Certified SMS with proof of delivery for businesses
A solution for businesses that need to document SMS notifications, important alerts, complaints, contractual communications, or recurring processes where retaining proof of delivery is essential.
A certified SMS is not a regular SMS
A certified SMS adds a layer of documentation to the communication process. You don't just send a message: you retain organized evidence and a PDF certificate containing the message content, recipient, date, time, and status.
It's useful when a company needs proof of delivery for important communications, without turning every notification into a cumbersome manual process.
Each certified SMS generates a PDF and creates a record
The value lies in the fact that the communication is accompanied by accessible documentation for record-keeping, internal reference, and evidentiary purposes.
Certificate in PDF
It includes the exact message content, the date, the time, the recipient's number, and the "available" status.
Shipping by mail
The certificate is sent to the registered email address for easy storage and reference.
Panel Registration
The record is stored in the client dashboard so that the team can access the documentation whenever needed.
Qualified timestamp
The process can incorporate a qualified time stamp to reinforce the temporal authenticity of the communication.
Registered operator and reliable support
SMS.es operates on a telecommunications infrastructure registered with the CNMC, the National Commission for Markets and Competition. Each certified message may include a qualified timestamp issued by the National Mint and Stamp Factory, in accordance with the service’s technical configuration.
From message to evidence, in a simple process
A visual explanation to help you understand how to send certified SMS messages as part of a business process without turning the page into a legal document.
Prepare the message
Write the message and define the context: complaint, notice, contract change, or notification.
Select recipients
It could be a list, a recurring workflow, or a communication within a business process.
You ship from the platform
The team can operate from SMS.es according to the agreed-upon mode and configuration.
Add it if necessary
To automate communications from CRM, ERP, debt collection, customer service, or in-house software.
You'll receive the PDF
The PDF certificate is generated, sent by email, and made available in the customer dashboard.
When Certified SMS Makes Sense
It's not for just any type of communication. It makes sense when the message may require traceability, monitoring, and documentation.
Fast, direct, and well-documented
Reasons why a company incorporates certified SMS into its communication processes.
Operational agility
It reduces manual tasks when you need to communicate quickly and in a traceable manner.
Family Channel
SMS does not require installing apps or relying on the user to visit a website.
Documentary evidence
It allows you to retain information about the shipping process for tracking or documentation purposes.
It is not a standalone product
Team Management
Designed for companies that need to handle important communications with control, tracking, PDF certificates, and professional standards.
Find a solution for my business →Integration if the process requires it
When there is sufficient volume, recurring business, or proprietary systems, integration may be considered. Technical details should be confirmed with the SMS.es team.
View SMS API →Complements other channels
It can be used alongside bulk SMS, WhatsApp Business, RCS, email, or Telegram, without diverting attention from certified communication.
View Bulk SMS →Choose the right type of SMS
Mass SMS
For promotions, announcements, reminders, and bulk communications.
View Bulk SMS →Certified SMS
For SMS notifications, reliable communication in a practical sense, and proof of delivery associated with the process.
View case →SMS OTP
For verification codes, two-factor authentication, and transaction validation.
View SMS API →For batch processing, not for individual shipments
If your company needs to send certified SMS messages as part of a debt collection, customer service, legal, administrative, or in-house software workflow, we can evaluate an integrated solution.
The goal is to design a stable process: when it is sent, what data is recorded, who receives the PDF, who views it, and how the documentation is stored.
Validity and Evidentiary Value
Certified SMS generates a PDF certificate containing evidence of the communication process and can serve as documentary evidence in Spain and the EU. However, its evidentiary value will depend on the specific case, the documentation generated, and the applicable legal context.
SMS.es does not present this service as an automatic guarantee of a specific outcome in a proceeding, but rather as a business solution for documenting relevant communications with certification, logging, timestamping, and traceability.
Frequently Asked Questions About Certified SMS
What is a certified SMS?
This is an SMS with documentation related to the delivery process. It generates a PDF certificate containing the message content, recipient, date, time, and status, as well as a record for reference, depending on the service type.
What is a certified SMS used for?
For important business communications: claims, debt notices, changes to terms and conditions, contractual communications, administrative notifications, or recurring processes.
What is the difference between a certified SMS and a regular SMS?
A standard SMS is used for communication. A certified SMS is used to document the communication process and provide proof of delivery.
Does a certified text message have legal validity?
The PDF certificate and the qualified time stamp can provide useful documentary evidence in Spain and the EU, but their probative value will depend on the specific case, the documentation generated, and the applicable legal framework.
What does the company receive with each certified SMS?
You will receive a PDF certificate sent to your registered email address and stored in the customer dashboard. The document includes the message content, date, time, recipient number, and "available" status.
Can I integrate certified SMS via an API?
This may be a good option for companies with recurring processes or their own systems. Availability and technical details should be confirmed with SMS.es.
Can I send a one-time certified SMS?
SMS.es is designed for companies and organizations that manage certified communications as part of their business processes. For specific cases, it is best to consult regarding your needs, volume, integration, and availability.
How do I request information or rates?
Contact SMS.es and provide details on your use case, approximate volume, whether you need a platform or API, and your operational requirements.
Find out how to implement certified SMS in your company
Tell us what communications you need to document, and we'll help you find the right solution, complete with a PDF certificate, a timestamp, and document traceability.