Flowis Mailer
for both a simple start and complex processes
Try out e-invoicing in practice and choose the solution that works best for you.
FREE
Start
Voluntary involvement
30 days with no obligation
- Unlimited Receipt of E-Invoices
- Send up to 100 e-invoices
- 1 user
- After 30 days, get Peppol Box for free or with a suitable plan
Price List
Pricing varies based on the volume of e-invoices and the level of automation.
Peppol Box
A quick and easy start for businesses not subject to VAT.
FREE
- Suitable for non-VAT payers
- For receiving e-invoices only
- Approval Workflow
- 1 user + accountant
- Option to upgrade to a higher-tier plan
- Top-Level Security (ISO 27001, SOC 2 Type 2, Penetration Tests)
- Mobile app
- Option to purchase an additional package
Mini
A basic solution for small businesses and sole proprietors.
Coming soon
- Unlimited receipt of e-invoices
- Send up to 100 e-invoices per month
- No need for APIs or integrations
- Approval Workflow
- 5 users + an accountant
- Option to upgrade to a higher-tier plan
- Top-Level Security (ISO 27001, SOC 2 Type 2, Penetration Tests)
- Mobile app
- Option to purchase an additional package
Core
Standard billing integrated with other systems.
Coming soon
- Unlimited receipt of e-invoices
- Send up to 100 e-invoices per month
- APIs and Integrations
- Approval Workflow
- Multi-user access
- Option to upgrade to a higher-tier plan
- Top-Level Security (ISO 27001, SOC 2 Type 2, Penetration Tests)
- Mobile app
- Option to purchase an additional package
Max
For complex processes, including APIs and integrations.
Coming soon
- Unlimited receipt of e-invoices
- Send up to 500 e-invoices per month
- APIs and Integrations
- Approval Workflow
- Multi-user access
- For larger volumes of documents
- Top-Level Security (ISO 27001, SOC 2 Type 2, Penetration Testing)
- Mobile app
- Option to purchase an additional package
Ultra
Customized solutions for businesses with full automation.
Coming soon
- Volume of documents as needed
- Full API connectivity and integrations
- A Customized Approval Process
- OCR Processing of Foreign Invoices
- Multi-user access
- Individualized Approach
- Top-Level Security (ISO 27001, SOC 2 Type 2, Penetration Tests)
- Mobile app
Flowis Mail will get you ready for e-invoicing at
Why Start Volunteering?
Test Real E-Invoices – You’ll get hands-on experience receiving and sending e-invoices, credit memos, and self-billed invoices.
Get Your Processes Ready in Time — Find out if your systems, accounting, and processes are ready for e-invoicing.
No pressure, no fees —you have plenty of time to decide which plan best suits your business.
What is voluntary participation?
Voluntary participation will allow you to try out receiving and sending e-invoices in practice before the mandatory deadline. During this period, you can work with documents in PDF and BIS3 XML formats and also test API integration with your own systems.
How do I sign up through Poštár Flowis?
You can choose Flowis Mail through the Financial Administration portal
Confirm the Terms and Conditions
Flowis will register you with the Peppol network and create an account for you in the app
You’ll gain access to the Digital Mailbox
Choose the right plan for the future
During the free trial period, you can assess your company’s needs and choose the most suitable package.
Frequently Asked Questions
Who is voluntary participation suitable for?
Voluntary participation is suitable for all companies that want to try out e-invoicing in advance, regardless of company size or the volume of e-invoices.
How can I get involved?
Sign up and activate Štart, or contact us if you’d like to discuss your options first. We’ll be happy to walk you through the next steps.
Is the "Start" package really free?
Yes, the Start plan is available for free for 90 days. After this period, you can choose the plan that best suits your business’s needs.
What happens 30 days after activating Štart?
After 30 days, you will choose one of the available plans based on the volume of documents, the number of users, and your integration needs.
Can I change my plan later?
Yes. You can adjust your plan later as your company’s needs or the volume of e-invoices change.
Do you have any more questions?
We’d be happy to help you in choosing the best solution. Just sign up and ask our experts.
Start early, and you'll be ready!
Try the Start package and give yourself time to set up your processes at your own pace.