Comparison between sending invoices by e-mail and via the Peppol network
Peppol is no longer written as an acronym — it is a global network for the secure, structured exchange of e-invoices. So how does it actually compare to e-mail?
E-mail: simple but limited
E-mail is still widely used because it is easy. You generate a PDF, attach it and send it.
Advantages
- No onboarding, no technical setup
- Works with any supplier or customer
- Flexible attachments — PDF, Excel, XML
- Immediate and familiar
Limitations
- Manual processing or OCR required
- Higher error rate — missing fields, wrong data
- No validation before the invoice arrives
- No delivery confirmation, no traceability
- Status of an invoice remains unknown
One clarification. E-mail is a transmission channel, not a format. An XRechnung sent as an attachment is a fully compliant e-invoice. The difference to Peppol is not legality — it is validation, delivery confirmation and traceability. What is no longer sufficient is the plain PDF: under Directive 2014/55/EU it is not an e-invoice, because it carries no structured data.
Peppol: built for automation and compliance
Peppol is a network for structured document exchange. Invoices travel between systems in standardised formats such as Peppol BIS Billing 3.0, through certified access points. You are not sending a file — you are sending validated data.
Advantages
- Fully structured data — no OCR
- Validation before delivery, not after
- Noticeably fewer rejections
- Secure transmission with confirmation of receipt
- Built around EN 16931
- End-to-end automation becomes possible
Limitations
- Onboarding and integration required
- Less freedom in choosing formats
- One-off setup effort at the start
Peppol is not a delivery method. It is infrastructure for digital invoicing.
Where Peppol clearly wins
The decisive difference is not the format. It is process reliability and automation.
With e-mail
You send a document. The recipient has to interpret it.
With Peppol
You send structured data. The system processes it automatically.
Direct comparison
| Aspect | Peppol | |
|---|---|---|
| Data format | PDF or unstructured attachment | Structured XML |
| Processing | Manual or via OCR | Fully automated |
| Validation | After receipt | Before delivery |
| Error rate | Higher | Lower |
| Compliance | Depends on the attached format | EN 16931 by design |
| Traceability | None | Confirmed at every hop |
| Scalability | Limited | High |
Why companies are moving away from e-mail
E-mail reaches its limits wherever these conditions apply.
- Large invoice volumes have to be processed
- Compliance is mandatory rather than optional
- Data accuracy is business-critical
- Processes are meant to run without manual intervention
This is why many organisations now accept e-mail only as a fallback — or phase it out entirely.
Where things stand today
Most companies operate a mixed setup.
For smaller partners and exceptions
Peppol
For structured, compliant processes
The direction of travel is unambiguous: structured networks are becoming the standard.
Conclusion
E-mail is easy, but limited. Peppol takes effort, and delivers efficiency, accuracy and compliance in return. Where the goal is automation, scalability and regulatory readiness, Peppol stops being an option and becomes the logical next step.
How Invoice-Portal supports both
You do not have to choose. Both channels run side by side in one system.
- Receive invoices by e-mail
- Connect to the Peppol network as a certified access point
- Process structured and unstructured formats alike
- Meet the requirements of different countries
Moving on from e-mail invoicing? We will guide the transition to Peppol.
