Reminder Library ยท Business & Work ยท Updated July 2026

Sending the invoice is easy. Day 15 is where the money leaks.

Clients rarely refuse to pay. They deprioritise, and every week you do not chase is a week they will not transfer. Put the chase on a schedule.

First 5 reminders free ยท No app, no signup, no forms

How to set an invoice payment reminder on WhatsApp

To set an invoice payment reminder on WhatsApp, text NagMeLater "Remind me on 20 July at 10am to check if the invoice was paid", or tap a button below to send it in one tap. The bot confirms the schedule and nags you at the right moment. No app, no signup, first 5 reminders free.

Due-date check

Fires the day the invoice falls due.

Message that gets sentRemind me on 20 July at 10am to check if the invoice was paid

Every Friday sweep

A weekly review of all outstanding invoices.

Message that gets sentRemind me every Friday at 11am to chase unpaid invoices

Month-end invoicing

Never start the month without billing the last one.

Message that gets sentRemind me on the 1st of every month at 10am to send out this month's invoices

Why invoices go unpaid past 30 days

Chasing money feels awkward, so it gets postponed

Nobody enjoys writing "gentle reminder" emails. Without a nag, the discomfort wins and the invoice quietly ages past 45, 60, 90 days.

You forgot which invoices are even open

Three clients, seven invoices, two half-payments. By the time you reconcile at month end, the trail has gone cold and so has the leverage.

Their accounts team pays whoever asks

Most companies pay the vendors who follow up. Silence reads as "not urgent", and your invoice sinks to the bottom of their queue.

Getting paid faster, in practice

Follow up before it is due, not after

A friendly "invoice attached again, due Friday" three days before the due date beats any overdue notice. It catches the invoice before it is missed, not after.

Shorter terms get paid sooner

Invoices with 7 or 14 day terms are paid dramatically faster than 30 day terms, largely because they get processed while the work is still fresh in memory.

Track the promise, not just the invoice

When a client says "processing it this week", set that exact reminder: "Remind me on Friday to check Acme's payment promise". Promises with follow-ups get kept.

How NagMeLater handles it

1

You send the text

The button pre-fills it. Plain words, no format to learn, no reminder app to install.

2

It understands the schedule

Date, time and recurrence are parsed from your message and confirmed instantly.

3

The nag arrives on time

Right inside WhatsApp, where you will actually see it. Reply done, snooze it, or edit it any time.

Questions people ask

Can I set a reminder per invoice?

Yes, and you should: "Remind me on 25 July to chase invoice 042 from Acme". Each invoice gets its own nag, and "reminders" lists them all.

What about recurring retainer invoices?

One message covers it forever: "Remind me on the 1st of every month to send the retainer invoice". Monthly recurrence is built in.

Can it remind my bookkeeper instead of me?

Set up a group and text "remind @Bookkeeper on the 1st to raise invoices". The nag goes straight to their WhatsApp.

Does NagMeLater see my invoice amounts?

Only if you type them. Most people write "chase Acme invoice", no amounts, no attachments, just the nudge.

What is the best invoice payment reminder app?

The one you will actually open. Dedicated reminder apps get installed, muted and forgotten; WhatsApp gets opened dozens of times a day. NagMeLater uses that: send "Remind me on 20 July at 10am to check if the invoice was paid" once and the reminder comes to you, no separate app involved.

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Set it in the next ten seconds.

The button opens WhatsApp with "Remind me on 20 July at 10am to check if the invoice was paid" already typed. Send it, and it is handled.