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Use case · Justice · Law 1/2025

Prove your MASC before you sue

Since Organic Law 1/2025, you must attempt an Alternative Dispute Resolution method before going to court in civil and commercial matters. Send your Confidential Binding Offer with proof of receipt —without disclosing its content— through a certified notification.

Procedural requirement · art. 9 and 17 LO 1/2025
The context

What changed with Law 1/2025

The Justice Efficiency Act introduced MASCs as a mandatory step before litigating in many civil and commercial matters.

The MASC, a procedural requirement

Before filing a lawsuit you must prove that you tried to negotiate a solution through an appropriate means. Without that proof, the lawsuit may be rejected. The Confidential Binding Offer is one of the most widely used MASCs.

Receipt must be proven

The offer must be sent by a means that proves the other party received it. If the legal term passes without acceptance, silence counts as rejection and the judicial route opens. A regular email, on its own, does not prove that receipt.

The key to the procedure

Prove receipt without disclosing the offer

The law protects the confidentiality of the negotiation's content. To admit the lawsuit it is enough to prove the offer was sent and received, not what it said. Notify documents exactly that: the access, with a certain date, keeping the content safe.

  • You prove the offer was received and opened, with date, time and IP.
  • The proof of sending and receipt accompanies the lawsuit.
  • The content of the offer remains confidential (art. 9 and 17).
What is provenThat the offer was sent and received by the other party, with a certain date.
What it enablesIf there is silence within the term, it counts as rejection and opens the judicial route.
What is NOT disclosedThe content of the offer, which is confidential and is provided separately only if the court requires it.
How it works

From the offer to the proof, in four steps

It is done with Safe Stamper Notify, the certified notification service with proof of receipt and reading.

Draft the offer

Prepare your Confidential Binding Offer or the invitation to negotiate the MASC, with an attachment if applicable.

Send it through Notify

Safe Stamper sends it to the other party as a trusted third party, with a link to access the content.

Receipt is certified

Delivery, opening, date, time and access IP are recorded.

Attach the proof

If the term passes without acceptance, you provide the proof of sending and receipt with the lawsuit.

Frequently asked questions

Common questions about MASC and CBO

What is a MASC and why is it mandatory?

An Alternative Dispute Resolution method is an attempt to resolve the conflict without going to court. Since Organic Law 1/2025 it is, in many civil and commercial matters, a procedural requirement: you must try it before suing.

What is the Confidential Binding Offer?

It is one of the most used MASCs: one party proposes a specific solution to the other which, if accepted, is binding. Its content is confidential; for it to count, it must be sent by a means that proves its receipt.

Why isn't a regular email enough?

A regular email does not reliably prove that the other party received and opened it. Notify, as a trusted third party, certifies delivery, opening, date and IP, which is what is needed for the requirement.

Do I have to disclose the content of the offer?

Not to prove the attempt. It is enough to prove the sending and the receipt; the content is confidential and is provided separately only if the court requires it.

What happens if the other party does not respond?

If the legal term passes without acceptance, silence is understood as rejection and the judicial route opens. The proof of receipt shows you met the attempt.

Which Safe Stamper service is used?

Safe Stamper Notify, the certified notification service with proof of receipt and reading. This page explains its specific application to MASCs.

Meet the requirement with solid evidence

Send your Confidential Binding Offer with proof of receipt and keep the certificate for your lawsuit.

Send a certified CBO See Safe Stamper Notify
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