Supporting government agencies with secure and scalable digital communications

As government agencies continue to modernise the way they communicate with New Zealanders, the need for secure, reliable and scalable digital messaging solutions has never been greater. From engagement and enrolment communications through to operational notifications and critical transactional messaging, public sector organisations require partners they can trust to deliver at scale.

Cumulo9 has built a strong track record supporting government agencies with high-volume digital communications solutions that prioritise security, deliverability, compliance and performance. Working with organisations including the NZ Transport Agency, the New Zealand Electoral Commission, ACC, the Ministry of Education and the Ministry of Social Development, Cumulo9 continues to help government agencies improve digital engagement outcomes while supporting broader digital transformation goals.

In 2025, following a comprehensive RFP process, NZ Transport Agency Waka Kotahi (NZTA) selected Cumulo9 to provide transactional email services through our C9 Transact platform.

Under this agreement, C9 Transact delivers consistently high-volume, business-critical communications.

To meet NZTA’s stringent requirements, Cumulo9 provides a secure, high-availability, dedicated environment for C9 Transact, aligned with public sector security and resilience expectations. NZTA also has access to a dedicated dashboard offering full visibility into system performance and message delivery metrics.

Deliverability, reporting and ongoing optimisation

Beyond platform provision, our team provides specialist consultancy on email deliverability best practice. This service includes:

• Comprehensive message-level reporting for transparency and oversight
• Active monitoring of sender reputation and deliverability signals
• Ongoing optimisation to maintain strong inbox placement and performance

C9 Transact reliably manages significant monthly volumes of transactional emails for NZTA, supporting operational efficiency.

This partnership demonstrates Cumulo9’s capability in delivering secure, reliable, and scalable transactional messaging services for the public sector.

The NZTA engagement highlights Cumulo9’s ability to support agencies where communication reliability and operational resilience are essential. With New Zealanders increasing expectations around digital interactions, agencies require communications platforms that not only perform at scale, but also meet evolving security and compliance requirements.

The Electoral Commission has selected Cumulo9 to support essential digital voter communications in the lead-up to the 2026 General Election.

Under the engagement, Cumulo9 will provide secure, large-scale email and SMS delivery services to support voter enrolment and related correspondence. This includes digital communications for voters on the Māori electoral roll and the general electoral roll, as well as email delivery of EasyVote card information.

The solution is based on Cumulo9’s C9 Transact platform, a New Zealand–designed digital communications service built specifically for high-volume, time-critical, and compliance-driven messaging.

This initiative supports the Electoral Commission’s ongoing move toward greater digital delivery, helping to reduce reliance on physical mail where appropriate, lower printing and postage costs, and improve the speed and accuracy of voter communications. It also represents an important step toward maintaining up-to-date voter contact information and enabling rapid, reliable communication with voters in future electoral events.

The solution has been designed to meet the security, reliability, and compliance expectations required for a national election environment, including alignment with the Privacy Act 2020 and relevant government security standards.

The partnership reflects a shared commitment by the Electoral Commission and Cumulo9 to deliver trusted, secure, and reliable digital communications to New Zealand voters.

This engagement further reinforces Cumulo9’s capability in supporting high-profile public sector communications programmes where trust, scalability and compliance are paramount.

Alongside NZTA and the Electoral Commission, Cumulo9 also supports a range of other government organisations, including ACC, the Ministry of Education and the Ministry of Social Development.

These partnerships reflect the growing need for government agencies to modernise communications infrastructure while maintaining the highest standards of privacy, security and accessibility. Whether delivering transactional messaging, citizen notifications, digital correspondence or operational communications, Cumulo9’s solutions are designed to support complex public sector requirements.

Government agencies are increasingly looking for communication platforms that can deliver measurable outcomes, reducing reliance on physical mail, improving delivery performance, supporting digital inclusion and enabling more responsive citizen engagement. Cumulo9’s technology and expertise help agencies achieve these objectives while ensuring reliability at scale.

As digital communication strategies continue to evolve, Cumulo9 is also supporting the future of secure digital delivery through its partnership with e-Boks.

The partnership between Cumulo9 and e-Boks helps support government and enterprise organisations looking to adopt secure digital postbox solutions that improve communication efficiency and accessibility. The collaboration aligns closely with the direction many governments globally are taking toward trusted digital communication environments.

Through this partnership, Cumulo9 can help organisations transition from traditional paper-based communications toward secure digital delivery models that provide better user experiences while reducing costs and environmental impact.

You can read more about the partnership here.

Cumulo9 is also an approved supplier on the Department of Internal Affairs (DIA) Marketplace, making it easier for government agencies to engage trusted digital communications expertise and solutions through an established procurement pathway.

Being listed on the DIA Marketplace provides agencies with confidence that Cumulo9 meets the standards and expectations required for public sector engagements, while simplifying the procurement process for organisations seeking secure and scalable communication solutions.

As government organisations continue to accelerate digital transformation initiatives, communication platforms must do more than simply send messages. They need to deliver reliability, security, visibility, compliance and scalability, all while supporting better outcomes for all New Zealanders.

Cumulo9’s experience working with agencies such as NZTA, the Electoral Commission, ACC, the Ministry of Education and the Ministry of Social Development demonstrates its capability in delivering communications solutions tailored to the unique needs of the public sector.

With secure infrastructure, proven deliverability expertise, scalable transactional messaging capabilities and a strong understanding of government requirements, Cumulo9 is well positioned to support agencies as they continue their digital communication journeys.

Interested in finding out more? Get in touch with the Cumulo9 team today.