Automate your payment reminder letters

When an email is not enough, a paper letter or a burofax makes the difference. Spanish Mailbox prints and posts your payment reminders from Madrid, and your customers' replies come back scanned to your mailbox.

Automate my collections€4 per letter · €20 per parcel · no monthly fee

From software to physical letter

Upload the PDF in the dashboard or send it from your billing system by API. We print, envelope and hand it to Correos the same business day.

Escalation in steps

First reminder as an ordinary letter, second as certified mail and final demand as a burofax with content certification: you choose the channel at each stage.

Replies and proof in one place

Delivery receipts, returns and replies from your debtors arrive at your Madrid address and are scanned, so the whole case file is digital.

Frequently asked questions

Is it legally valid?

A burofax with content certification and delivery receipt is one of the strongest forms of proof in Spain that you made a demand.

Can I send many letters at once?

Yes, in batches from the dashboard or via API.

How much does it cost?

It depends on volume and what you need. Message us on WhatsApp with a rough estimate and we will send you an individual, no-obligation quote.

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Ready to go digital with your mail?

Automate my collections

Need instructions? Contact support on WhatsApp. WhatsApp: +34 617 940 378