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Prompts for the messages freelancers hate sending: the invoice reminder. Three escalating tones — first nudge, second reminder, final notice — so you stay professional without leaving money on the table.
Write a friendly invoice reminder for an overdue invoice. Assume it slipped their mind, mention the invoice number and due date, and offer to resend it. Warm, under 60 words. Invoice: [paste].
Write a firmer invoice reminder for an invoice still unpaid after a first nudge. Restate the amount and due date, ask if there is an issue, and give a payment date to aim for. Professional, under 80 words. Invoice: [paste].
Write a final-notice invoice email. State the amount, how late it is, that this is the last reminder before late fees or next steps, and the payment link. Firm and professional, under 90 words. Invoice: [paste].
Write a message offering a payment plan for an overdue invoice a client is struggling to pay. Acknowledge it, propose two instalment dates, and keep it collaborative. Under 90 words. Invoice: [paste].
Write a short message asking a client to confirm they received an invoice, so you know it did not get lost. Polite, under 40 words. Invoice: [paste].
Write a message adding a late fee to an overdue invoice per the agreed terms. State the original amount, the late fee, and the new total. Professional, under 80 words. Invoice: [paste].
Write a friendly reminder that an invoice is due in a few days. State the amount, the due date, and the payment method. Warm, under 50 words. Invoice: [paste].
Write a short message thanking a client for paying an invoice and confirming it is settled. Professional, two lines.
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Write a friendly reply to this message to a friend. Keep it natural and concise. Keep it to two or three short sentences. Format it as a chat message — no subject line, no sign-off. Do not use any emojis. The message you received: [Paste the message you need to reply to]
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Save this as a custom prompt in the Synapse keyboard and trigger it with one tap inside WhatsApp, Gmail, or any Android app.
Chasing an invoice is easier with a ladder than a single message. A first reminder assumes the invoice was overlooked (it usually was) and stays warm; a second reminder gets firmer and asks if there is an issue; a final notice states the consequences plainly. The prompts above are that ladder, each one escalating in firmness without ever tipping into rudeness — because a rude reminder burns a client you may want to keep.
Timing matters as much as tone. A first reminder a few days after the due date is standard; a second a week later; a final notice after two. Sending all three in the same week reads as panic and rarely improves the outcome.
Sometimes an unpaid invoice means a client in trouble, not a client avoiding you. The payment-plan prompt above is for that case — it keeps the relationship and still gets you paid, just more slowly. It is usually a better outcome than a final notice that ends the working relationship.
For freelancers who bill regularly, save your reminder ladder in the My Prompts library or load it into the Synapse keyboard so a tap on the client's thread writes the right reminder at the right stage, inside WhatsApp or your inbox.
Copying prompts from a browser tab works, but it breaks your flow. The Synapse AI keyboard saves any prompt as a custom shortcut and runs it on selected text inside WhatsApp, Gmail, Upwork, or any Android app — one tap, no copy-pasting back to a website.
Download Synapse FreeStart friendly and assume it slipped their mind — most do. Mention the invoice number and due date and offer to resend it. The first-reminder prompt here is exactly that tone. Escalate to firmer language only after the first nudge is ignored.
After two softer reminders have been ignored, usually around two weeks past the due date. State the amount, how late it is, and what happens next — late fees or escalation. The final-notice prompt above is firm without being rude, which keeps the door open if they pay late.
Yes. Every prompt is plain text with no app-specific syntax, so it pastes into any chat assistant. They are written to give the model a clear tone, goal, and format, which is what makes a prompt reliable across models rather than something tuned to one.
On this page, yes — the generator's My Prompts library saves any prompt to your browser so you can copy it again without rebuilding it. To reuse a prompt inside WhatsApp or Gmail itself, add it as a custom prompt in the Synapse keyboard and trigger it with one tap on selected text.
Yes — free, no sign-up, no account, and no AI call happens on this page. The prompts are static text; you copy them and run them in whichever assistant you already use.