Unlayer (YC W22) – Add email and document builders to your app

Hi HN, We’re Adeel and Umair, co-founders of Unlayer (https://unlayer.com/). We let you add content creation to your applications without having to build an entire editor, renderer, template, and export stack yourself. Unlayer lets you create emails, web pages, and documents inside your app, in three different ways: in code, visually, or with AI.Here’s a demo: https://www.youtube.com/watch?v=0HsDtNkdMpM.We started with an embeddable email editor because a lot of products eventually need one: CRMs, marketing tools, customer engagement platforms, marketplaces, internal tools, and vertical SaaS apps all run into this at some point. At first, it sounds like a small feature: "just" add a drag and drop editor. In practice, it turns into a big pain. You end up dealing with email rendering, Outlook quirks, responsive layouts, templates, merge tags, image uploads, exports, permissions, localization, versioning, and a long tail of edge cases that have nothing to do with your core productOver time, we saw the same problem beyond email. Apps also need landing pages, invoices, proposals, reports, contracts, and PDFs. Some of this content is best created visually by end users. Some of it is better generated in code by developers. Increasingly, some of it is also generated by AI agents. Many teams eventually need all three workflows. That is the direction we have been working toward with Unlayer.There are three parts we are showing today:(1) Unlayer Elements. This is our open-source React component library for creating emails, pages, and documents in code (repo: https://github.com/unlayer/elements, more at https://unlayer.com/elements). Instead of hand-writing raw HTML templates, developers can compose content using React components, reuse sections like headers, footers, CTAs, invoice rows, and branded blocks, keep templates in Git, and render them into production output.One newer use case we are seeing is

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BUILD

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Unlayer embeds content creation (email, documents, pages) into SaaS apps so founders don't rebuild the rendering, templating, and export infrastructure themselves.

The pain

Product teams repeatedly hit the same wall: their app needs to generate formatted content (emails, invoices, proposals, PDFs). Building this in-house means solving email rendering quirks, responsive layouts, template systems, image hosting, versioning, and export formats, none of which is their core business. Each team solves it separately, wasting engineering time.

The gap

No single tool lets developers embed content creation three ways (code-first React components, visual drag-drop editor, AI generation) into their app without building the entire stack. Existing solutions are either too rigid (template engines), too limited (email-only), or require heavy customization.

Build angle

Start with the code-first angle (Unlayer Elements as open-source React components). This gets developer adoption, Git-friendly workflows, and a moat through community contribution. Expand to visual editor and AI generation as paid tiers. Charge per-seat or per-document-generated. Target vertical SaaS first (they have budget and acute pain), then horizontal SaaS (CRMs, marketing platforms).

Strengths

  • YC-backed with proven founders and existing customer base (W22 cohort)
  • Solves a real, recurring problem across dozens of SaaS categories
  • Three-layer approach (code, visual, AI) covers different user personas and future-proofs against AI shifts
  • Open-source component library creates network effects and lowers adoption friction
  • High switching costs once embedded in a product's workflow
  • Clear monetization path (API usage, seats, premium features)

Risks

  • Competitive pressure from larger platforms (Stripe, Zapier, Make) adding content creation features
  • Customer concentration risk if a few large accounts drive majority of revenue
  • Rendering quality and email client compatibility is a moving target (Outlook updates break layouts regularly)
  • AI generation quality and cost may not justify premium pricing if open models improve rapidly
  • Sales cycle is long (enterprise SaaS) and requires deep integration work per customer
  • Churn risk if customers build their own solution once they understand the problem

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