Email the Record, Text the Nudge, and Put the Amount in the First Line

Pick the channel by what the message has to do

If the message is about a price, a deposit, a due date, or a change to the job, send it by email. Email gives you a timestamped record you can forward, search, and point to later. A text is faster to be seen and easier to ignore. A phone call is the best at actually getting a reply, and the worst at proving what was agreed.

So the working rule is simple. The email carries the facts. The text or call is a pointer: "Sent you the invoice by email, it's due Friday." Never let a text be the only place a price or a date lives, because when a client says "I never agreed to that," a screenshot from your personal phone is a weak position.

If you are sending the quote itself, the layout that gets read is covered in putting the price in the email body and the PDF as the record.

Write the message so it works without being opened

Most clients see your message as a lock-screen preview or an inbox line, not the full thing. If the amount and the date are in the first line, the message has done its job even if they never tap it. If the first line is "Hope you're well!", it has not.

Every money message needs five things, in this order:

1. Who you are, by business name, not just your first name.
2. What it is: invoice 1042, deposit for the March 8 shoot.
3. How much, as a number with a dollar sign.
4. When, as a printed date. "Friday, November 14" beats "in 30 days" (see why relative due dates cause late payment).
5. One action, usually a single payment link. Two links means the client stops to choose.

Here is a real email subject and opening for a photographer, Sam at Lumen Studio, billing a client named Dana:

Subject: Lumen Studio invoice 1042 - $850 due Fri Nov 14

Hi Dana, your wedding gallery is delivered and invoice 1042 for $850 is attached. It's due Friday, November 14. You can pay by card here: [link]. The PDF is attached for your records.

And the text that points to it, three days before the due date:

Hi Dana, invoice 1042 for $850 (wedding photos) is due Fri Nov 14. Pay here: https://pay.example.com/1042 Reply if anything looks off. -Sam, Lumen Studio

That text is 153 characters. Note what it does not do: no apology, no "just checking in," no emoji. "Reply if anything looks off" matters more than it looks, because a client who disputes a line item quietly will usually just not pay. Inviting the objection gets it out in the open while it is still easy to fix.

A sensible order for one invoice is: email on the day you send it, a short text three days before the due date, a second email the day after it is missed, and a phone call at seven days overdue, followed by an email recapping the call.

One automatic dash can turn one text into three

A standard SMS holds 160 characters, but only if every character is in the basic GSM-7 set: plain letters, numbers, and ordinary punctuation. Add a single character outside that set, such as an emoji, a curly apostrophe, or an en dash, and the whole message switches to a different encoding that holds 70 characters per segment, or 67 when the message is split into parts.

We ran Sam's 153-character text through that math. With a plain hyphen before "Sam," it is one segment. Change that hyphen to an en dash, which iPhones and many Android keyboards insert automatically when you type two hyphens, and the same 153 characters become three segments. Add a thumbs-up emoji and it is still three.

Why you should care: business texting services generally bill per segment, not per message, so one stray character triples the cost of every reminder in an automated sequence. On older phones and some carriers, a split message can also arrive in pieces or out of order. If you text from your own phone one at a time, the cost does not matter, but the habit of plain characters still keeps the message tidy.

The fix is boring: write your reminder templates in a plain-text editor, use straight quotes and hyphens, and leave emoji out of anything that asks for money.

The rules are lighter than most people assume, with two exceptions

What is not true: you do not need an unsubscribe link on an invoice email. The FTC treats invoices, receipts, and messages about an existing transaction as "transactional or relationship" content, which is exempt from most of CAN-SPAM. The line you must not cross is the subject line: it cannot be misleading, so do not dress a promotion up as an invoice.

Also not quite true: federal debt-collector rules (the FDCPA) mostly cover third-party collection agencies, not a business chasing its own invoices. But some states go further. California's Rosenthal Act applies to original creditors collecting consumer debts, which means a photographer billing a private client in California is covered. The practical upshot is the same everywhere: no threats, no calling at odd hours, no telling the client's family or employer about the debt.

The two exceptions where the rules do bite are texting. Under the TCPA, automated texts need the client's prior consent, so put a checkbox for it on your client intake form along with who is paying. And if you send texts from a software tool rather than your own phone, US carriers require the sending number to be registered under 10DLC, which most tools walk you through but which can take days to approve.

On tools: if most of your client contact happens by text, a field-service app with built-in SMS, such as Jobber or Housecall Pro, is the better fit. Fynl sends quotes, invoices, and reminders from your own connected Gmail so the record sits in your Sent folder and on the client's file, but it does not send SMS or make calls yet, so texts would still come from your phone.

Questions people also ask

Sources

• FTC: CAN-SPAM Act Compliance Guide for Business
• Twilio: What is the SMS character limit?
• FTC: Fair Debt Collection Practices Act
• FCC: Stop Unwanted Robocalls and Texts (TCPA)