A payment reminder text should name your business in the first words, state the amount and due date, and contain one clear action such as a short payment link — ideally within one SMS segment. Keep the details for email and use a text to make sure the reminder is seen.
SMS payment reminders
Before the due date
On the due date
A few days overdue
Second reminder
Final reminder
Recurring payment
WhatsApp payment reminders
WhatsApp allows slightly longer, friendlier messages. Business messages sent through the WhatsApp Business Platform usually need an approved template and the customer's opt-in.
Upcoming payment
Due today
Overdue
Final notice
Keep SMS short — character limits matter
One SMS segment holds 160 characters when the message uses only the basic GSM character set. Emojis and many accented letters — including Turkish letters such as ş, ğ and ı — switch the message to Unicode, where a segment holds only 70 characters. Longer messages are split into several segments, and each segment is usually billed separately. Shorten the text or link if you can.
Personalising text messages
- Start with your business name so the message is recognised before it is opened.
- Use the customer's first name and one reference they recognise (invoice number or month).
- Use a short link that opens your payment page directly.
- Add a phone number only on later reminders, when a conversation may be needed.
- Avoid emojis in SMS if you want to stay within one segment; they are fine on WhatsApp.
Timing and consent
- Send during business hours in your customer's time zone; never late at night.
- Only text customers who expect messages from you and have given you their number for this purpose. Follow the messaging rules in your country, including any opt-out requirements.
- Don't text disputed payments or customers who asked you to stop.
- One text per reminder step is enough — combine it with an email for the details.
Send them automatically
RemindCash can send SMS and WhatsApp reminders with prepaid credits once those channels are enabled for your country, alongside email reminders included in your plan. See automated payment reminders.