Vendor PO confirmation monitor

Every PO gets watched until the vendor confirms it. The wrong ones go straight to your buyer.

A small tool that watches every purchase order your buyers send, reads the vendor's confirmation when it comes back, checks it line by line against your PO, and files both in the right folder. It runs in the background, so there's no new screen for anyone to learn. Everything you see from it arrives as email.

PO outFiledConfirmedCheckedClosed

9:12 AM. A buyer sends a PO to a vendor, with the monitoring inbox copied.

From: Maria Ellison <[email protected]>
To: [email protected]
Cc: [email protected]
Subject: Your Company: Purchase Order #40317

Please see the attached purchase order. Confirm receipt and ship dates when you can.

Thanks,
Maria

PDFPO_40317.pdf · 96 KB

Until now, whether that vendor ever confirmed it, and whether the confirmation matched, came down to somebody finding time to check.

What happens next

Nobody chases it by hand. Here's every step, and every email it sends.

Each step is marked with what does the work. The AI reads what the vendor sends back. Plain software does everything else.

Plain software

It files the PO and starts watching

The moment the PO lands in the monitoring inbox, it reads the PDF your ERP printed: the vendor, and every line with its part number, quantity, price and due date. Your own PO is a layout it already knows, so this part needs no AI.

It builds the vendor's folder if there isn't one yet, saves the PO and the email into it, and starts watching for the vendor's confirmation. If it's a vendor it has never seen, it asks your buyer to set that vendor up once.

Recorded: PO 40317 · Harlan Steel Supply

Lines3

Filed toPurchasing / 2026 Vendor POs / Harlan Steel / 40317

SavedPO PDF and the email

StatusWaiting on the vendor

Plain software

If the vendor goes quiet, it asks them

If no confirmation arrives within 48 working hours, it emails the vendor once, copies your buyer, and attaches the PO again. It counts in your working hours, so a PO sent Friday afternoon doesn't come due over the weekend.

Every PO still waiting stays on your buyer's morning list, with how many days it's been out, until someone closes it.

To: [email protected]
Cc: Maria Ellison
Subject: Acknowledgment requested: Your Company PO #40317

We haven't received an acknowledgment yet for Purchase Order #40317, sent on Oct 6.

Please reply confirming receipt and expected fulfillment, or attach your formal acknowledgment. The original PO is attached. If you've already sent one, please disregard this reminder.

Your Company Purchasing Department

PDFPO_40317.pdf · 96 KB

It reads the vendor's confirmation

Vendors confirm every way there is: a reply with a PDF, a separate email from their own system that never mentions your PO in the subject, a scan, or a one-line "got it." The AI reads whatever comes back the way a person would.

It finds your PO number, lines the vendor's lines up against yours even when they're in a different order or numbered differently, and pulls the quantity, part number, price and promised date for each. It also catches the note at the bottom about a backorder, a partial shipment or a substitution. When the reply is only text, it decides whether that's a plain confirmation or a question your buyer needs to answer.

Read: SO-88213 Order Confirmation.pdf
Vendor: Harlan Steel Supply · your PO 40317

Ln	Part	Qty	Price	Promised
1	HS-4410 flat bar, 1/4 x 2	24	$18.60	Oct 17
2	HS-2207 round bar, 1 in	12	$33.00	Oct 22
3	HS-0931 square tube, 2 in	8	$41.25	Oct 17

Plain software

It checks every line against your PO

Then plain software checks what the AI read, field by field: PO number, line count, quantity, part number, unit price, line totals, promised date and the order total. Price has to match to the penny. Any promised date later than the one on your PO gets flagged, because a later promise moves your schedule. A small freight charge gets noted without raising an alarm.

If the AI isn't sure it read a date or a price right, that line goes to a person even when it matches. The AI never gets the last word. The checks do.

Checked: Confirmation SO-88213 against PO 40317

PO number matches
Line count matches3 of 3
Quantities and part numbers match3 of 3 lines
Lines 1 and 3 match on price and date

Didn't match

Line 2: unit price $31.25 → $33.00
Line 2: promised Oct 17 → Oct 22
Order total $1,151.40 → $1,172.40

Plain software

Anything wrong goes to your buyer right away

When something doesn't match, one email goes straight to the buyer who placed the order, while there's still time to do something about it: what your PO says, what the vendor said, the vendor's PDF, and a one-page report of every field it checked. One click records what they did about it: the vendor was wrong and they handled it, nothing was wrong, or they're still waiting on the vendor.

A note from the vendor and a question from the vendor each get their own email, so the buyer knows at a glance which kind it is.

Subject: Discrepancy on PO 40317: Harlan Steel Supply

There's a discrepancy between our purchase order #40317 and the vendor's acknowledgment.

Field	PO	Ack
Line 2 unit price	31.25	33.00
Line 2 delivery date	Oct 17	Oct 22
Order total	1,151.40	1,172.40

PDFVendor acknowledgment PDFValidation report Review and respond

Subject: Vendor note on PO 40329: Brookfield Fastener

Message from Brookfield Fastener

Vendor noted a partial shipment. Line 2: 150 pcs ship now, balance of 350 ships Oct 30.

Every field matches your PO 40329. This is a heads-up from the vendor. No action needed unless the shipping or timing is a problem.

Confirm or flag an issue

Subject: Vendor question on PO 40334: Kestrel Heat Treat

A vendor reply about PO 40334 couldn't be confirmed as a simple receipt.

Read asA question WhyAsks whether the parts can go out in two lots before confirming the order

If the PO is still waiting on a real acknowledgment, record what happened with one click.

Plain software

Clean ones close and file themselves

When every line matches, nobody gets an email. The PO closes, and the vendor's confirmation, their email and a one-page report of every field it checked are saved in that PO's folder next to your PO. Anyone can open the folder months later and see exactly what the vendor promised.

Folder: Harlan Steel / 40318

Your POPO 40318.pdf

Vendor's confirmationAck PDF, PO 40318.pdf

Their emailSaved

Validation reportEvery field matched

StatusClosed

Plain software

It notices a PO that never reached it

Your PO numbers run in order, so a missing number usually means a PO went out without the monitoring inbox copied, and nothing is watching it. When a number is still missing 24 working hours after the next one shows up, it emails whoever you name.

First it checks whether that number is filed under a vendor you order from on their website, and closes those itself. They're listed in the morning email so someone can say if one looks wrong. And if a buyer's PO email goes out with no PDF on it, that buyer hears about it too.

Subject: Sequence gap: PO 40322 missing

PO #40322 is missing from our sequence.

Prior PO seen#40321 Next PO seen#40323, received 24.5 working hours ago

We never saw PO 40322. The usual cause is that it went out without the monitoring inbox copied. If you did copy us, choose "I did send this: you missed it," because that means we dropped it.

Review and respond

Plain software

Every morning, what happened

The alerts go out the moment something's wrong. The morning email is the summary, one per buyer: every confirmation that came in since yesterday's email and how it checked out, every PO still waiting on a vendor, and anything still open.

If the tool's own reading ever breaks, the email about that confirmation says the fault is the tool's and that it's hitting every confirmation, so a problem on this end never gets mistaken for a bad vendor document.

From: PO confirmations
Subject: Daily digest: 4 confirmed, 3 awaiting acknowledgment, 1 unresolved discrepancy, 1 sequence gap

Unresolved discrepancies (1)

Harlan Steel Supply 40317: line 2 price and date

Confirmed acknowledgments (4)

40318 Harlan Steel Supply, clean
40325 Pinecrest Industrial Supply, clean
40326 Brookfield Fastener, text-only confirmation received
40329 Brookfield Fastener, confirmed after you resolved a flagged issue

Awaiting vendor acknowledgment (3)

40331 Kestrel Heat Treat, 6 days
40334 Kestrel Heat Treat, 2 days
40336 Pinecrest Industrial Supply, 1 day

Sequence gaps (1)

40322, between 40321 and 40323

Closed automatically: website orders

40327, found in the Pinecrest Industrial Supply folder

Where the AI is, and where it isn't

AI reads what the vendor sends back. Plain software does everything else.

Reading each vendor's confirmation, whatever layout they use, scanned copies included
Lining the vendor's lines up against your PO's lines
Picking out a backorder, partial shipment or substitution, with the vendor's own sentence quoted
Telling a plain "got it" reply from a question your buyer needs to answer
Working out which PO a confirmation belongs to when the number isn't where it should be

Plain software

Reading your own PO and filing it, with the folders built for you
Every check against your PO, to the penny and to the day
The reminder to the vendor and the missing-number check
Every alert, every response link and the morning summary

AI is very good at reading a document it has never seen before, and every vendor's confirmation looks different. It isn't exact, so it never gets the last word here. Plain software checks every number it reads against your PO, and when it isn't sure about a date or a price, that line goes to your buyer even if it matches.

The numbers so far

It was built to catch vendor mistakes. It keeps catching internal ones.

Early on, buyers marked a lot of its flags "false alarm." When I went back through them, the tool had been right, and in several of them the fix was to the buyer's own PO: a due date changed and never saved, a price that rounded differently. So I split that answer in two. "The vendor was wrong and I handled it" can't get recorded as the tool being wrong anymore.

12 of 27

vendor confirmations in August that didn't match the PO, found by checking every field on every line.

436

individual field checks on those 27 confirmations: part number, quantity, price, line total and date on every line, plus the vendor's own math.

confirmed by a buyer as real vendor problems in August. That count is a floor.

As of August 2026, from the tool's own records. I tune each of these tools every month on what it got wrong the month before, so the numbers climb over time. The first month is always the worst one.

It had to earn it

Almost every tool I've built broke when it met real paperwork. This one did too.

One vendor's confirmation form has a column for backordered quantity. On this order the column was empty. The AI had been asked whether the confirmation mentioned a backorder, and the column heading does mention one, so the answer came back yes. The buyer got an email saying the vendor had noted a backorder that didn't exist.

Backorder→None on this order Printed on the confirmation: a B/O Qty column, left blank

The question was wrong, so I changed the question. Now it asks what the vendor is reporting about this order. A heading or a blank column doesn't count, and every flag has to come with the vendor's own sentence quoted. Run against that same document, the old question got it wrong three times out of three. The new one gets it right three out of three, and still catches a real backorder.

My first try at that fix went too far. It would have hidden a real note like "Item backordered, no ship date," so that got fixed too, and real vendor phrasings like that one are now part of what it gets tested against every time it changes. That's what making one of these hold looks like: it keeps meeting paperwork it has never seen, and each one makes it harder to fool.

Built once, adapted to yours

This is the baseline. Yours fits your vendors.

Everything above is the tool as it runs today. The parts that do the hard work stay the same. The parts that touch your systems, your vendors and your buyers get fitted to how you already work.

What stays

Watching every PO from the moment it goes out
Reading every confirmation, whatever the vendor sends back
Checking each line to the penny and the day
Alerts to the buyer, clean ones filed on their own, and the morning summary

What gets adapted

Your ERP's PO layout and your folder structure
Which vendors never confirm, and which you order from on their website
How close a price has to be, and how far a date can move
Which buyer hears about which vendor

Distributors

Hundreds of vendors, with confirmations arriving through a portal as often as by email.

Outside processing

Platers and heat treaters confirming a process, a lot and a date instead of a part.

Build to order

Each promised date checked against the job it feeds, so a late promise shows up as a late job.

How it gets set up

It checks quietly before it sends a single alert.

Connect it to a monitoring inbox and your file storage.
Your buyers copy that inbox on every PO, so it works from the same PDF the vendor gets. It never writes to your ERP, and nothing gets replaced.
Set it up around your vendors.
Where each vendor's files go, which vendors never send a confirmation, which ones you order from on their website, how exact a price has to be, and how far a date can move before it counts.
Run it alongside your current process.
It captures, reads, checks and files without emailing anyone, so you can see it get your confirmations right before a single alert goes out.
Turn the alerts on.
Clean confirmations close and file themselves. Anything wrong, missing or unclear goes to a person.

Quoted up front, no hourly billing. I host it and keep it running, and a care plan covers fixes and changes as your vendors change. The code is yours, and I'll transfer it to you at any time.

Linked Operations · AI implementation for manufacturers

If nobody checks every vendor confirmation against the PO, let's talk.

Tell me how POs go out today and what happens when a vendor confirms one. I'll tell you straight whether a tool like this fits, whether something lighter would do, or whether it isn't worth it for you.

Email Jason →

Jason Markham

Nearly 25 years in manufacturing, including a decade running a machine shop. I build these tools myself, and they run every day.

I help manufacturers and distributors implement AI, automate workflows, and reduce errors with small, focused software builds that take over the back office work: the data, the paperwork, the busywork between the systems they already run.

[email protected]