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A modern virtual mailbox that turns incoming business mail into a scanned, routed, and automated workflow.
10,000+ companies served · 50–60 people
The wedge is an old physical workflow made operationally useful: turn business mail into searchable, routed data, then layer automation around it.
Fewer bars = easier, cheaper, or faster for an AI-assisted solo builder. Editorial judgments based on the case details.
Sarah Ahmad and her co-founder Colin built Stable after an earlier remote-work benefits startup failed its COVID stress test. Their prior product could not attract users even when offered free, so they interviewed hundreds of operators and found the business-address and physical-mail problem recurring among office-light companies. They tested demand with a landing page in the Y Combinator community before writing software. Founders requested help urgently, and the first 100 customers were onboarded through Zoom, a Stripe payment link, and a Google Drive folder. Stable partnered with a San Francisco mail operator and manually scanned and uploaded incoming mail. The product now serves more than 10,000 companies, including DoorDash, Realty Income, and GitLab, and Ahmad says it has crossed $10 million in annual recurring revenue. The team is 50–60 people. The business combines physical mail handling with software that opens, scans, routes, and extracts information from documents.
For a business mailbox product, the first customers are easiest to reach where founders already ask how to register a company, change a business address, or handle official mail.
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Data credibility: Founder interview with Sarah Ahmad. She reports more than 10,000 company customers, annual recurring revenue above $10 million, and a 50–60 person team. The transcript does not provide a dashboard, audited statements, exact pricing, or a revenue breakdown. The earlier “first 100” description is presented in the interview introduction; Sarah describes the manual Google Drive, Zoom, and Stripe workflow directly. The ARR figure is her broad “eight figures” statement, not a precise audited value.
Stable’s first revenue arrived through a Stripe checkout link after a founder accepted a manually delivered service. The team put the customer’s address in a Google Doc, onboarded them over Zoom, and promised to upload scans to their Drive when mail arrived.
The compounding loop begins when mail handling becomes dependable enough to remove a recurring administrative chore. A company receives a letter, sees it scanned and routed, and can trust the service with the next one.
A physical operations product has a difficult quiet period: early demand may be real while every order still requires founder attention. Stable’s founders addressed that uncertainty by starting manually and speaking directly with early customers, including Zoom onboarding and hands-on support.
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