The set-and-forget Gmail organizer that learns from you.
A multi-tenant SaaS that quietly files receipts, sweeps the noise, and keeps real mail visible, on its own, on a schedule. It learns from how you file your own mail, and it never deletes or sends. Below: the opportunity, the product, what it costs to build, and exactly how we get people subscribing.
Nobody owns this exact lane.
The market splits three ways, and each group misses something a small-business owner needs. The white space is a business-aware organizer that lives in real Gmail, learns continuously, and is provably safe.
Who it is for, in their own words.
Pulled from real posts in r/smallbusiness, r/freelance, and r/productivity. This is the language that becomes the marketing.
The trade-business back office
"We use info@ for pretty much everything. Client communication is the priority and it is getting lost." Filters only work for known senders and break constantly.
The freelancer
"Over 80% of my time is spent emailing, only 20% on actual work." Receipts buried, invoices forgotten, dread on every inbox open.
The overwhelmed prosumer
"I tried filters, autolabels, even a second inbox, and I still feel behind." The important mail (a lead, the kids' school) drowns in commercial noise.
The learning loop is real, and buildable today.
In Gmail, every move you make is a label change. Sortwell watches those changes through Google's push notifications and history API, so when you drag a message to a folder, it learns the pattern. No rules, no training screens.
Rules first, AI only for the tail
Deterministic rules handle the bulk for free. A small, private LLM call breaks ties on the ambiguous minority. A failed call leaves mail in the inbox, never mis-files.
It ignores its own moves
Gmail does not say who made a change, so Sortwell keeps a ledger of its own actions and only learns from what you did. A message you pull back from a folder is the strongest signal of all.
How it is built.
Vercel for the front door, a durable queue for the work, a dedicated worker only when scale demands it. Replay-safe by design.
Web app
Next.js on Vercel, installable as a web app on phone and laptop. One codebase, every device, nothing to publish to an app store.
Connect & learn
Google sign-in, encrypted tokens in a key vault, Pub/Sub push plus history sync to catch every manual move, renewed daily.
Classify safely
Rules plus a zero-retention LLM tie-breaker. Idempotency keys and a self-action ledger make every re-run harmless.
Google verification: cheaper than the myth, and it does not fire until user 101.
What is true
To organize mail you need a Gmail "restricted" scope, which requires a yearly CASA Tier 2 security assessment to serve more than 100 users. An unverified app can serve up to 100 users today for free, behind a one-time warning screen.
What it actually costs
CASA Tier 2 runs roughly $540 to $4,500 per year (not the $15,000+ figure floating around, which is legacy bundled pricing). Timeline is about 4 to 12 weeks. That is the only real compliance cost in the whole plan.
Fat margins, because rules do the heavy lifting.
Only the ambiguous tail hits an LLM, and that call costs a fraction of a cent. Everything else is deterministic and free.
Out-rank and out-refer the incumbents. Do not outspend them.
At a $9 to $19 price, paid ads do not pay back. The bootstrapped winners (SaneBox, Inbox Zero) grew on SEO, referrals, and one good launch. We copy that.
1. Comparison & how-to SEO
The durable engine. "SaneBox alternative," "auto organize Gmail," "file Gmail receipts automatically." Pages that rank and convert, and that AI search cites.
2. Affiliate & referral
Rent audiences at zero cost until they convert. Copy SaneBox: 25 to 30% recurring, plus a give-and-get credit. Fund YouTube reviewers through the same link.
3. One great launch
A single Product Hunt launch. Inbox Zero hit number one and went from a handful of customers to thousands of signups. A credibility and backlink spike, then bank the list.
The first 90 days
Closed paid beta
Pick one wedge (bookkeepers or freelancers). Recruit 10 to 25 hand-picked users, charge them, collect testimonials and the exact words they use. Publish the first three SEO pages. Start building in public.
Content flywheel
One or two SEO pages a week (the competitor-alternative set and top how-tos). Stand up the affiliate program. Grow the launch supporter list past 200. Answer (do not spam) inbox-overload threads.
Launch and amplify
Product Hunt plus Show HN plus newsletter pitches. Capture every visitor's email and the backlinks. Decide the wedge from real retention and willingness-to-pay data, then double down on the one channel showing traction.
From here to scale.
A scheduled organizer is sellable on its own. The real-time learning loop is the wow, and the trickiest engineering, so it is its own phase. Revenue does not wait on it.
Dogfood
The engine and a single-user cloud version already run against a live mailbox. This is the accuracy lab.
Multi-tenant MVP
Sign-in, connect Gmail, encrypted tokens, scheduled triage with the rules-plus-AI classifier, dashboard, one-click undo. A second mailbox runs autonomously end to end.
The learning loop
Pub/Sub watch, history sync, and the self-action ledger. "I dragged it to Marketing, and next run it filed the rest" works on demand.
Closed paid beta
Up to 100 users, billing, reports, a real security page. Prove precision, retention, and willingness-to-pay.
Verify & scale
Pay for CASA, get verified, lift the cap, and pour fuel on the channel that worked.
The name.
"Mailroom" is a great codename, but it is a crowded term: there is an entire "mailroom management software" category competing for that word, which hurts both trademark strength and SEO. The recommendation is to keep Mailroom as the internal codename and launch under a distinct brand. "Sortwell" is the working name used here; it is warm, short, and shows low collision in search, but no name is final until it clears a proper trademark and domain check.
Before committing to any name, run a USPTO trademark search (classes 9 and 42) and a live domain check. These are search-derived signals, not legal clearance.
The honest risks, and how we handle them.
The next step.
Build the multi-tenant MVP on the engine that already works, run a small paid beta for $0 in compliance cost, and let real retention decide when to pay for CASA and scale.
See the landing page