{"id":29955,"date":"2025-11-19T00:14:30","date_gmt":"2025-11-18T23:14:30","guid":{"rendered":"https:\/\/www.legalpin.com\/?p=29955"},"modified":"2026-03-04T10:26:54","modified_gmt":"2026-03-04T09:26:54","slug":"gdpr-compliance-send-sensitive-data-safe","status":"publish","type":"post","link":"https:\/\/www.legalpin.com\/en\/blog\/gdpr-compliance-send-sensitive-data-safe\/","title":{"rendered":"How to Comply with GDPR When Sending Sensitive Information by Email or SMS"},"content":{"rendered":"\n

Complying with GDPR<\/strong> when sending sensitive information<\/strong> by email or SMS involves working with communications that require rigor, traceability<\/strong>, and solid evidence of each action performed.<\/p>\n\n\n\n

Data protection<\/strong> ceases to be a formality and becomes a critical element for any organization that handles personal information or documents with evidentiary value, especially in b2b communications<\/strong> environments.<\/p>\n\n\n\n

Today, each shipment must guarantee confidentiality<\/strong>, integrity<\/strong>, authenticity<\/strong>, and reliable content recording.<\/p>\n\n\n\n

Without these guarantees, any internal process that depends on sensitive data becomes vulnerable and generates an unjustified operational risk<\/strong>.<\/p>\n\n\n\n

This introduction marks the starting point to analyze how to reinforce legal security<\/strong>, optimize document management, and build a communications system capable of sustaining regulatory compliance<\/strong> at each step.<\/p>\n\n\n\n

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Why sending sensitive information by email or SMS can generate GDPR non-compliance<\/strong><\/h2>\n\n\n\n

Common risks in digital communications<\/strong><\/h3>\n\n\n\n

Sending critical data<\/strong> by email or SMS without adequate technical and organizational measures can expose the organization to unauthorized access, alterations, or involuntary disclosures.<\/p>\n\n\n\n

For example, sending user credentials<\/strong> by email in plain text was considered by the Spanish Data Protection Agency as inadequate, especially when mechanisms equivalent to online certified mail<\/strong> are not employed.<\/p>\n\n\n\n

It’s also common to lack control in visible email fields (“To:”, “CC:”) when managing multiple recipients, which puts the confidentiality of personal data<\/strong> at risk.<\/p>\n\n\n\n

Additionally, when reliable traceability<\/strong> is not available (who sent, when, what was sent\u2026), the organization remains unprotected against possible claims or inspections, as it cannot demonstrate operational diligence.<\/p>\n\n\n\n

What GDPR considers “sensitive data” and why it matters<\/strong><\/h3>\n\n\n\n

The General Data Protection Regulation (GDPR) classifies as sensitive data that which reveals ethnic origin, political opinions, religious beliefs, genetic data, biometrics, health, or sexual life of a person, as defined when explaining what is GDPR<\/a>.<\/p>\n\n\n\n

Their treatment requires explicit consent<\/strong> or meeting a very precise legal condition, and they are subject to a more rigorous level of protection than standard personal data.<\/p>\n\n\n\n

If this data is sent without adequate encryption<\/strong>, without access control, or without audit records, the organization risks serious sanctions<\/strong>, as the risk to people’s rights is high.<\/p>\n\n\n\n

Real cases of infractions for poor communications management<\/strong><\/h3>\n\n\n\n

One example: a company was sanctioned because it sent personal data<\/strong> from one client to another via SMS due to a technical error; the fine reflected the violation of Article 32 of GDPR<\/strong>.<\/p>\n\n\n\n

Another notable case: a company sent username and password together via email in plain text; the AEPD<\/strong> determined that this method was not appropriate for such content, despite database encryption existing.<\/p>\n\n\n\n

There were also sanctions for lack of valid consent<\/strong> when sending commercial communications by email or mobile, revealing that sending without consent can lead to responsibilities for non-compliance.<\/p>\n\n\n\n

With this in mind, we move on to see how a technology platform<\/strong> can help reinforce these critical fronts and convert risks into operational compliance \u2014 we continue.<\/p>\n\n\n\n

The 7 keys to comply with GDPR when sending sensitive information by email or SMS<\/strong><\/h2>\n\n\n\n

1. Correctly identify which data requires reinforced protection<\/strong><\/h3>\n\n\n\n

We must be clear about what information is considered personal data<\/strong> and which falls into the sensitive data<\/strong> category. Health, background, ideology, biometric data, or advanced financial information require reinforced measures<\/strong> and much stricter control.<\/p>\n\n\n\n

Without this prior classification, any shipment can represent inadequate treatment and generate unnecessary legal risk<\/strong>.<\/p>\n\n\n\n

2. Obtain a valid legal basis for sending sensitive information<\/strong><\/h3>\n\n\n\n

Before sending sensitive documents or messages, we need a solid legal basis<\/strong>, such as explicit consent, contract fulfillment, or vital interest. GDPR<\/strong> requires that this basis can be demonstrated, not just declared.<\/p>\n\n\n\n

The absence of this legitimation converts the shipment into an unauthorized transfer that can lead to relevant sanctions<\/strong>.<\/p>\n\n\n\n

3. Implement encryption and adequate security measures<\/strong><\/h3>\n\n\n\n

Content must travel protected through encryption<\/strong>, secure protocols, and controls that prevent unauthorized access, using solid practices of information encryption<\/strong>.<\/p>\n\n\n\n

It’s not enough to send an email from a trusted provider: GDPR<\/strong> requires security in transit and at rest.<\/p>\n\n\n\n

This is key when we handle critical documents<\/strong>, where integrity and confidentiality must be totally guaranteed.<\/p>\n\n\n\n

4. Verify identity and authentication of recipient before sending<\/strong><\/h3>\n\n\n\n

If we send sensitive information<\/strong> to the wrong recipient, we face a security breach<\/strong>.<\/p>\n\n\n\n

That’s why it’s essential to verify identity, authentication, and contact data before each shipment.<\/p>\n\n\n\n

An error in this phase can expose personal data<\/strong> to third parties and force the company to notify a breach before the competent authority.<\/p>\n\n\n\n

5. Guarantee traceability: who sent what, when, and to whom<\/strong><\/h3>\n\n\n\n

GDPR<\/strong> requires being able to demonstrate that we act with diligence. For this, we need complete traceability<\/strong> of the process, including sending time, content delivered, addresses involved, and delivery status, as required by the data protection law<\/strong> itself.<\/p>\n\n\n\n

Without this evidentiary chain, it’s impossible to prove compliance, which weakens any legal defense before a claim or audit.<\/p>\n\n\n\n

6. Generate legal evidence that proves consent, sending, and reception<\/strong><\/h3>\n\n\n\n

Each communication must be accompanied by verifiable evidence<\/strong> that proves its legitimacy: consent collected, exact content, moment of sending and reception.<\/p>\n\n\n\n

This evidence allows demonstrating that the treatment was secure, authorized, and performed according to regulations, in the same way that happens when one properly understands what a buromail<\/strong> is and its evidentiary function in critical communications.<\/p>\n\n\n\n

7. Establish internal policies and training to avoid human errors<\/strong><\/h3>\n\n\n\n

A large percentage of non-compliance comes from human failures<\/strong>: emails sent to the wrong recipient, wrong attachments, or sensitive information sent without protection.<\/p>\n\n\n\n

Continuous training<\/strong> and clear policies reduce risks and allow teams to work with homogeneous and traceable criteria.<\/p>\n\n\n\n

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\n\n \u2705 What a proof certificate should include\n\n <\/p>\n\n