How to Automate Invoice Reminders and Get Paid Faster
Zerentry spends most of its time on the inbound side of the invoice stack: reading the invoices and receipts you receive and turning them into clean, structured data for your books. There is an outbound half to the same stack, and it is the one that decides your cash flow. The invoices you send, and whether they get paid on time.
Getting paid is mostly a follow-up problem. Most invoices are not unpaid because a client refused. They are unpaid because the reminder never went out, or went out once, awkwardly, and then got dropped. The follow-up is also the most automatable part of the whole process.
In this guide
Why invoices sit unpaid
Chasing payment is the task everyone means to do and few do consistently. It sits at the bottom of the list behind actual work, it feels confrontational, and by the time you remember, the invoice is three weeks past due and the conversation is harder than it needed to be.
The pattern that actually collects is boring and consistent: a reminder before the due date, one on the day, and a short escalating sequence after, each a little firmer than the last, stopping the moment the invoice is paid. Done by hand, that is a dozen small decisions per invoice per week. Done by software, it is a sequence you set once.
What automated reminders actually do
An automated reminder tool watches the due date on each invoice and sends messages on a schedule you define. The useful ones share a few traits:
- Escalation. The first message is friendly, a heads up that an invoice is due Friday. Later ones get firmer. The tone ladder handles the awkward part for you.
- Multiple channels. Email is standard. SMS gets opened far faster, which matters once an invoice is past due.
- Auto-stop. When the invoice is marked paid, the sequence ends. Nobody who already paid hears from you again.
- A sync, or none. Some tools plug into your accounting platform and read invoice status automatically. Others run standalone, so you can start without connecting anything.
The tools that run it
| Tool | What it is | Channels | Best for |
|---|---|---|---|
| Nudge | Invoice reminder automation for contractors | SMS + email | Solo operators and trades, SMS-first, from USD 9.99/mo |
| Chaser | Accounts-receivable automation platform | Email and more | Finance teams managing a large receivables book |
| InvoiceSherpa | Reminders, payments and collections in one | Reminders plus a payment portal together | |
| QuickBooks (Payments Agent) | Built-in collections inside QuickBooks | Existing QuickBooks users with modest volume |
Nudge is built specifically for contractors and freelancers who want this handled without a heavy setup. It sends up to nine SMS and email reminders per invoice automatically, starting friendly and escalating until the invoice is paid, and it works standalone or synced with QuickBooks. Plans start at USD 9.99 a month, with a Pro tier at USD 19.99 that adds unlimited customers and higher SMS volume. It runs on the web, iOS and Android, so you can see what is outstanding from a job site. Best for solo operators and small trades who invoice from their phone and want SMS-first chasing.
Chaser is a fuller accounts-receivable platform. It automates reminders and adds relationship-focused features for teams that manage a larger book of receivables. Chaser says its users get paid 16 or more days sooner and save around 15 hours a week on accounts receivable. Best for businesses with a dedicated finance person and a lot of open invoices.
InvoiceSherpa automates reminders, payments and collections together, with a focus on cash flow. Best for businesses that want reminders and a payment portal in the same place.
QuickBooks now chases payments natively through its Payments Agent, part of the AI workflows we covered here. If you already live in QuickBooks and your volume is modest, the built-in reminders may be enough before you add a dedicated tool.
There is no single winner. The right pick depends on how many invoices you send, whether you want SMS, and what you already use for accounting.
Where this fits with your books
Getting paid faster fixes one side of your invoice workflow. The other side is everything coming in, the supplier invoices and receipts you have to record. Chasing your own invoices with a reminder tool and automating the data entry on incoming invoices are the two halves that, together, keep both your cash flow and your books current without manual busywork on either end.
Set the reminders up once. Let the data entry run itself. Spend the reclaimed time on the work that actually bills.
FAQ
How many payment reminders should I send per invoice?
A workable default is one before the due date, one on the day, then two or three escalating reminders spaced a few days apart after it goes past due. Some tools automate up to nine per invoice and stop the moment it is paid.
Are SMS or email reminders better?
Email is fine for the first, polite nudge. SMS is opened far faster and works better once an invoice is actually overdue. The strongest sequences use both.
Does QuickBooks chase overdue invoices automatically?
QuickBooks' Payments Agent handles invoicing and collections natively. For modest volumes that can be enough. Higher volume or SMS-first chasing is where a dedicated reminder tool earns its place.
Will automated reminders annoy my clients?
Handled well, no. An escalating tone and an automatic stop when the invoice is paid mean clients only hear from you while payment is genuinely outstanding, and the early messages stay friendly.
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