wtf is email-blueprints?

Email Blueprints is a collection of ready-made HTML email templates published by Mailchimp. The purpose is to give anyone building an email campaign a solid starting point rather than writing HTML from scratch. Each template is structured to work correctly in email clients, which have notoriously inconsistent support for modern web standards. The repository is split into three folders. The first contains modular template patterns, where a single template is built from swappable design blocks that cover common layout needs. The second holds responsive templates that adapt their layout for smaller screens like phones. The third is a set of fixed-width templates that stay the same size regardless of device. The templates include special placeholder syntax that Mailchimp recognizes when you import them into an account. These placeholders let you fill in content like names, subject lines, or product details without editing the HTML directly each time. If you do not use Mailchimp, you can still use the templates by removing those placeholders and sending the HTML through any other email service. One technical note the README flags: when preparing the responsive templates for sending, do not automatically inline the CSS that lives inside media query blocks. Media query styles must stay in the email head section to function correctly on mobile devices. Mailchimp's own tools handle this correctly, but many third-party CSS inliners do not. The templates are released under a Creative Commons Attribution-ShareAlike license, which means you can use and adapt them freely as long as you credit the source and share any modified versions under the same terms.