Show up in the right conversations.
Without being that guy.

ZeroCold watches Bluesky, GitHub, HackerNews and the communities where your customers actually hang out — and drafts a real reply you can approve in one click.

Start free See a demo reply
No bulk DMs No engagement-bait Every reply is human-approved
Inbox · Score 92
Bluesky
m
@maya.bsky.social
2m

anyone using something to actually keep track of all the AI tool subs i keep signing up for? bills are getting wild.

4· 12 likes
Draft replyyour voice

yeah this is exactly why i built keepmysubs — pulls every recurring charge from gmail/your bank into one view, flags the duplicates. free tier covers most people.

3 GitHub issues queued·1 HN thread
How it works

Three steps. Then you mostly forget about it.

01

Watch.

Connect Bluesky, GitHub, and the communities you care about. Tell ZeroCold what your product is and which keywords matter.

02

Draft.

When someone posts something your product genuinely helps with, ZeroCold writes a reply in your voice — citing your knowledge base, not making things up.

03

Approve.

You see the post and the draft side-by-side. One click sends it. No approval, no post. Ever.

Why ZeroCold is different

Not a growth-hack tool. Not a scheduler. Something else.

Feature
Growth hackers
Buffer / Hypefury
ZeroCold
Targets real conversations
Reads context before posting
Your voice, not a template
Human approves every send
Won’t get you shadowbanned
Platforms

The places people actually ask for help.

We start where the conversations are real. No bot-saturated networks, no pay-to-play feeds.

Bluesky
Firehose-filtered keyword search
GitHub
Issues + discussions in repos you watch
HackerNews
Show HN, Ask HN, story comments
Mastodon
Federated keyword + hashtag search
Discourse
Any public Discourse forum
Indie Hackers
Product-led threads
soon
Lemmy
Federated communities
soon
Dev.to
Posts + comments
soon
ProductHunt
Launch-day comments
soon
RSS
Any feed you give it
soon
LinkedIn
Research only — never auto-post
research

Need a platform that isn’t here? Request it.

Sample reply

What ZeroCold actually puts in front of you.

A real Bluesky post (lightly anonymised) and the draft ZeroCold wrote against a knowledge base for a subscription tracker.

Score 88 · Bluesky · keyword: subscriptions
Bluesky
j
@jules.bsky.social
posted 7 minutes ago

ok i just realized i'm paying for FOUR different ai writing tools. two of them i haven't opened in months. is there literally any decent way to track recurring stuff without manually combing through statements

11 replies34 likes5 reposts
Draft · grounded in your knowledge base~38s ago

this is exactly the problem keepmysubs solves — connect your gmail and bank, it pulls every recurring charge into one view and flags the duplicates and the ones you haven't opened recently. free tier covers most people's setup.

Pricing

Simple. Cheaper than the time you’re wasting on it.

Free

Try ZeroCold without a card.

$0forever
  • 1 workspace
  • 10 approved replies / month
  • HackerNews only
  • Web inbox approval
Start free
Most founders pick this

Solo

Built for one founder running their own outreach.

$19/ month
  • Unlimited replies
  • All live platforms
  • Slack approval channel
  • Bring-your-own knowledge base
  • Email support
Start free trial

Team

For small marketing teams sharing an inbox.

$49/ month
  • Everything in Solo
  • 5 seats
  • Shared inbox
  • Analytics & reporting
  • Priority support
Talk to us
FAQ

The questions everyone asks first.

Is this spam?
No. Spam is sending the same untargeted message to a list. ZeroCold only surfaces posts where someone is asking for help with a problem your product solves, drafts a reply that addresses *their* situation, and never sends without a human approving it. If you wouldn’t reply to that post yourself, you shouldn’t approve it.
Will I get my account banned?
You shouldn’t — because you’re the one approving every reply, and ZeroCold won’t let you carpet-bomb a community. We rate-limit per platform, enforce a max promo ratio, and skip threads where you’ve already replied. If a platform isn’t safe to automate at all (X, LinkedIn), we don’t.
Does it post automatically?
Never. Every draft requires a human tap — in the web inbox, in Slack, or in the Telegram channel if you wire one up. We are deliberately not building auto-send.
Which platforms work today?
Bluesky, GitHub (issues + discussions), HackerNews, Mastodon, and Discourse forums are live. Indie Hackers, Lemmy, Dev.to, ProductHunt, RSS, and LinkedIn (research only, no posting) are on the roadmap.
Can I see a sample reply before I sign up?
Yes — scroll up to "What ZeroCold actually puts in front of you." That’s a real Bluesky post and the reply ZeroCold drafted against a sample knowledge base.
What about LinkedIn / X / Reddit?
X and Reddit are intentionally off — both networks are aggressive about bot detection and the only safe answer is "don’t automate." LinkedIn is on the roadmap as research-only: we’ll surface relevant posts, but you’ll always reply by hand.
How does pricing work?
Free plan is free forever, capped at 10 approved replies per month on HackerNews only. Solo is $19/mo flat — unlimited replies, all live platforms. Team is $49/mo for up to 5 seats with shared inbox and analytics. No per-reply pricing, no surprise overage bills.
Can I bring my own Slack?
Yes. Each workspace can either use the built-in Slack app or paste a token, signing secret, channel ID, and App ID from your own Slack app. Setup guide is in the dashboard once you sign in.

Start free. The first ten replies are on us.

No card. No demo call. Sign in, point ZeroCold at your product, see what it surfaces in the next hour.

Start free