MentionFox
Foxhole · Now in beta

Find companies your competitors can't see yet

Foxhole spots bootstrapped companies entering enterprise scale before they hit Crunchbase. Then it writes the outreach for you.

P
Plausible
Bootstrapped

Privacy-first analytics. Two founders, profitable since year one. Hiring patterns shifting toward enterprise sales motion.

Signal: SOC2 controller hire posted

G
Ghost
Bootstrapped

Non-profit publishing platform. Open-source flagship. Commit cadence doubled over the last six weeks.

Signal: engineering acceleration

B
Bannerbear
Bootstrapped

Image and video generation API. Indie-built. Quietly added RevOps + customer success roles in the last 30 days.

Signal: operational scaling

Sourcing isn't the problem. Conversion is.

Specter and Harmonic give you 100 leads. The bottleneck is what happens after.

1–3%
Average reply rate from cold VC outreach
Salesforge State of Cold Email 2025
18%
Reply rate with advanced context personalization
Salesforge State of Cold Email 2025
5%
Proportion of senders who actually personalize at scale
Mailshake 2025

Specter and Harmonic give you 100 leads. Foxhole gives you 3 — with the three-sentence opening that proves you read their work.

What Foxhole sees that others miss

Four signal classes that surface companies before they appear in any private database.

Engineering acceleration

Commit cadence doubling three to six weeks before fundraise announcements. The pattern shows up in public repos long before any wire hits.

Operational scaling without VC

Hiring a Controller plus RevOps plus an SOC2 lead — while still bootstrapped. The signature of a company preparing to handle enterprise contracts on its own balance sheet.

Founder maker history

Serial bootstrapped builders shipping their fourth product, not their first. The track record predicts which lean teams will actually scale.

Cross-platform pain signals

Emerging categories surfaced from public conversations on forums, GitHub issues, and product communities — before the companies that solve them are formed.

How it works

Three steps from blank page to a real outbound message.

1

Subscribe to your thesis

Describe the kind of company you want to back, the geography, the founder archetype, and the stage. Foxhole maps it to public signal classes.

90-second demo video
2

Daily feed, ranked by signal

Companies matching your thesis surface every morning, ranked by signal strength. Each card explains why it appeared today and what changed in the last week.

Feed screenshot
3

Swipe to compose

Tinder-style triage. Pick a hook, pick a proof point, pick an offer. Foxhole drafts the opener; you send it from your own email.

Composer screenshot

Who Foxhole is for

Built for three buyer types that share one problem: too many leads, not enough hours to actually open one.

Seed and Series A VCs

Find founders before they pitch. Get a three-sentence opener that proves you read their last commit, not their landing page.

Family offices and solo GPs

Proprietary deal flow without a five-person research team. The signal does the legwork; you focus on the conversation.

PE roll-up funds

Bootstrapped companies entering operational scaling are the ideal acquisition targets. Foxhole finds them while they're still off-radar.

Pricing

Foxhole is part of MentionFox. Live pricing is on the main pricing page.

Foxhole is available on Agency and Enterprise tiers. See /pricing for current pricing.

View pricing

Month-to-month on Agency. Annual contracts available on Enterprise.

What early users are saying

Names withheld at the request of the funds quoted. We won't publish a real name without explicit permission.

“The signal-to-noise ratio actually works. I open the digest in two minutes and act on it.” — Anonymous, Seed VC
“I was paying $30K a year for a competing tool. Replaced 80% of it with Foxhole.” — Anonymous, Emerging GP

We're new. We're showing you exactly what we found. You decide if it's worth it.

Request access

Foxhole is invite-only during beta. Verified institutional investors only.

Apply for Foxhole beta access

We'll respond within 48 hours.

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Helps us match your beta priority to fit.

FAQ

The honest answers to the questions every GP asks.

Is this a Harmonic competitor?

No. Foxhole pairs with sourcing tools you already use. We focus on the conversion context Harmonic doesn't provide — the three-sentence opening that proves you read the founder's work.

What's the data source?

Public signals across GitHub, hiring platforms, ProductHunt, Acquire.com, regional directories. Never private databases. Everything we surface is publicly verifiable.

How is this different from Specter?

Specter ranks all companies by growth signals. Foxhole specifically surfaces bootstrapped companies entering enterprise scale — the wedge no VC sourcing tool emphasizes.

Can I cancel anytime?

Yes. Month-to-month on Agency tier. Annual contracts available on Enterprise tier.

Does Foxhole auto-send emails?

No. Foxhole drafts the opener; you review and send from your own email account. Your relationship with the founder stays yours.

How fast do you respond to access requests?

Within 48 hours. Beta is invite-only; we manually review every application to keep signal quality high.