OverpayAlertA walk through the whole path: send your invoices in by forwarding or upload, let AI read and check each one, get the alert where your team already works, decide, and export the results to QuickBooks or Xero.
Every new workspace starts on a 7-day Growth trial, with no payment details at signup.
Sign up with an email address and password, then confirm the email. Your workspace is ready to receive invoices.
Use your company name. It becomes part of your forwarding address.
Add the people who review invoices and give each one a role. Starter has 3 seats, Growth 15 and Scale unlimited.
7 days of Growth with 1,000 invoices included. No payment details at signup.
Every workspace gets its own forwarding address. Copy it from the upload panel or from Integrations, then send your invoice mail to it.
invoices+acme-7c1e04b9d2a35f86e0c4@forward.overpayalert.comUnique to your workspace. An admin can replace it at any time.
Drag PDF, PNG or JPEG files into the upload panel, up to 20 at a time and 10 MB each. Uploads and forwarded mail go into the same queue.
On Scale, your systems can send invoices through the REST API with POST /v1/invoices and read alerts back with GET /v1/alerts, using scoped API keys.
Scanned PDF or phone photo, AI reads the whole invoice and turns it into a ledger entry. Nothing to type, nothing to map.
Anything that isn't an invoice gets set aside and doesn't count toward your plan. Every invoice goes through AI data extraction and lands in your invoice ledger, ready for the checks.
Over your monthly allowance, emailed invoices wait as Held and are read as soon as there is room again.
Two checks run on every invoice you send, against everything you sent before. A flag opens a review. Your team closes it.
A duplicate rarely arrives as an exact copy. It comes back with a new number, a slightly different vendor name or a resent PDF. OverpayAlert compares number, vendor, amount and date, allows for near misses, and flags the pair.
Each flag carries one of three confidence levels: hard duplicate, probable or suspect. Open it and the two documents sit side by side.
How duplicate invoice detection works| Field | Original #4523 | Candidate #4487 | Reads as |
|---|---|---|---|
| Vendor | Acme Construction Co. | Acme Construction Co. | Same |
| Invoice number | 4523 | 4487 | Differs |
| Amount | $4,285.00 | $4,285.00 | Same |
| Date | Sep 1, 2026 | Sep 1, 2026 | Same |
When a familiar vendor sends an unfamiliar number, OverpayAlert compares it with what that vendor billed you before. Big jumps get flagged. What counts as big, and how much history it takes, depends on the workspace settings.
The check adjusts for seasonal patterns, and a new vendor gets a baseline period before its prices are compared.
| Example Facilities Vendor | Invoice | Amount | Reads as |
|---|---|---|---|
| June | EF-0601 | $1,200.00 | Prior |
| July | EF-0701 | $1,200.00 | Prior |
| August | EF-0801 | $1,200.00 | Prior |
| September | EF-0901 | $1,500.00 | Current, flagged |
Pick an amount. Any invoice above it that carries no PO number gets a flag. The rule is on every plan.
On Growth and Scale you set the duplicate confidence levels, the price-spike percentage, seasonal adjustment and the new-vendor baseline. Scale adds a duplicate look-back window, a dollar threshold for price spikes and a dual-approval threshold. On Scale, a flag can also show that other companies saw the same pattern.
Connect the tools your team already watches in Integrations. Each alert carries its evidence and a link back to the invoice.
| Channel | What it does | Plans |
|---|---|---|
| Dashboard | Every alert sits in the dashboard with its evidence, and the bell shows what is new. | All plans |
| High and critical alerts go to owners and admins. A daily or weekly digest can go to the people you pick. | All plans | |
| Slack | Posts the alert with the vendor, invoice number, amount and a link back to the dashboard. | 1 channel on Starter, 5 on Growth, unlimited on Scale |
| Microsoft Teams | Posts the same alert to the Teams channel you choose. | Scale |
| Webhooks | Sends alert.created to every active endpoint, and alert.resolved when the alert is closed. | 1 endpoint on Starter, 3 on Growth, 10 on Scale |
Set quiet hours and low and medium alerts wait until they end. Unanswered alerts can escalate after the number of hours you choose.
Open the alert. For a duplicate, the original and the candidate sit side by side. Comment on the invoice and @mention a teammate if you need a second opinion.
Nothing is paid, blocked or rejected on its own. OverpayAlert never pays an invoice. A person on your team makes each call.
On Growth and Scale, reviewed invoices leave as a CSV built for bill import in QuickBooks Online or Xero. You download it and import it yourself.
QuickBooks or Xero. Save it as a template for next time.
A date range and the invoice statuses to include.
One row per invoice, with its total. Invoices missing a number, date or amount are left out.
In QuickBooks Online or Xero, import the file as bills.
BillNoSupplierBillDateDueDateMemoAccountLineDescriptionLineAmountLineTaxCodeLineTaxAmountCurrencyXero gets Xero's own bill import template, column for column. Export only, no live sync. QuickBooks bill CSV import is not available for every US account.
On the Scale plan, a flag can carry one more signal: other companies reported the same vendor pattern. Nobody is named.
CrowdShield is on Scale only and is not part of the trial. On Analytics, a CrowdShield block shows network matches and your duplicate rate against the network average. That average appears only once five or more companies contribute.
No. Vendors keep emailing the address they use today. You forward that mail on, by hand or with one rule in Gmail or Outlook.
Microsoft 365 can block automatic forwarding to outside addresses. An admin can allow it. Until then, forward invoices by hand or upload the files.
They are set aside and do not count toward your plan, and their files are deleted after 7 days. Only PDF, PNG and JPEG attachments are read, never the email text.
No. It reads, checks and alerts. Payments stay in your own process, and a person on your team decides what happens to each flagged invoice.
No. On Growth and Scale you export a CSV built for QuickBooks Online or Xero and import it yourself.
Yes. The 7-day Growth trial includes 1,000 invoices and asks for no payment details. CrowdShield, API and Microsoft Teams are Scale features and are not part of the trial.
Forward a week of invoices and see what gets flagged. Seven days on the Growth plan, no payment details at signup.
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