Foundation
Responsive HTML emails that work, even on Outlook
What founders should know about Foundation
Foundation for Emails is an open-source framework for quickly building responsive HTML emails using a simplified templating language, a responsive grid, and automatic CSS inlining.
Best for
Responsive HTML emails that work, even on Outlook
Probably not for
Teams that need requirements this record cannot verify yet.
About Foundation
Foundation for Emails is an open-source framework for quickly building responsive HTML emails using a simplified templating language, a responsive grid, and automatic CSS inlining.
Common use cases
- building responsive HTML emails
- transactional emails
- marketing campaigns
- newsletters
Integrations
Sass, Gulp, Handlebars.
Decision criteria
- Team fit and workflow maturity
- Pricing model and free-tier constraints
- Deployment, API, and integration requirements
Verified facts and evidence
| Claim | Value | Source | Confidence |
|---|---|---|---|
| Verification date | 2026-06-30 | StartupToolbox | high |
| Pricing model | open_source | StartupToolbox | medium |
Methodology and freshness
A founder should be able to bookmark this page, compare the record with related options, and act without reopening scattered source tabs.
Use this record to narrow fit, pricing, and integration risk before starting trials.
Last reviewed: Jun 30, 2026
Who should consider Foundation?
Responsive HTML emails that work, even on Outlook
How current is this tool record?
Startup Atlas last checked this record on 2026-06-30.