Written by Omead Musa, Consultant & Director
Updated October 2026

How do I send a letter of demand from Square?

  1. Connect Square. Sign in to SydneyCollect with your email, then approve read-only access in Square.
  2. Pick the invoices. Every invoice with something still owing is listed, from every location, with the customer, the days overdue and what's left after any part payments.
  3. Check the letter. Your customer, what's owing, the invoice number and the due date are filled in. Add your bank details once, because Square doesn't share them, and attach the invoice PDF if you'd like it sent too.
  4. Pay and send. $29 per letter. It goes to your customer today.
  5. We watch the invoice. When it's paid in Square, the follow-ups stop and we ask you to confirm.

What do we read from Square?

What we readWhat it's for
InvoicesWhat's still owing, the invoice number and the dates, from every location
CustomersYour customer's name, company, email, mobile and address
Business profileYour business name, and your main location's address
PaymentsWhat's been paid on each invoice, so the letter asks only for what's left and the follow-ups stop

Read only. We can't create, change or delete anything in Square, and we can't take or move money. We keep only the invoices you send letters for, and we never use your Square data to train AI. Sydney Collect is made by Aus Paid Pty Ltd, not by Square. Our privacy policy says how we look after it.

Which customers can you send to?

Customers in NSW, Victoria, Queensland and the ACT. You can be anywhere in Australia: what matters is where your customer is. Invoices to customers in WA, SA, Tasmania or the NT still show in the list, marked as ones we can't send, because we aren't licensed to collect debts there. Our free letter of demand generator lets you send one yourself.

What if I have more than one location?

Every location's invoices are listed together, so one connection covers the whole business.

How do I disconnect?

Open your dashboard, go to Account, and press Disconnect beside your Square business. That ends our access at Square too. Letters already sent carry on, but we won't see payments in Square any more.

Frequently asked questions

No. Connecting is free and there is no subscription. You pay $29 for each letter you send, the same as a letter you type in.
No. We ask Square for read-only access to your invoices, customers, payments and business profile. We can't create, change or delete anything, and we can't take or move money.
Square doesn't give apps the invoice PDF. The letter carries the invoice number, dates and amount, and you can attach the PDF yourself before you send.
When the invoice is paid in Square, the follow-ups stop straight away and we email you to confirm it arrived. Nothing is charged on Square's word alone.
Square doesn't share your bank account details with apps, so the letter can't take them from there. You add them once, and your customer pays you directly.
Customers in NSW, Victoria, Queensland and the ACT. Invoices to customers in WA, SA, Tasmania or the NT show in the list, marked as ones we can't send, because we aren't licensed to collect debts there.