I built EffiMail (
https://your-domain.com) to solve a problem I faced: finding quality email productivity resources in multiple languages.
What it does:
Comprehensive guides on email management, privacy, and productivity
Free tools: template generator, spam checker, subject line analyzer, read-time calculator
Available in 6 languages (EN, ZH, JA, DE, ES, FR)
Mobile-optimized with fast search and categorization
Tech stack:
Next.js 15 with App Router
Static generation for performance
i18n with next-intl
Tailwind CSS for responsive design
MDX for content management
Why I built it:
Most email productivity content is English-only, limiting accessibility for global teams. I wanted to create a comprehensive resource that works across languages and cultures.
The trickiest part was handling MDX content localization while maintaining SEO performance. I ended up with a file-based approach that generates static pages for each locale.
Looking for feedback on:
Performance and mobile UX
Translation quality (used mix of professional and AI translation)
Missing features or content gaps
Technical architecture suggestions
Happy to answer questions about the implementation or discuss email productivity challenges you've faced.