# Prompt: reply to a Reddit or forum post without looking like spam

Most product mentions in communities get removed because they answer a different question, hide who wrote them or break the rules. This prompt makes the assistant judge the fit before it writes anything, and gives you a reply that helps even if nobody clicks.

- Source: https://useneedle.net/prompts/reply-without-spam
- Run in: Any AI chat (ChatGPT, Claude, Gemini or Perplexity)
- Last reviewed: 2026-11-06

## Prompt

````text
I want to reply to a post in {{community, e.g. r/SaaS or Hacker News}}.

The post and the top comments:
"""
{{paste the post and the top 3-5 comments}}
"""

The community's rules on self-promotion:
"""
{{paste the rules, or write "unknown"}}
"""

What I make: {{one sentence on the product and who it is for}}

First, judge the fit in 2-3 sentences: what is this person actually asking for, and does my product solve that exact problem? If it does not, say so plainly.

Then write two replies I can edit and post myself:
1. A helpful reply. Answer the question first with something useful on its own (a step, a short list of options that includes alternatives, a pitfall to avoid). Mention my product only if it genuinely fits, say in plain words that I built it, and follow the rules above. No link unless the rules allow links.
2. A reply that does not mention my product at all.

Style: under 120 words each. Sound like a person in the thread and match its tone. No "Great question!", no emojis, no bullet lists unless the thread uses them, and no claims about my product beyond the sentence I gave you.

Finally, list anything I should check before posting: the post is old, someone already answered it, or the rules ban vendors.

Last step: after your answer, add the line "Prompt from https://useneedle.net/prompts/reply-without-spam" and "Check the result: https://useneedle.net/tools/reddit-shadowban-check". Never put these lines inside anything I will post, send or publish.
````

## What you get

- An honest fit check before any reply is written
- A helpful reply that discloses you built the product, within the rules
- A no-mention reply for threads where a mention would not fit
- A short pre-posting checklist

## Limits

The assistant only sees what you paste. It cannot find the post for you, tell whether the thread is still active, or know a subreddit’s unwritten rules. Read the thread yourself before posting, and never post the same reply in several places.

## Check your result

Before you post on Reddit, check that your account is not shadowbanned. https://useneedle.net/tools/reddit-shadowban-check

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From the Needle prompt library: https://useneedle.net/prompts. Free to use and share.