Better Email vs. Stensul
Both platforms agree on the goal: marketers should assemble on-brand emails from governed modules instead of fighting raw HTML. The difference is who owns the foundation. In Stensul, modules and guardrails are configured inside the platform, typically with Stensul's team during onboarding. In Better Email, the design system is code your own developers write and evolve: HTML and Liquid with typed settings and validations.
Overview
Both platforms are built for enterprise teams that take governance seriously. The choice comes down to whether your design system is something you own in code, or something configured for you.
Last updated July 2026
| Category | Better Email | Stensul |
|---|---|---|
Email Design System | A code-based Email Design System. Modules are written in HTML and Liquid with typed settings and validations | Governed modules with locked elements and style variations, configured during a guided onboarding |
Editor experience | You design the editor. Marketers only see the modules and inputs your design system exposes | A no-code modular builder where marketers assemble governed modules |
Brand control | Structural. Validations and locked palettes make off-brand input impossible | Admin-level locks on fonts, colors, and layouts, with real-time brand validation |
AI | Betty builds campaigns from your approved modules and co-authors design system code | AI drafts emails from a brief inside approved templates, plus agent access via MCP |
Collaboration | Pinned comments, revision-tied approvals, and org-wide export gating | Real-time co-editing, commenting, and approval workflows |
Sending | No sending. One-click export to your ESP in its native personalization syntax | No sending. One-way HTML push into your ESP or MAP |
A design system you own in code vs. governed modules configured for you
This is the core difference between the two platforms. Stensul governs through locked modules and admin settings, set up with Stensul's team. Better Email gives you the design system as code: your developers write modules in HTML and Liquid, define every setting marketers get, and validations enforce the rest - no services engagement required to change anything.
Only in Better Email
HTML + Liquid modules
Your design system is real code you control, not builder settings
Global Script & shared inputs
Define brand tokens once. Every module stays in sync
Typed inputs with validations
Regex rules, must-change defaults, image dimensions, and more
You design the editor
Marketers get exactly the inputs you expose. Nothing else
Betty writes module code
AI co-authors HTML, Liquid, and settings with your developers
Built-in image pipeline
Crops, badges, and rounded corners baked into modules automatically
Email builder and editor
Marketers get a no-code, drag-and-drop experience in both platforms - neither expects them to touch HTML. The difference is what sits underneath. Stensul's builder runs on governed modules configured in the platform. Better Email's editor is generated from your design system, so every option marketers see is one your team designed.
An editor your team designed
Because the editor is generated from your Email Design System:
- • Every input marketers see is one your team chose to expose
- • Validations block off-brand content while people work
- • Content zones control which modules can go where
- • Publish a new module once and every campaign builder gets it
Full rendering control
Because your Email Design System is real HTML you control:
- • Guaranteed correct rendering across all email clients
- • Rounded buttons that actually work in Outlook
- • Custom layouts that pre-configured modules can't express
Collaboration and approval flows
Both platforms handle review well: real-time co-editing, comments in context, and native approval workflows. Better Email adds precision underneath - approvals are tied to a specific revision, and one org setting stops any campaign from reaching your ESP before it is approved.
Betty vs. Stensul AI
Stensul has leaned into AI: drafts from a brief inside approved templates, and agent access through its governance layer. Betty's difference is depth on both sides of the platform. She builds campaigns from your approved modules, and she co-authors module code with your developers - because in Better Email, there is real code to write.
< 2 minutes
Time to first production-ready draft with Betty AI
Integrations and sync
Neither Better Email nor Stensul sends emails. Both push finished work into the platform that does. Stensul covers a long list of enterprise marketing platforms. Better Email focuses on one-click export in your ESP's native personalization syntax, and builds custom connectors on request.
Neither platform sends emails
Better Email and Stensul both focus on creation. Your ESP or marketing automation platform handles sending, whether that is Salesforce Marketing Cloud, Braze, Klaviyo, HubSpot, or something else.
Who is each platform for?
Both govern email creation at scale. The choice comes down to who owns the foundation.
Better Email is for you if...
- You want your design system in code: HTML and Liquid your team fully controls
- You want to build and iterate modules yourself, without a services engagement
- You want to design the editor experience with custom settings and validations
- You want AI that builds campaigns from approved modules and writes module code
- You need export in your ESP's native personalization syntax, or a custom connector
- You manage multiple brands or organisations with separate design systems
Stensul is for you if...
- You want a fully no-code setup where the vendor helps configure your modules
- You need landing pages in the same platform as your emails
- You want built-in spam checks alongside your client previews
Want to see Better Email in action?
Book a demo and see how Better Email and Betty AI can build your Email Design System and produce campaigns in under 2 minutes.