Show HN: ReplyFast – AI replies to your emails instantly, in your own style

1 skyzouw 1 8/4/2025, 5:39:42 PM
I built https://www.replyfast.net/, a lightweight AI tool that answers emails for you — in your tone, instantly, with one click.

Why? I was wasting too much time replying to emails — especially cold outreach, follow-ups, or scheduling replies. ChatGPT helped a bit, but I had to paste the email, prompt it properly, reword the result, and then clean it up.

I wanted something that just worked — fast and clean — without connecting my inbox or over-engineering anything.

How it works: • Paste the email you received • Select the tone (friendly, neutral, formal…) • Click “ReplyFast” → get a ready-to-send reply in seconds • Copy/paste it into your email client

No signup. No email integration. Just focused, fast replies.

Who it’s for: • Indie hackers, freelancers, startup founders • Anyone tired of typing the same replies over and over • People who want quick responses that actually sound like them

Would love feedback: • Is this something you’d actually use? • What would make it more trustworthy or useful? • Any features I should add or remove?

Thanks in advance — here’s the link: → https://www.replyfast.net/

Comments (1)

vouaobrasil · 2h ago
If our world is one where people are writing so many "mindless" emails to other real, live people because that's the way things get done, then I think there's something wrong with the world and an automatic tool won't make things better.