Documentation
How My Card Inventory Works
Overview
A full tracker for a physical collection — with email as one way to fill it.
My Card Inventory is a complete tracker for a physical card collection: what you own, what each card cost, where it's stored, and what you make when you sell. It's built around real cost basis — each card carries its share of the order's shipping, tax and fees — so profit is what's actually left, not sale price minus sticker price.
You fill it however suits you. Add cards by hand, import a spreadsheet, or let it read your purchase emails for you. The email import is the fastest way in and the feature people talk about, but it's one feature — the app is just as complete if you never forward a single receipt.
It's web-first and privacy-first. We never ask for your email password, never see your mailbox, and store the minimum needed — the only emails we ever read are the ones you choose to forward.
Add cards your way
By hand, from a spreadsheet, or automatically from email.
Not everything arrives as an email, and nothing has to. There are three ways in, and you can mix them freely:
- By hand — add a card for a show pickup, a trade, or an older purchase. Every field a parsed card has, a manual card has too, so a hand-entered collection is exactly as complete.
- From a spreadsheet — import a CSV or an export from another tool; the columns are matched for you and you can fix anything before it lands.
- Automatically from email — forward a receipt (or set Gmail to forward them for you) and the cards are read out of it. See the next section.
Automatic import from email
How forwarding turns receipts into cards with real cost basis.
Forward an order or sale email to the private address in your account, and we read the cards out of it — the player, set, year, grade, price, fees and date. An order's shipping and fees are split across the cards in it, so each one carries its true cost basis, not just its sticker price.
You can forward by hand, or set up a Gmail filter so matching emails (say, anything from eBay) forward themselves — the in-app guide gives you the exact filter to paste. Sales work the same way: forward a “you sold it” email and we match it to the card you own, record the price and fees, and move it to realized profit.
It works across eBay, Fanatics Collect, CollX, COMC and more; the Supported platforms page shows how much each marketplace's emails actually carry.
Tip · Your forwarding address is a credential — anyone who has it can add to your inventory. You can rotate it any time, which switches the old one off immediately.
Confirming what enters
The import queue: nothing is added without your say-so.
Whether it came from an email or an import, parsed cards land in a queue rather than straight into your inventory. You approve or discard each one — the parser suggests, you decide. It never marks a card owned or sold on its own.
Duplicates from re-sent order emails are merged, and repeat copies of the same card stack as quantity. Approve a whole order at once or card by card; anything the matcher isn't sure about is left for you rather than guessed.
Cost basis & profit
How the true cost of each card is worked out.
Cost basis is what a card actually cost you: its item price plus its share of the order's shipping, tax and fees, plus any grading fee. An order's shipping and fees are split across the cards in it, so a $100 card in a $12-shipping order carries its slice, not the sticker price alone.
When you log a sale, the sale price minus the selling fees and shipping becomes the net, and net minus cost basis is the realized profit. That's the number the portfolio and the share graphics show.
Storage & locations
Boxes, binders and slots — know where every card physically lives.
Storage mirrors how you actually keep cards. Create containers (a box, a binder, a bin, a safe), then file cards into them, optionally down to a slot — Row 3, slot 12; Page 4, pocket 2. Filing is optional: a card with no location just shows as unfiled.
Search your storage to find a card when it's time to pack one — the location travels with it. Sell a card and it comes off the shelf automatically, but remembers where it was, so reversing a sale puts it back.
Tip · The home page shows how many cards are “not put away”, so nothing quietly goes missing.
Search & the assistant
Find any card, jump to any page, or ask a question.
The search bar at the top of the page (or ⌘K / Ctrl-K, or “/”) is universal: type a card name, player, set or number to jump straight to that card; type a page name to go there; or turn anything into a question for the assistant.
The assistant answers questions about your own collection — “what's my most valuable card”, “how much have I spent”, “what's my realized profit”. It reads only what's in your inventory and doesn't give financial or tax advice.
Logging sales
Single sales, lot sales, marking sold, and undoing.
A sale can be recorded a few ways: forward a “you sold it” email and we match it to the card you own; open a card and mark it sold with the price and fees; or log a lot when several cards sold together as one order.
A lot sale is treated as the single transaction it was — one buyer, one shipping charge, one commission split across the cards — so the fees stay attached to all of it. Every sale asks you to confirm before it closes a card out, and any sale can be undone, which returns the cards to inventory in their old slots.
Expenses
Grading, boxes, breaks and running costs — and what counts toward profit.
The Expenses tab tracks money that isn't a single card with its own cost basis: grading fees, sealed boxes, break entries, supplies, shipping, subscriptions. It's split into sections so each total means something on its own.
Boxes and lots can record what they sold for, so a box bought to flip shows a profit rather than reading as a pure cost — and you can log how many you bought and sell them off one at a time, with the remaining count shown.
On the Total tab, a switch per category decides what counts toward your card profit-and-loss. Switching a category off leaves it recorded, it just stops moving the number — so overhead like a subscription doesn't muddy how the cards are doing.
Grading
Submissions, fees, status, and how grading cost flows into a card.
Track a grading submission as a group of cards that have left your collection to be graded: the grader, service level, submission number, and the shipping cost. Enter a fee per card, and the postage is allocated across them.
A card's grading fee (its own fee plus its share of the postage) becomes part of its cost basis — a card that cost $100 and $25 to grade cost $125. You can edit a card's grading fee from a popup in its drawer, and set the grade it came back as right on the submission.
Analytics & portfolio
What you own, what it cost, and how it's moving.
Analytics is the portfolio view: total invested, realized profit and loss, expenses, and a breakdown of what you hold. The Expenses total shown here is the same number the Expenses tab computes — one calculation, so the two can't disagree.
List to eBay
Turn a card you own into an eBay listing without retyping.
Connect your eBay account once, then build a listing from a card you already own — the title, condition, grade and price are carried over from the card. You review everything in a preview before it goes live; nothing is published until you confirm.
Trading-card conditions and their required descriptors (grader, grade, cert number for graded cards) are handled for you, so the listing goes up valid the first time.
Plans & limits
Classic, Pro and Pro+ — what each includes.
Classic is free and keeps your whole collection: unlimited manual entry, storage, cost basis and profit, sales tracking, spreadsheet import and export, and a handful of free receipt reads so you can see the automatic part work.
Pro and Pro+ add automatic receipt reading each month, forwarding from more email accounts, more assistant questions, and listing to eBay. See the Pricing page for current numbers; there's a free trial on the monthly plans.
Your data & privacy
Export, delete, and how your information is handled.
Your collection can be exported to a spreadsheet at any time and deleted in full whenever you want — it's your data, with no lock-in. Each user's data is isolated, we store the minimum necessary, and we never share the content of your email or use it to train anything.
Invites & sharing
Referrals and showcasing your collection.
Invite other collectors: they get a longer free trial and you get a free month when they stay. Optionally, opt in to a showcase to share cards or a collection publicly — off by default, with no prices or storage details shown.