Create reminders and payment notices with ease

The invoicing software for Swiss start-ups, the self-employed and SMEs

Start for free

Creating reminders made easy

With 21.AbaNinja from Swiss21, you can create professional payment reminder templates and payment reminders online for free. Customise your reminders to match your company’s branding and send them either manually or automatically.

Professional template for payment reminders in your company’s branding

Create professional payment reminders and demands for payment in your company’s branding to ensure a consistent image for your customers. We provide text templates for payment reminders and demands for payment in German, French, English and Italian. You can, of course, customise the texts to suit your needs.

Reminder: Invoicing Programme 21.AbaNinja

Send reminders and payment notices automatically

You can customise whether and when you send payment reminders, first reminders and second reminders. For each address, you can specify whether reminders should be sent manually or automatically. The invoice overview gives you a clear overview of your outstanding and reminded invoices at all times.

Reminder levels 21.AbaNinja

Late payment charges

With the Pro subscription, you can charge additional reminder fees either manually or automatically. Each reminder is generated as a separate document in 21.AbaNinja. To keep payment reconciliation as straightforward as possible, reminders use the same QR reference as the original invoice. Incoming payments from customers are thus automatically allocated to both the reminder and the invoice. 

Open items 21.AbaNinja

Why Swiss companies
choose Swiss21

In our success stories, Swiss start-ups, organisations and freelancers show how they successfully integrate Swiss21 into their day-to-day work and benefit from it.

Portrait Tobias Etter Swiss21 Kunde
Tobias Etter
Managing Director of TE Web GmbH

“I particularly recommend Swiss21 to small businesses and start-ups: it’s free to start with, and offers excellent value for money afterwards.”

Read the success story

Portrait Alex Matzer Geschäftsführer StWE & Bewertung Swiss21 Kunde
Alex Matzer
Managing Director, StWE & Valuation

“After nearly thirty years of using Excel and other tools, everything suddenly became simple, practical and seamless. Swiss21 has made my work much easier.”

Portrait Simone Roth Swiss21 Kundin
Simone Zeugin
Owner of Roth Bookbinding

"For me, as a sole trader, Swiss21 is the ideal solution – simple, efficient and tailored precisely to my needs."

Profile: André Sommer, Grötzinger+Rychard AG, Swiss21 client
André Sommer
Member of the Executive Board, Grötzinger+Rychard AG

“49 francs a month for the Pro subscription is hard to beat. What’s more, Swiss21 is backed by Abacus, a renowned company.”

Read the success story

Portrait Veronique Rochat Fotografin
Véronique Rochat
Freelance photographer

“Before Swiss21, I used Word and Excel, which was tedious and time-consuming. Now I can easily send invoices and quotations even when I’m on the move.”

Portrait Jonathan Grimaud Azur SPA Swiss21 Kunde
Jonathan Grimaud
Founder of Azur Spa Détente SA

“Swiss21 is intuitive, user-friendly and offers efficient customer service.”

Read the success story

Portrait Julien Hungerbühler Smartfidu Swiss21 Digital Coach
Julien Hungerbühler
Managing Director of smartfidu.ch

“My clients are very satisfied with Swiss21. It is very important to be able to communicate digitally with your accountancy firm, and Swiss21 provides that link.”

Portrait Maeva Chatelain Swiss21 Kunde
Maéva Chatelain
Founder of sept-et-huit.ch

“Thanks to Swiss21 and recurring invoices, I’m much more efficient. I can quickly see when a customer has viewed and paid an invoice.”

Portrait Stefan Künzi Swiss21 Kunde
Stefan Küenzi
Managing Director of itsmytime.ch

“With Swiss21, we were able to set up our online shop from scratch within a few days, including integration with the SIX Saferpay payment system.”

Portrait Sabrina Grunder
Sabrina Grunder
Administrative Assistant, Grötzinger+Rychard AG

“Now I can enter the wages, process the payroll and know that everything has been calculated correctly. We used to have to check everything several times.”

Portrait Ruedi Gautschi Nudelwerkstatt Swiss21 Kunde
Ruedi Gautschi
Managing Director, Nudelwerkstatt

“Simple, intuitive and scalable – Swiss21 offers truly outstanding value for money!”

Portrait Laurent Chervet Restaurant Bel Air Swiss21 Kunde
Laurent Chervet
Bel-Air Hotel and Restaurant

"21. Using AbaNinja in conjunction with Lightspeed saves us an enormous amount of time."

Portrait Julian Deb Smiti AG Swiss21 Kunde
Julian Deb
Recruiter, smiti AG

“Swiss21 makes it easier for newly established SMEs to get started with the right software, as it brings together all the key functions. Even now, as we’ve grown, we’re still impressed by its fair and reasonable pricing model.”

Portrait Alex Matzer Geschäftsführer StWE & Bewertung Swiss21 Kunde
Alex Matzer
Managing Director, StWE & Valuation

“After nearly thirty years of using Excel and other tools, everything suddenly became simple, practical and seamless. Swiss21 has made my work much easier.”

Manuela Imboden, Naturluft Swiss21 customer
Manuela Imboden
Management, Natur-Luft

"We’re a small company. Swiss21 gives me a clear, straightforward overview. It’s made my bookkeeping a lot easier."

Portrait Daniele Cofano Swiss21 Kunde
Daniele Cofano
Managing Director, Instadebug Sàrl

“With AbaSalary, I can easily calculate my staff’s wages. I find the direct link to AbaNinja particularly handy.”

Portrait Tarek Almagbaly Worksop Swiss21 Kunde
Tarek Almagbaly
Founder of WorkStop

“21. Both AbaNinja and Lightspeed are available in the cloud. This means we don’t need any servers and don’t have to worry about maintenance.”

Portrait Jonathan Grimaud Azur SPA Swiss21 Kunde
Jonathan Grimaud
Founder of Azur Spa Détente SA

"Swiss21 is intuitive, user-friendly and offers efficient customer service."

Portrait von Mitarbeiterin Bäckerei Chez Deriaz Swiss21 Kunde
Chez Deriaz Bakery
female employee

‘A user-friendly tool at an attractive price.’

Portrait von Mitarbeiterin Bäckerei Chez Deriaz Swiss21 Kunde
Chez Deriaz Bakery
female employee

"Thanks to 21.AbaSalary, we can easily process both hourly and monthly wages."

Portrait Laurent Charbonnier Loyco SA Swiss21
Laurent Charbonnier
Head of Innovation, Loyco SA

“As the applications are simple and intuitive, we don’t need to invest much time in training our customers.”

Portrait Joanie Waelti Pictures of India Swiss21 Kundin
Joanie Waelti
President of Pictures of India

"We can create invoices for our charity and send them by email in just a few clicks."

Portrait Joanie Waelti Pictures of India Swiss21 Kundin
Joanie Waelti
President of Pictures of India

“We used to use Microsoft Word, but now we can create invoices for our club with just a few clicks and send them by email.”

Portrait von Antonio de Donatis Swiss21 Kunde
Antonio De Donatis
Managing Director of De Donatis & Partners AG

“Thanks to Swiss21, our business never comes to a standstill. We can sort out the admin in the office, at home or even from the beach.”

Portrait Gianluca Simone Digital Flow Swiss21 Kunde
Gianluca Simone
Owner of Digital Flow

"I am very pleased with my choice and would recommend 21.AbaNinja to any business looking to manage its time efficiently."

We can do more than just reminders

Forget about high software costs and long lead times for implementation. Our cost-effective ERP software, Swiss21, offers a wide range of programmes that are all interconnected. You’ll be up and running in just five minutes!

Rechnungen und Buchhaltung

Invoices and accounting

21.AbaNinja

Lohnbuchhaltung

Payroll

21.AbaSalary

Onlineshop

Online shop

21.Shop

Kassensystem

POS system

21.POS

Kundenverwaltung

Customer management

21.CRM

Spesen und Zeiterfassung

Expenses and time recording

AbaClik

Stempeluhr

Time clock

AbaClock

Dokumente und Freigaben

Documents and releases

DeepBox, DeepSign, DeepMail

FAQ: Reminders

You can either send a reminder individually via the three-dot menu on the outstanding invoice, or you can set up an automated process. You’ll find step-by-step instructions here.

Yes. You can set individual preferences to determine whether payment reminders and the first and second reminders are sent automatically, and from when. You can also specify for each address whether reminders should be sent manually or automatically.

Yes. With 21.AbaNinja, you can customise our reminder templates to match your company’s branding. You can upload your logo and customise colours, fonts and table layouts to suit your preferences. You can also customise the text.

Yes, you can also charge additional late payment fees either manually or automatically. This feature is only available with the Pro subscription. You can find more information about our pricing plans here.

A reminder typically includes the following information:

  • Invoice number
  • Invoice date
  • Outstanding amount
  • New payment deadline
  • Reminder charges
  • Threat of debt collection

In our blog post, you’ll find out how to respond appropriately to late payments, when late payment charges are justified, and how to draft payment reminders professionally. We’ve also provided templates for reminders and payment notices for you to download.

Less admin, more business.

See for yourself and get started with the free Starter subscription. 

  • No expiry date
  • No hidden costs

Start for free

Frau mit Tablet