❓ Problem

Your inbox is the last genuinely free-for-all resource on the internet. Anyone with your address gets equal access, whether it's a life-changing intro or a bot farm in Lagos. Microsoft's own product telemetry, pulled straight from Microsoft 365 usage rather than a survey, puts the average knowledge worker at 117 emails a day. Executives and founders, the exact people fielding the most cold pitches, clear 150 to 200+ a day, according to the Radicati Group.

Zoom out and the maths gets worse. Roughly 392.5 billion emails are sent and received globally every single day in 2026, and close to half of all email traffic, around 188 billion messages a day, is spam. Of what actually survives the spam filter and lands in a real inbox, only 12% contains anything requiring action. The other 88% is noise the recipient still has to triage by hand.

AI has made this dramatically worse in the last two years, not better. Writing a personalised, well-researched cold email used to take genuine effort. Now it takes a prompt. The cost of producing a plausible, targeted pitch has collapsed towards zero, so the volume of outreach is only going one way. Meanwhile the cost of receiving one has stayed exactly where it's always been: also zero. That asymmetry is the whole problem. Senders pay nothing to try their luck, so everyone tries their luck, and the handful of messages that genuinely matter drown in the flood.

✅ Solution

A pay-to-reach layer that sits in front of your inbox and prices access for anyone outside your contacts.

• Set your price. A symbolic 1 cent is enough to filter out bots and mass senders who can't justify paying at scale. A serious $20 to $50 signals "I will only entertain pitches from people willing to put money behind them," the kind of filter a VC, an exec or a busy creator actually wants.
• Route mail through the gateway. Either point your MX record at the service directly, or install a lighter-touch Gmail/Outlook add-on that intercepts unknown senders before they hit your primary inbox, similar in spirit to how a spam filter already works today.
• Contacts skip the toll entirely. Anyone already in your address book, or anyone you've replied to before, is automatically waved through. The toll only ever applies to genuine strangers.
• Refund on reply. If you reply within a set window (say, 14 days), the sender's payment is automatically refunded via Stripe. The net effect: a wanted message costs the sender nothing, and only messages that get ignored actually generate revenue. That single mechanic is what turns this from "pay to spam me" into "put your money where your pitch is."

The wedge is narrow: give busy, high-inbound people one lever to reprice their own attention. The platform underneath, contact-graph management, tiered pricing, refund logic and payout rails, expands naturally into a broader "priced attention" layer across email, DMs and beyond.

📊 Key Numbers

Market size

• Email itself isn't the constraint, 4.7 billion people worldwide use it, but this product only matters to people whose inbox is genuinely a liability: founders, investors, executives, journalists, recruiters and creators with real inbound volume.
• LinkedIn alone counts over a billion members, and a meaningful slice of them, investors, biz dev leads, execs, sit in the "gets pitched constantly" bucket. Call it a conservative 5 to 10 million people globally who would seriously consider pricing their own inbox.
• The sender-side of cold outreach (Instantly, Smartlead, Apollo, Reachinbox and friends) is already a multi-hundred-million-dollar tooling market. Nobody has built the equivalent product for the receiving end, despite the pain being just as real and arguably more concentrated among people who can actually pay for relief.

ARR potential

• Bottom-up: 50,000 paying "gatekeepers" (VCs, execs, creators, journalists) on a $15/mo Pro plan is $9M in subscription ARR alone.