PRACTICAL GUIDES

Start with the task.
Find your next step.

Prepare a VAT list, fix an invoice error or review a domain change. These guides explain the workflow before you create an account.

EU VAT · ENGLISH

Check VAT numbers from a CSV

Prepare columns, review duplicates and understand valid, invalid and inconclusive VIES results. Keep useful records and plan recurring checks.

Read the VAT list guide →
INVOICES · ENGLISH

Fix BR-CO-10

Understand an invoice line-total error with a small example. Correct the total and validate the UBL invoice again.

Read the invoice error guide →
INVOICE API · ENGLISH

Python and Node.js examples

Send a synthetic invoice, handle validation findings and test the client against a local stub before connecting your API key.

Get the client examples →
DOMAIN WATCH · DANSK

Domæneovervågning til bureauer

Se en illustrativ rapport, gennemgå opsætningen og hent en tjekliste til overvågning af kundernes domæner.

Se arbejdsgangen →
MAILOPSÆTNING · DANSK

Ændringer i SPF og DMARC

Dokumentér mailopsætningen, gennemgå ændringer og skeln mellem konkrete fund og usikre resultater.

Læs guiden →
DKIM · DANSK

Find din DKIM-selector

Find selector og signeringsdomæne i en mails header, og brug oplysningerne i dit domænetjek.

Læs guiden →

Ready to try the workflow?

Explore the online tools and compare their allowances before signing up. VAT lists, Domain Watch and other paid products have separate subscriptions.

Explore online tools → Compare current plans