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TrueDue
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  • Money-back guarantee
  • Stripe checkout
  • For B2B & B2C
  • Your own mailbox
For invoices to business and private customers (B2B & B2C)

Overdue invoice reminder software for your own mailbox

We chase.We read the replies.You decide.

Keep overdue invoices, reminders and replies in one workflow. Payment promises pause follow-ups; disputes go to your team. You choose which emails go automatically and which need approval.

Explore the live demo
TrueDue on a desktop: dashboard of a sample business with 82 open invoices
Sample data

CSV and Excel exports from your accounting system

QuickBooks OnlineQuickBooks DesktopXeroFreshBooksZoho BooksSageNetSuiteWaveBILLCSVExcel

How it works

Four steps. TrueDue does three of them.

Automated collections: payment reminders from your own mailbox. From open invoice to money received, working from the figures in your accounting software. Every screen below is the real application.

  1. Export your open-invoices report from QuickBooks, Xero, FreshBooks or any other system and upload it, or email it to your import address. Each new import updates what is there and never creates duplicates. Lexware Office (Germany) connects directly.

    • QuickBooks · file or email
    • Xero · file or email
    • FreshBooks, Zoho · file or email
    • Lexware Office · direct
    TrueDue import page: upload the open-invoices list, check the columns, TrueDue takes overImport done · 82 open · 1 paid

  2. Every invoice with its balance, due date and days overdue, grouped by customer. You see at a glance who is late, by how much, and what happens next.

    TrueDue invoice list with filters, balance, due date, status and next step29 overdue · $62,365.67

  3. Friendly reminders go out from your own mailbox, automatically or only after you approve them. When a customer replies, TrueDue reads it and sorts it: payment promise, dispute, out of office or “already paid”. A dispute holds reminders for that invoice.

    • Approval
    • Automatic
    TrueDue inbox: how TrueDue reacts to a payment promise, a dispute, an out-of-office note and an unclear replyPayment promise found · reminders wait until the date

  4. When the next import shows the invoice at a zero balance, TrueDue closes it and schedules nothing further. Once a payment shows up in your data, no further reminders go out.

    TrueDue invoice detail: paid according to the import, balance history down to zero, next step: nothing scheduledBalance $0.00 · nothing scheduled

If no fresh data arrives for 48 business hours, sending pauses. Export open invoices and their history as CSV or Excel at any time.

More than the reminders in your accounting software

Your accounting software sends reminders. TrueDue reads the replies and reacts.

QuickBooks, Xero and many other accounting programs can send payment reminders. What the customer writes back, someone on your team still has to read, sort and follow up. TrueDue does that part, working from your accounting data.

Customer writesAccounting software aloneTrueDue
“I’ll pay on Friday.”Without TrueDue: Someone has to note the promise and hold back the next reminder.With TrueDue: Reminders rest until shortly after Friday. Then the next import checks whether the money arrived.
“There’s a problem with the delivery.”Without TrueDue: Someone has to exclude the invoice, or it shows up in the next reminder run.With TrueDue: Collection stops and your team gets the case with the invoice and its history.
“Out of office until Monday.”Without TrueDue: The software does not pick up the note. The next reminder goes out on schedule or has to be held back by hand.With TrueDue: If the note gives a return date, the next reminder waits until after it, then continues on its own.
“We already paid.”Without TrueDue: Someone has to check before the next reminder goes out.With TrueDue: Reminders pause and you get a check task. The invoice only counts as paid after the next import.
An unclear replyWithout TrueDue: Someone has to read it, sort it and remember it.With TrueDue: Nothing goes to this customer until you decide. The reply, invoice and history wait for you.

For comparison: reminders that accounting software sends on a schedule or on demand, as of November 2026. Individual products may differ. All product names are trademarks of their owners; TrueDue is not affiliated with these providers.

What the programs do, according to their own help

Compared against each vendor’s help on invoice reminders, as of November 8, 2026. TrueDue according to its own product description.

ProgramSend reminders on their ownCustomer replies (per the reminders help)
QuickBooks Online[3]Yes. Up to three reminders before or after the due date, for unpaid invoices you have already emailed.Not mentioned there.
Xero[4]Yes. Up to five reminders for invoices marked as sent.Replies go to the email address of the person who turned reminders on.
TrueDueYes. Automatically or only after your approval, from your own mailbox.Yes. Promises, disputes, out-of-office notes and “already paid” are sorted automatically; reminders rest, hold or pause. Anything unclear goes to you.

Dedicated collection tools partly read replies too: Chaser describes on its website that it spots payment promises in replies and drafts an answer that you send yourself.[5]

  1. [3] QuickBooks Online Help: Send invoice reminders automatically or manually (retrieved Nov 8, 2026)
  2. [4] Xero Central: Set up and add invoice reminders (retrieved Nov 8, 2026)
  3. [5] Chaser: AI email generator (retrieved Nov 8, 2026)
Try this workflow in the demo

New

Connect your accounting instead of uploading files.

With Lexware Office, TrueDue fetches open invoices directly. Paid invoices stop the reminders on their own. Set it up once:

  1. 1

    Paste the API key from Lexware Office

  2. 2

    Test the connection

  3. 3

    TrueDue fetches open invoices every three hours, no file needed

What TrueDue takes off your plate

TrueDue does the work that starts after the reminder.

Reads the replies

Every reply that reaches your connected mailbox is read and sorted. Anything unclear comes to you.

Payment promise found

Spots what is paid

Matching against your books ends the reminders as soon as it shows the invoice as paid.

Reminder stopped

Respects disputes

When a customer reports a problem, reminders for that invoice hold until you have sorted it out.

Collection on hold

From your own mailbox

Reminders come from your own address. Replies land where you expect them.

From: [email protected]

You set the pace

Approve every email yourself, or let routine reminders go out automatically.

Approval or automatic

Checked before every send

15 checks before every email. If the data is stale or something is unclear, nothing goes out.

15 checks
View plans

See TrueDue in action

What is overdue, what needs you and what was promised, with the next decisions underneath.

app.truedue.dev/app/today
TrueDue app with sample data: Dashboard
Open the live demo

The real app with sample data: simulate replies and review drafts. No customer emails are sent.

The overview video

TrueDue explained in 36 seconds

Built in, not promised

Four facts, no fine print.

View plans
Reminder draft in TrueDue: sent from your address, invoice and amount from your books
Invoice detail in TrueDue: the payment promise is being watched, balance history from the imports

From: you

Every reminder leaves your own mailbox, in your name.

15

checks before every send

$0

setup fee on every plan

No limit

on users, on every plan

The math

Manual follow-up burns real money.

Drag to your numbers. If it doesn’t pay off, it says so.

Example calculation

You save per month

$8,198

$98,375 per year · 59% less than doing it by hand

Lost to manual work per year
$166,250
TrueDue Core, first year
$67,875

Assumes a 25% reply rate (7 min per reply), 30% of the manual work left over and $95.00/hour. Not a quote.

Pricing

One flat price. Unlimited users.

For business customers only. Prices in USD. No VAT is added for businesses outside the EU. Access starts once your first payment is confirmed.

Start

$500/month

No setup fee. Cancel anytime.

  • Up to 250 active debtor accounts
  • 1 legal entity
  • 1 collections mailbox
  • Unlimited users
  • Standard support
Choose plan

Core

Recommended

$1,500/month

No setup fee. Cancel anytime.

  • Up to 1,000 active debtor accounts
  • 1 legal entity
  • 1 collections mailbox
  • Unlimited users
  • Standard support
Choose plan

Scale

$3,000/month

No setup fee. Cancel anytime.

  • Up to 5,000 active debtor accounts
  • Up to 3 legal entities
  • Up to 3 collections mailboxes
  • Unlimited users
  • Priority support
Choose plan

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More than 5,000 active accounts? Contact us below for a custom quote.

Contact

Talk to us before you decide

Talk to us before you decide

Book a 15-minute video call
Fabian Lorenz, founder of Neithra Technologies

Fabian Lorenz · Founder, Neithra Technologies

Thirteen years in the German police shaped how we work: careful documentation, transparent decisions and discretion with data.

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We usually reply within one business day.