AI Invoice and Payment Reminder Writer for Small Business

Get paid without the awkward chasing.

The Invoicing agent drafts the invoice from your prices the day the job ends, then writes each reminder for you to send, firm and friendly.

Add Invoicing & collections to my plan See your free preview

From $15/mo · $99/mo workspace required

harbor-oak.brainztem.com/invoices Live

Invoice · INV-2207Overdue 6 days

Kiawah primary bath · Delivery milestone

Kiawah Partners LLCDue Sep 24Net 15

Vanity, 72", rift white oak$4,200

Medicine cabinets, pair$1,300

Delivery milestone (30%)$1,650

Amount due$1,650

Reminder, drafted

Hi Morgan, a quick note that the delivery-milestone invoice for the primary bath is now six days past due. Here's the link to pay by card or ACH.

Approve reminderEdit

Waits for your yes

Collections

Milestone billing: deposit, drawings, delivery, final
Reminder cadence: day 3, day 7, call at day 10
Tess handles the call

Activity

Sent Sep 9
Reminder 1 sent Sep 27
Reminder 2 drafted

See it work

The invoice, then the reminders.

The invoice is drafted the day the job ends. If it goes past due, a polite reminder is written, then a firmer one, each waiting in your outbox for you to send.

An illustration. The names and figures are examples.

Invoicing agent

Polite first, then firmer.

Day 0

InvoiceSEP 12

DueSEP 26

ReminderSEP 29

FirmerOCT 6

PaidOCT 8

Invoice 1042Ready in your outbox

To: Priya Natarajan · from your terms: net 14

Built-ins, as quoted Q-1042$9,160.00

DueSep 26

Late fee after 10 days your terms1.5% / mo

ReminderDraft · for you to send

To: Priya Natarajan · Re: Invoice 1042

Hi Priya, a quick note that invoice 1042 was due on Friday. Here is the link to pay. Thanks so much!

Second reminderDraft · for you to send

To: Priya Natarajan · Re: Invoice 1042

Hi Priya, invoice 1042 is now ten days past due. Could you let me know when we can expect payment? Our late fee terms are on the invoice.

Invoice 1042On your board · Done

To: Priya Natarajan

Built-ins, as quoted Q-1042$9,160.00

PaidOct 8

PAID

FriendlyToneFirm

In your toneNothing sends until you do

What the Invoicing & collections agent does

A cabinetmaker brushes sawdust from her forearm at dusk beside a finished white-oak cabinet door, her workshop lit by a single lamp. — End of the jobThe job is done. The invoice, and the polite reminder, are drafted for you to send.Illustrative image

Drafts the invoice

From your prices and the job details, as a PDF or spreadsheet.

Writes the reminders

Polite, then firmer, in your tone, ready in your outbox.

Keeps track

Each invoice and reminder lands on your board.

Your terms

Due dates, late fees and payment details from your brain.

Pricing

Monthly, on top of the $99 Brainztem Workspace. Change level any month.

Getting started

$15/mo

~25 invoices and reminders per month

For a business just getting going, or trying one agent for the first time.

Steady

$19/mo

~60 invoices and reminders per month

Fits most small businesses: a full inbox and a steady flow of customers and jobs.

Busy

$29/mo

~180 invoices and reminders per month

For a busy shop or a growing team with high volume in every channel.

Setup: nothing to set up.

Questions

Does it collect payments?

Not yet. It drafts invoices and reminders for you to send; payment links and accounting sync are on the way.

What do I need to set up?

Nothing. It works from your knowledge brain as soon as your workspace is live.

How much does it cost?

Invoicing & collections starts at $15 a month on top of the $99 Brainztem Workspace, and $19 a month for a typical small business.

Does anything go out without my approval?

No. Every outgoing email, post, quote, invoice and call script waits in your review queue until you approve it.

Works well with

Bookkeeping

Upload a bank or card export; every transaction sorted and anything odd flagged.

Quoting

Turns a customer request into an itemized quote from the prices in your brain.