of Use and Privacy Policy.
### Credits
Built with love on top of the WordPress block editor. Email templates are powered
by [Twig](https://twig.symfony.com/).
## Screenshots
[⌊Build forms visually with the Sun Form Gutenberg block.⌉⌊Build forms visually
with the Sun Form Gutenberg block.⌉[
Build forms visually with the **Sun Form** Gutenberg block.
## Blocks
This plugin provides 1 block.
* Form
## Installation
1. Upload the `sun-form-builder` folder to `/wp-content/plugins/`, or install the
plugin through the WordPress **Plugins** screen.
2. Activate the plugin through the **Plugins** menu in WordPress.
3. Go to **Sun Forms** in the admin sidebar to create your first form.
4. (Optional) Open **Sun Forms Settings** to connect Mailchimp and configure integrations.
5. Embed a form in any post or page using either:
6. * The **Sun Form** Gutenberg block, or
* The shortcode `[sun_form id="FORM_ID"]` (the form ID is shown in the Shortcode
column of the forms list).
## FAQ
### Do I need the Gutenberg editor to use this plugin?
The form builder UI is built as a Gutenberg block, so you’ll use Gutenberg to design
forms. Once a form is created, you can embed it anywhere using the `[sun_form id
="..."]` shortcode, including the classic editor and most page builders.
### How do I embed a form in a post or page?
Either insert the **Sun Form** block from the _WP Form Builder_ category, or paste
the shortcode `[sun_form id="123"]` (replace `123` with the ID shown in the Shortcode
column of _Sun Forms All Forms_).
### How do I customize the notification email?
Go to **Sun Forms Email Templates**, open a template and edit the HTML in the CodeMirror
editor. The plugin uses Twig syntax, so you can loop through submitted fields with`{%
for key, item in data %} ... {% endfor %}` and output values like `{{ item.label}}`
and `{{ item.value }}`.
### Where are the per-form styles stored?
Each form’s compiled CSS is written to `wp-content/uploads/sun-form-builder/css/{
form_id}.css` and is only enqueued on pages that actually contain the form (via
block or shortcode).
### How do I connect Mailchimp?
Open **Sun Forms Settings Integrations**, paste your Mailchimp API key into the
Mailchimp field and click **Save**.
### Does this plugin support file or SVG uploads?
Yes. The plugin registers `image/svg+xml` as an allowed mime type so SVG files can
be uploaded through the standard WordPress media library.
### Is there a Pro version?
Yes. **Sun Form Builder Pro** adds more integrations (reCAPTCHA, Google Sheets,
Zoho CRM, additional email marketing services and Stripe payments). The free plugin
will automatically stand down if the Pro version is active.
## Reviews
There are no reviews for this plugin.
## Contributors & Developers
“Sun Form Builder” is open source software. The following people have contributed
to this plugin.
Contributors
* [ suformdev ](https://profiles.wordpress.org/wpformdev/)
[Translate “Sun Form Builder” into your language.](https://translate.wordpress.org/projects/wp-plugins/sunformbuilder)
### Interested in development?
[Browse the code](https://plugins.trac.wordpress.org/browser/sunformbuilder/), check
out the [SVN repository](https://plugins.svn.wordpress.org/sunformbuilder/), or
subscribe to the [development log](https://plugins.trac.wordpress.org/log/sunformbuilder/)
by [RSS](https://plugins.trac.wordpress.org/log/sunformbuilder/?limit=100&mode=stop_on_copy&format=rss).
## Changelog
#### 1.0.0
* Initial release.
* Gutenberg block `sun-formbuilder/form` for visual form building.
* Custom post types `sun_forms` and `sun_email_template`.
* Shortcode embedding: `[sun_form id="..."]`.
* Per-form CSS generation and conditional asset loading on the frontend.
* Twig-based email templates with a default template seeded on first run.
* Mailchimp integration and settings page.
* SVG upload support.
## Meta
* Version **1.0.0**
* Last updated **1 day ago**
* Active installations **Fewer than 10**
* WordPress version ** 5.8 or higher **
* Tested up to **7.0**
* PHP version ** 8.1 or higher **
* Tags
* [contact form](https://wordpress.org/plugins/tags/contact-form/)[email template](https://wordpress.org/plugins/tags/email-template/)
[form builder](https://wordpress.org/plugins/tags/form-builder/)[Gutenberg block](https://wordpress.org/plugins/tags/gutenberg-block/)
[mailchimp](https://wordpress.org/plugins/tags/mailchimp/)
* [Advanced View](https://wordpress.org/plugins/sunformbuilder/advanced/)
## Ratings
No reviews have been submitted yet.
[Your review](https://wordpress.org/support/plugin/sunformbuilder/reviews/#new-post)
[See all reviews](https://wordpress.org/support/plugin/sunformbuilder/reviews/)
## Contributors
* [ suformdev ](https://profiles.wordpress.org/wpformdev/)
## Support
Got something to say? Need help?
[View support forum](https://wordpress.org/support/plugin/sunformbuilder/)