Show HN: ReplyFast – AI replies to your emails instantly, in your own style
I built https://www.replyfast.net/, a lightweight AI tool that answers emails for you — in your tone, instantly, with one click.
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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.
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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.
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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
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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/
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.