Electronic communication with proof of opening

Certify the opening of documents sent by email or text messages


With Openum, you send the recipient an email or text message with a link to access its content.

Once the link is opened, you access a web page, and the documents sent by the sender are automatically displayed. Openum certifies the opening of these documents issuing a documentary evidence.


As with all Registered emails or SMS, we know when it is sent to the recipient.


We also certify the moment it is delivered to the destination server, a necessary piece of information to be accepted as strong evidence.


When the user accesses the web page, we certify the opening of the document.

Sending Registered SMS

How does it work?

The recipient receives an email or SMS with the text previously entered on Tools and with a link to a website.

On the website, the recipient views the PDF document(s) with the content you want to report as opened.

First step

Send the email or SMS

Write and send the email or SMS from Tools.

Enter the recipient or recipients, set the texts of the email or SMS, and attach the PDF document (content you want to send).

Second step

Opening of the document

When clicking on the link provided in the email, the link gives access to the document to be opened and read.

The documentary evidence has a digital signature a time stamp and it provides you with the legal validity to bring it in any court or public administration.

Benefits Of Registered Email


Protects the Environment

It prevents the management, the expenses and the impact on the environment that involves the use and abuse of paper.


Legal Value

This electronic notification is the documentary evidence.



Within seconds, your communication will be delivered to the addressee, without having to wait for hours or even days.


The cost is much lower than that of traditional reliable communications.