The Evolution of Banking Communications with Registered Email
For decades, registered mail has been the trusted standard for formal communications in the banking sector. However, the traditional model has clear limitations in the face of digital transformation, pressure for lower costs, and stricter regulatory requirements.
It is at this point of balance between operational efficiency, legal compliance, and customer experience that registered email asserts itself as a natural evolution of formal communications in banking.
When the traditional model fails to keep pace with the business
For example, in banking institutions, there are several occasions when it is essential to communicate formally with customers, ensuring proof of delivery and integrity of content and receipt. Common examples include litigation processes, when the bank sends PARI(Action Plan for Default Risk) orPERSI(Extrajudicial Procedure for the Settlement of Default Situations) communications.
Historically, these processes have relied on physical registered mail, resulting in high costs, long delivery times, heavy reliance on manual tasks, and difficulty scaling.
Furthermore, from the end customer's point of view, the experience is also often negative: physical trips to collect mail, absence at the time of delivery, delays in receipt, and lack of visibility regarding the status of communication generate frustration and complaints.
The opportunity to digitize without compromising legal value
In this context, the evolution of digital services now makes it possible to replace traditional registered mail with registered email with legal value, maintaining legal robustness and gaining operational agility. In addition, several institutions in the banking sector already use our registered email solution, with high levels of satisfaction and confidence in the model.
On the other hand, this advance is based on a solid and widely validated legal framework. The European eIDAS regulation establishes the rules for digital trust services throughout the European Union, including electronic registered delivery services and, at its highest level, Qualified Electronic Registered Delivery Services (QERDS). At the national level, this regime is implemented through Decree-Law No. 12/2021, ensuring that these communications have legal value and are accepted as evidence in regulatory and judicial contexts.
In practice, registered email ensures:
- Proof of shipment with date and time;
- Content integrity and immutability;
- Auditable evidence for legal and regulatory purposes;
- Complete traceability of the process.
As a result, delivery is virtually immediate, drastically reducing deadlines, operating costs, and environmental impact. For our banking customers, this combination of legal rigor, speed, and efficiency translates into agility, operational control, and high confidence in adopting this channel for critical communications.
How it works
Operation is simple and integrated with existing systems:
- First, the bank's system automatically identifies when a communication needs to be sent.
- Next, documents and messages are generated using predefined templates.
- The message is then sent via the secure registered email platform.
- The customer receives the email almost immediately.
- In addition, the system records relevant events.
- Finally, a legally valid receipt is generated, which is archived and made available for future reference.
The entire process is automated, reducing manual tasks, errors, and cycle times.
A solution built on cross-functional collaboration
Naturally, the implementation of registered email is a cross-functional project. On the client side, it involves several areas of the organization in a coordinated manner:
- IT, responsible for monitoring technical integration (where applicable) and system security;
- Legal and Compliance, ensuring the legal framework and probative value of communication, as well as regulatory and normative compliance;
- Operations, responsible for controlling the execution, monitoring, and efficiency of processes;
- Business, aligning solution implementation with strategic objectives and customer experience.
This multidisciplinary involvement is a competitive advantage, as it ensures that the solution is technically robust, legally sound, efficient, and strategically aligned. Contisystems' consultative approach ensures alignment between these areas, reducing risks and accelerating adoption.
Preparation that enhances the effectiveness of the solution
The effectiveness of registered email depends on valid addresses and customer authorization to use the channel. Although this is a growing trend among recent subscribers, there may be limitations with older accounts.
In this regard, for organizations that wish to better prepare their databases for the reality of digital communications, Contisystems offers contact certification and validation services with proven efficiency across multiple clients.
Proven results in the field and customer satisfaction
If we consider a specific example from one of our clients in the banking sector, we can share the following metrics:
Average monthly sending of registered emails
%
Savings compared to traditional registered mail
%
Reduced delivery times
In addition to operational and financial gains, these results are directly reflected in the end customer experience. Faster receipt of communications, elimination of paper and physical travel, and digital access to history contribute to consistently high levels of satisfaction.
In this way, the combination of internal efficiency and improved customer experience strengthens trust and reduces friction points at the most sensitive moments.
In this case, Fast, results-oriented implementation
In practice, implementing the registered email solution is quick and simple. Within weeks, the customer can send their first emails in production, immediately benefiting from savings and operational gains.
In addition, Contisystems leads the entire process in a collaborative but autonomous manner, from the analysis and design phase of the solution to technical integration, testing, and commissioning.
Complementary services and continuity mechanisms
Additionally, to ensure maximum levels of effectiveness, operational continuity, and legal compliance, the registered email solution can be complemented with other services that function as fallback mechanisms or communication reinforcement channels.
In this case, when delivery of the registered email fails (full inbox, server unavailable, etc.), it is possible to automatically trigger the sending of the communication by traditional registered mail. This ensures that the process is not blocked and that the legal notification requirement is always met.
At the same time, registered SMS can be used as a complementary channel for alerting end customers, informing them of the existence of relevant communication, increasing the read rate, and reducing the risk of delays or failures in receiving information.
This multichannel approach ensures greater process resilience, improves the customer experience, and gives the bank full control over exceptions, deadlines, and legal evidence, even in scenarios where one of the channels fails or is unavailable.
A natural evolution in banking communications
Modernizing legal communications is not just a technological decision. It is a strategic choice that combines operational efficiency, legal rigor, sustainability, and a more seamless experience for the client.
As a result, more and more banking institutions are following this path, achieving consistent cost reductions, greater operational agility, and high levels of customer satisfaction.
The next step
For many organizations, the best starting point is to understand how recorded email applies to their specific workflows, volumes, and internal requirements.
A demonstration allows you to see how this solution works, how the platform generates legal evidence, and how it integrates with existing systems.
Finally, if you would like to explore this topic in more detail, please contact us to schedule a demonstration and assess the potential of this solution for your organization.
About the author

Andreia Bastos
Marketing and Communication Technique
