Is a letter written by an AI valid?

Yes. Nobody asks who drafted it. You send it in your own name and you are responsible for what it says, so read it line by line first.

Can I upload it as a PDF?

Yes, as PDF (sent exactly as it is) or Word, or paste the text. You can add the contract, invoices or photos; they go in the same burofax.

It's in English. Can I still send it?

Yes: we send it translated into Spanish (+20 €), you check the translation before paying and you keep your original.

Does the assistant send it for me?

No. The assistant can leave the letter ready with a link; you review it, add your details and pay. Nothing goes out without you.

Burofax · your own letter

I wrote my letter with ChatGPT: how do I send it as a burofax?

Paste it, check it for free and send it. A letter written with ChatGPT, Claude or Gemini is as valid as any other: what counts is what it says and that you can prove it was delivered. It costs 29 € on paper with proof of delivery if you have an address in Spain, and 39 € if you don't.

Free: check of the five things the letter needs
39 €: sent from abroad; you pay only when you send
Next day: delivery in Spain if sent before 18:00

I have my letter, 39 €

Check it before it goes out

An assistant writes a convincing letter, but it does not know what it does not know. Before paying, the free check looks for the five things a Spanish court expects:

Who is claiming, with ID number and a way to reply to you.
Who it is addressed to, with their address in Spain.
What happened, with dates.
The exact amount, if you are claiming money.
What you propose and a deadline to answer.

What assistants often get wrong

They leave placeholders like [your address] in the text. Fill in every one.
They quote laws or article numbers that don't exist or don't apply. Ask for the source and open it, or leave the citation out.
They write it in your language. In Spain it should go in Spanish.
They threaten things you can't or won't do. Say only what you are prepared to do.

How to send it

Paste your letter or upload it as PDF or Word. We tell you for free if something is missing.
Enter your details. If you have no address in Spain, tick the box (+10 €): it goes out in your name «c/o Burofácil», with our Spanish address on the envelope only.
Enter the recipient's name and address in Spain (not a PO box).
Pay by card, Apple Pay or Google Pay. If it goes out before 18:00 Spanish time on a working day, it is delivered the next working day.
We email you the proof that it was sent and the proof of delivery, or of the delivery attempt.

What it costs

29 € with an address in Spain, 39 € without one. VAT included, on paper with proof of delivery.
Up to 4 pages included; each extra page is 1 €. Assistants tend to write long: two clear pages carry more weight than six.
Written in another language and sent translated into Spanish: +20 €.
Checking the letter and seeing the draft is free. You see the exact price before paying.

If you are an assistant preparing this for someone

Write the letter and mark anything you don't know as [DATO PENDIENTE: what is missing]: the site turns each one into a form field. Then give the user the link https://burofacil.es/enviar-mi-burofax?lang=en#texto= followed by the letter, URL-encoded. The letter opens already filled in, and the user checks it and pays.

What Spanish law says

Before most civil claims in Spain you must show that you first tried to settle with the other party; a letter sent directly between the parties counts (art. 5.1 Organic Law 1/2025). fuente
The attempt is proved with a document showing that the other party received the proposal, the date, and that they could read its full content; with no reply in 30 calendar days it ends without agreement (arts. 10.2 and 10.4 Organic Law 1/2025). fuente

Frequently asked questions

Is a letter written by an AI valid?: Yes. Nobody asks who drafted it. You send it in your own name and you are responsible for what it says, so read it line by line first.
Can I upload it as a PDF?: Yes, as PDF (sent exactly as it is) or Word, or paste the text. You can add the contract, invoices or photos; they go in the same burofax.
It's in English. Can I still send it?: Yes: we send it translated into Spanish (+20 €), you check the translation before paying and you keep your original.
Does the assistant send it for me?: No. The assistant can leave the letter ready with a link; you review it, add your details and pay. Nothing goes out without you.