Build e-invoicing that fits your document flow.
Document types, validation rules, approval steps, credit notes, and cancellations differ from one business to the next. Describe yours and Evonx builds the application around your e-invoicing provider's API instead of forcing your process into a fixed screen.
The e-document chain
From issuing a document to archiving it
E-invoicing software does more than render a file. It has to know which customer is registered for which channel, pick the right document scenario, surface failures early, and keep an archive you can answer questions from years later.
Document types and scenarios
Model standard invoices, credit notes, corrections, exemptions, withholding, and export documents according to your own product and tax rules.
Provider and network integration
Connect to the service provider or network you already work with for transmission, status polling, and inbound responses through their API.
Validation and approval
Check customer registration, tax identifiers, and routing addresses before sending, and require an approval step where the amount or counterparty warrants it.
Rejections and corrections
Keep rejected, cancelled, and errored documents in their own queue with the error code, retry count, and who resolved it recorded against each one.
Delivery notes and shipments
Tie shipment, carrier, and delivery data into electronic delivery notes and match them back to the invoice they belong to.
Archive and reporting
Keep documents searchable by customer, period, amount, and status, and generate the periodic summaries your finance team and auditors ask for.
Rollout path
Move the integration forward under control
Map your document scenarios
List the document types you issue, when corrections and cancellations happen, and who signs off before a document leaves the building.
Validate in the test environment
Connect to your provider's test environment and run real examples through issuing, responses, and failure cases before anything goes out.
Go live and watch the queue
Once the required registrations and credentials are in place, switch to production and monitor the sending queue and error rate continuously.
Portal, provider screen, or custom
Three ways teams issue e-invoices
Government portals and provider screens handle single documents well. They start to hurt when volume grows, when your approval rules are specific, or when the data has to come from and go back to your own systems.
Different volumes, different needs
Volume changes the process, not just the numbers
A business issuing 50 invoices a month and an e-commerce operation producing 500 documents a day do not need the same software. Bulk sending, queue management, automatic retries, and reconciliation all grow in importance with volume.
Build your e-invoicing flow- Bulk document generation from marketplace and store orders
- Withholding, exemption, and export scenarios
- Per-branch and per-dealer issuing permissions
- Electronic delivery notes matched to shipments
- Periodic document reconciliation and control lists
- Cross-border invoicing across multiple entities
Related solutions
Connect e-invoicing to the rest of the books
Electronic documents are not an island. They matter once they flow into receivables, inventory, and the ledger.
Invoicing software builder
Quotes, invoices, payments, and dunning shaped around your billing model.
ExploreAccounts receivable software builder
Balances, ageing, credit limits, statements, and collections in one place.
ExploreBookkeeping software builder
Create the day-to-day bookkeeping system your clients or your team actually work in.
ExploreFrequently asked questions
Building e-invoicing software with Evonx
Is Evonx an e-invoicing service provider?+
No. Evonx is a software development platform, not an accredited e-invoicing or clearance provider. Documents are transmitted through the provider or network you already work with. Evonx builds the application, controls, and workflow layer around those services.
How does it handle country-specific rules?+
The rules that apply to you—document formats, mandatory fields, clearance or reporting steps—are implemented as part of your application and validated against your provider's test environment. Because requirements change by country and over time, your provider and your advisors remain the authority on what is required.
Can it be added to our existing invoicing system?+
If your current system exposes an API or accessible data, the e-document flow can be built as a separate application and connected to it. Where there is no such access, building the invoicing and e-document flow together on Evonx usually creates less friction.
What happens to rejected documents?+
Transmission states are held in a dedicated queue with the error code, description, retry count, and responsible user. Rejected or undelivered documents stay visible instead of getting lost, which makes period-end reconciliation far easier.
How long are documents kept?+
Retention is a rule you define, driven by the requirements in your jurisdiction. The archive keeps documents searchable for that period, and export flows let you hand over a complete set when an audit asks for it.
Your documents, your rules
Shape e-invoicing around how your business issues documents.
Describe your scenarios. Evonx builds the application.
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