Email Builder Plugin SDK

Scalable, Flexible,
Plug and Play

Embed a white-label editor into your UI, or run headless via API.

Start free. Scale to enterprise.

Get API Key → Open Sandbox →
No credit card required
Embed an email editor into your app

The Modular Email Builder for Your App

Embed a battle-tested email editor with a few lines of code. Start for free, customize deeply, and scale to enterprise volume.

Embed in minutes, not months
Initialize with a simple config and launch a full-featured email editor inside your app in no time.
Native UI & Total Control
Your CSS, your rules. Match your brand identity perfectly and feel indistinguishable from the rest of your UI.
JSON-First Architecture
Don't get locked into HTML. Store templates as flexible JSON data, manipulate it, and generate HTML via our API.
Enterprise Scale, Startup Speed
ISO 27001 certified, GDPR compliant, and vetted by global enterprises. Start for free, then scale to be one of them.

Chamaileon SDK pricing plans

Pre-paid monthly plans. No annual lock-ins.

Starter

Ideal for starting projects

FREE
What's included
  • MAU: 10 MAU (monthly average users = unique editor loads) keeps pricing aligned to real usage you already track.
  • Generator calls: 100 Each export counts once; expect 2-3x per send with reviews.

Standard

Ideal for 100-200 MAU scaling apps or internal comms

from
$200 /month
What's included
  • MAU: 200 MAU-based pricing mirrors audience size and keeps budgeting simple.
  • Generator calls: 500 Exports map to real work; QA and reviews drive most of the volume.

Scale

Ideal for 200-1000 MAU growth-stage SaaS

from
$600 /month
What's included
  • MAU: 1000 MAU keeps usage forecasts and budgeting predictable.
  • Generator calls: 15,000 Assume 2-3 exports per campaign to cover tests and approvals.

Enterprise

We have everything.
Let's talk.

What we can offer
  • Unlimited usage, no hidden fees Unlimited editor loads and exports for high-volume programs, with clearly defined contract terms and no usage-based fees beyond the agreement.
  • ISO 27001, SSO, 2FA, indemnity insurance Proven record supporting customers in regulated industries, with ISO 27001, SAML/SSO, enforced 2FA, and liability coverage.
  • EU/US data residency & encryption Data encrypted in transit and at rest, with EU and US data residency options to meet compliance requirements.
  • Annual contract, SLA, MSA, DPA Custom annual or multi-year contracts with defined SLAs, invoicing, DPAs, and procurement-friendly terms.
  • Versioned SDKs, docs, and test env Backward-compatible SDK releases, clear upgrade paths, extensive docs, and a dedicated test environment.
  • Named technical contact (TAM) Dedicated technical contact for onboarding, architecture guidance, and ongoing support with defined response times.

This is not a fit if

You just need a few static emails

If your product sends a handful of hardcoded templates that rarely change, adding an embedded email builder will introduce unnecessary complexity.

You are looking for a full email marketing platform

Chamaileon SDK does not handle audience management, campaign scheduling, automation, or delivery. It is designed to power email and landing creation inside your own tool.

Chamaileon SDK is built for

Want email creation to feel native to their product

Chamaileon SDK is designed for SaaS teams and internal software that want users to create, edit, and manage emails directly inside their own UI — whether through an embedded editor, a headless API, or a hybrid approach. It fits products that value speed, flexibility, and long-term scalability without owning email HTML complexity.

Embedded email creation inside a SaaS product

Check the State of Embedded Email Builders 2026 Research

Plugins

Learn more about the plugins that's available for white-label integration. All bundled into default pricing and can be configured.

You can grow on the go, as your users demand more from you.

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Drag 'n' Drop Email Builder

The most-flexible email editor on the market

  • Configurable elements
  • Pixel-perfect email designs
  • Real-time collaboration enabled
  • Simplified email creation
  • Minimized tab-switching for your users
  • + Best email HTML on Earth

Chamaileon SDK - email editor plugin

Email HTML Importer

Import legacy email HTML and assets without the cleanup work. Our engine parses imports into editable JSON, auto-correcting structural issues and standardizing the HTML for perfect responsiveness.

Hint: With this, you can offer a migration suite to let users migrate all their emails from other tools!

Chamaileon SDK - email importer plugin
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Email HTML Generator

You can choose to generate email HTML automatically from the visual editor OR call the Generator only when it is truly needed.

There are switches and settings for the latter. If your users ever asked support about:

  • Email Accessibility
  • Outlook Background Images
  • Gmail Promo Cards
  • Encoded URLs
  • Fully-Clickable Buttons
your answer can be YES! with our SDK.

Chamaileon SDK - email html generator plugin

Email preview

Provide a precise preview of how an email would look like on desktop and mobile devices, even in dark mode.

Let your customers see how the different email generator settings influence the email size and also show them how the personalized versions of their emails will look like.

Chamaileon SDK - email preview plugin

Email Thumbnails

Use the thumbnail plugin to generate always up-to-date preview images of every email/template your customers create.

Chamaileon SDK - email thumbnail plugin

Asset Gallery

The gallery could store all the images and other assets users like to use in their email design in an organized way.

Chamaileon SDK - gallery plugin

Addons to cut dev cost

and boost revenue

Addons can be used to set up custom email builder functionality, while still using our email JSON format.

The addons on the right are examples of custom stuff that you could create for your users with minimal effort.

Email Creation Heaven without hassle

Below are some examples of elements already built by us and can be included in your integration.

  • Countdown timers
    to boost urgency in promotional emails
  • Event invitations
    to promote upcoming events
  • Surveys & polls
    to gather customer insights
  • Coupons & discounts
    to drive sales with special offers
  • Ratings & reviews
    to build trust with customer feedback
  • Maps
    to show location-based info in newsletters and event invites
  • QR codes
    to connect offline and online experiences
  • Dynamic weather widgets
    to add personalized weather info

Addons already built by us

Social media buttons
to link to social profiles
Video placeholders
to link to video content
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Icon and illustration libraries
to satisfy users looking for built-in asset libraries
Social media embeds
screenshot previews of social media posts

Important features by default

Chamaileon SDK comes packed with essential features that make email creation seamless and efficient for your users.

These built-in capabilities ensure a smooth experience right from the start, reducing the need for additional development and speeding up your time to market.

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Landing page builder

Create responsive landing pages with the same drag-and-drop editor your users know, resulting designs that match their emails.

Chamaileon SDK - landings pages
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Brand Design System

Make the editor feel native to your user’s brand. By giving them a design system (fonts, colors, logos, etc), you turn a generic tool into their personalized workspace.

Chamaileon SDK - Design System

Dynamic Content

Advanced Loop, Conditional, and Dynamic elements

Personalization is a must in modern email marketing. You can expose email templating language features as a visual editor for your users to use in the email content and also create dynamic sections that show/hide based on the recipient data.

Chamaileon SDK - dynamic content

Security & Compliance

ISO 27001 certified, liability insurance

Satisfied clients in regulated industries rely on Chamaileon SDK to meet their email needs.

Book a demo to learn more about our SDK

Book a demo

Book a slot in my calendar
Chamaileon SDK Demo Call
30 min
Roland Profile picture
Host
Roland Pokornyik
CEO & Co-founder @ Chamaileon