An AI email assistant that helps you write better emails, craft subject lines that get opened, and know exactly when to hit send.
Most email tools save you keystrokes. Ephpha saves you opens. Tell it what the email needs to do and it writes it, sharpens a draft you already have, scores your subject line, and tells you the right moment to send so it doesn't get buried.
| Tool | What you get |
|---|---|
| Write | Describe the goal, pick a type (follow-up, cold outreach, meeting request, thank you, reminder, custom) and get a polished draft in seconds |
| Improve | Paste a draft and get a tighter, clearer rewrite |
| Analyze | A score for your subject line, what's working, what isn't, and 3 stronger alternatives |
| When To Send | A specific day and time window for the recipient's role and industry, with the reasoning and what to avoid |
All four tools also live in the Ephpha Chrome extension, in a browser side panel.
- React + Vite + Tailwind CSS for the web app
- OpenAI (
gpt-4o-mini) behind Vercel serverless functions - Resend for signups
- Deployed on Vercel
src/ web app
api/ serverless endpoints: generate, improve, analyze, whentosend, subscribe
ephpha-extension/ Chrome side-panel extension
git clone https://github.com/Hixly/ephpha.git
cd ephpha
npm install
vercel dev # runs the app and the /api functions togetherSet OPENAI_API_KEY (and RESEND_API_KEY for signups) in .env.local. npm run dev also works for the UI alone.