Platform
The system, as software your team can use.
Everything we build for clients rests on one tested component library. The platform puts that library in your team’s hands: check any email, build new ones safely, and export to the platform you already use.
A brand name and one colour become a complete token set: light and dark palettes corrected to WCAG AA, type and corners. The real journey emails re-theme instantly, so a prospect sees their system before it is built.
- Contrast fixed automatically, with the working shown
- Light and dark mode side by side
- Five journey emails
- Live Health Check score
Nineteen automated checks across rendering, dark mode, accessibility and deliverability, including WCAG text contrast. Paste any email’s HTML and get a scored, downloadable report in seconds. Runs in the browser; nothing is uploaded.
- Scored report by area
- WCAG 2.2 contrast and structure checks
- Gmail clipping and unsubscribe compliance
- PDF report to share internally
The builder your marketing team uses once a system is in place. Brand, layout and rendering code are locked; words, images and block order are not. Every change is scored before it can leave.
- Fourteen components and six journey templates
- Personalisation with platform merge tags
- Export for Klaviyo, Braze, SFMC, Dynamics 365, HubSpot and Mailchimp
- Plain-text versions, undo, drafts and share links
The tested foundation under everything: brand tokens, components and journeys, hand-coded for Outlook, Gmail, Apple Mail and dark mode, and checked by an automated test suite on every change.
- Token layer per brand, light and dark
- Every email under 20 KB
- WCAG AA contrast enforced by tests
- Documentation and handover
On the roadmap
In development with system clients. Priorities are set by what preview clients need first; nothing here has a committed date.
MCP server
Claude reads your live system and sends drafts straight to Composer review. Available now as a client build; see AI.
Direct platform connectors
Push templates straight into Klaviyo, Braze and HubSpot instead of exporting files.
Team approvals
Draft, review and approve inside the Composer, with roles for marketing, brand and legal.
Live programme monitoring
Scheduled Health Checks on your sent emails, with alerts when a score drops.
Rendering screenshots
Real client screenshots alongside the automated checks.
Join the Composer preview.
The preview is open to brands with a system built by Inbox Innovation, and opens more widely next year. Join the waitlist to hear first.
See pricingsubject: Hello {Charlotte} ✓ resolved
Every email is a template. Make yours unbreakable.
Your brand defined once as data. Components that only fit one way. Your team fills in the words; the system handles Outlook, dark mode and accessibility.
// tokens/harbour-house { "accent": "#1F4E5A", "display": "Georgia", "radius": 2, "dark": { "accent": "#8FC0C8" } } ✓ contrast AA · ✓ dark mode · ✓ Outlook
