Doncheck family
Chief of staff of the Doncheck family · checkio

Hate asking for money you're owed?
Checkio follows up for you

Rent, fees, money you lent, invoices. Checkio reminds people before it's due, gives a gentle nudge if they forget, and sends a formal letter if it comes to that. No awkward conversations for you.

Join the waitlist How it follows up

Checkio is in closed beta in Korea, inside Rent Check. Tell us your country and we'll let you know when it opens there.

Checkio reminders · sample

3 days before · heads-up[Maple Court 102] Hi Daniel, November rent of $600 is due Nov 5. Thank you, as always.
A day later · forgot?We haven't seen November's rent yet. If it slipped your mind, today is fine.
When it arrives · thank youNovember rent of $600 received. Thank you!

Names and amounts are made up.

Checkio, chief of staff

Checkio, chief of staff of the Doncheck family

The same Checkio works in every Doncheck service. However many services you use, Checkio looks after the money you're owed.

  • In Doncheck, a short morning report on whether the money that came in adds up
  • In Rent Check, a heads-up before rent day, and a polite follow-up when it's late
  • Anywhere, a formal letter when money owed is long overdue

Any money you're owed

Money due on a set date, or money that's already late. Checkio doesn't mind which.

Rent and feesMonthly payments from tenants of homes and shopsBeta
Money you lentFollowing the repayment scheduleBeta
Fixed monthly feesMaintenance, usage and management feesBeta
Invoices and trade creditGoods delivered but not paid forSoon
Freelance and service feesThe job is done, the payment isn'tSoon
Deposits to get backThe lease ended, the deposit didn't come backSoon
Lesson fees and duesMonthly tuition and membership feesSoon
Payouts and commissionsSettlements that didn't arrive on the promised daySoon
Money lent to friendsThe hardest money to bring upSoon

A day of sending a formal letter

If you've done it even once, you know.

Writing itFinding a template, wrestling with legal wording, rewriting. Frustration included.
Getting to the post officeTraffic, parking, fares. Finding time on a weekday is a job in itself.
Taking a numberAnd this many people ahead of you.137
Checking it arrivedTracking number in hand, checking again and again. Time wasted, twice.
With Checkio: 1 minuteThe letter fills itself in from your contract, goes out with one tap, and you hear when it's delivered.

How Checkio follows up

On set days, in the same calm tone. The moment the money arrives, it stops and says thank you.

D-3Heads-upAmount and where to pay, in advance
Due dayIt's todayAlready paid? Ignore this
D+1Forgot?One more gentle nudge
D+3Overdue noticeAmount overdue and any late fee
D+7Formal noticeYou read it, then send it
D+14Formal letterMessenger · registered mail · proof of delivery

Nothing is sent between 9 pm and 8 am. Messages go out in your name. Checkio only delivers them.

Checkio's report cardEvery month the app shows "money received within 7 days of a Checkio reminder", so you can see in numbers whether Checkio is pulling its weight.

Why you don't have to say it yourself

A reminder before the due date alone means fewer late payments. In a 2013 UK trial, people who got a reminder addressed to them by name paid more often.

Keep the relationship

"It wasn't me, it was Checkio." Renewing the lease later feels a lot less awkward.

Keep the record

What was sent and when is kept, ready as evidence if it ever goes to a formal letter or court.

Offer a way forward

Not just pressure. Checkio asks when payment is possible and records the date you agree on.

Three ways to send a formal letter

Writing it is free. You pay only when it's sent. Prices will be announced country by country.

Checkio messageNo address needed: WhatsApp, LINE or text to their phone. What you sent and when it was opened are kept as a record you can use later if there's a dispute.
Registered mail + message Most certainThe post office records what you sent; the message records that it was opened. Two records, the most certain.
Registered mail + proof of deliveryA paper letter, plus a receipt showing who received it and when.

Once it's posted you get the tracking number, and we let you know when it's delivered.

What's proof of delivery? A receipt from the postal service showing when, and who, received your letter. It stops "I never got it." Learn more

Got a message from Checkio?

Checkio sent it on behalf of the person you owe (your landlord, a business, someone who lent you money). Here's how to check it's real.

1. It's about you, and the amount is rightIt includes your name, the property or deal, the amount and the due date.
2. You pay the person you owe, directlyCheckio will never ask you to pay into anyone else's account.
3. The only address is doncheck.todayDon't tap links to any other address. If in doubt, ask the person you owe directly.

Checkio never asks for passwords, verification codes or card numbers, never asks you to install an app, and never reports to credit bureaus.

Questions

What is Checkio?

The "money-owed assistant" shared by the Doncheck family. It reminds people before payments are due, follows up step by step when they're late, and sends a formal letter if needed.

Does Checkio collect the money?

No. Money always goes straight to your account. Checkio is a tool that delivers messages in your name on set days. It never calls or visits anyone.

How are reminders sent?

In the beta, by text from your own phone: Checkio writes it, you send it with one tap. Sending directly by messenger is in the works.

Does a messenger letter count?

What you sent and when it was opened are kept as a record, which can help as evidence if there's a dispute. Rules differ by country, so for the most certainty we recommend a registered letter as well.

How is the other person's contact used?

Only for these reminders, using the contact details you got through your deal or contract. Never for ads, and never shared.

Who runs it?

ALE Corp. in Seoul, Korea, as part of the Doncheck family. Questions are welcome at alefniamc@gmail.com.

Work with us

Wherever money changes hands, experts help. We're looking for people to build the Doncheck family with.

PartnershipsPlatforms, associations and companies to build withContact us
ExpertsA page for accountants, tax advisers and lawyers to work with their clients' records (flat monthly fee)Ask about expert pages
Bring it to your countryLocal partners who want to launch and sell the Doncheck familyBecome a local partner

We never take referral fees for professional work. Expert pages are a flat monthly fee, the same no matter how many clients you have.