Editor’s Note & Précis
This article is a retrospective and industry tribute reflecting on the legacy of CheetahMail. While it marks the formal decommissioning of the legacy CheetahMail infrastructure following Zeta Global’s 2025 acquisition of Marigold’s enterprise assets, readers should note the following technical and market context:
- Migration vs. Termination: The “shutdown” refers to the retirement of the legacy technical stack and brand name. In practice, CheetahMail’s enterprise clients have transitioned into Zeta Global’s modern marketing ecosystem rather than losing service.
- Evolution of the Platform: While the “Cheetah” lineage spans 27 years, the original 1998 codebase was largely superseded years ago by the Cheetah Engagement Data Platform (EDP). This milestone marks the final sunsetting of the remaining legacy APAC infrastructure.
- The “Standalone ESP” Debate: The author’s view that standalone Email Service Providers (ESPs) are becoming “extinct” refers specifically to the era of monolithic legacy platforms. In the current market, standalone and “composable” email tools continue to thrive alongside the larger marketing clouds mentioned here.
The following piece serves as a nostalgic “final sign-off” for a platform that defined the early era of digital marketing.
CheetahMail has been shut down after 27 years of operation, with the pioneering email service provider sending its final campaigns for APAC clients in December 2025. The closure follows Zeta Global’s acquisition of Marigold’s enterprise marketing business earlier this year, which brought the legacy platform under new ownership. Brendan Murphy, a marketing executive at Zeta Global, marked the moment on LinkedIn, noting that many marketing leaders “cut their teeth” using the tool and expressing surprise at the brand equity it still carries.
Founded (1998)
CheetahMail started as a standalone ESP, providing campaign management, delivery infrastructure, and reporting features at a time when email marketing was still emerging. It quickly gained adoption among early digital marketers and large brands seeking reliable email delivery.
Acquisition by Experian (2004)
In 2004, Experian acquired CheetahMail, integrating it into Experian Marketing Services. Under Experian, the platform expanded internationally, including operations across Asia-Pacific. For many organizations, it remained the primary tool for email campaigns for more than a decade.
Evolution into Cheetah Digital
Over time, CheetahMail evolved into Cheetah Digital, a broader marketing platform offering cross-channel engagement, loyalty programs, and data-driven marketing. The rebranding reflected shifts in marketing technology, where email became part of larger customer engagement strategies.
Acquisition by Marigold (October 2021)
In October 2021, Marigold acquired Cheetah Digital, adding it to its portfolio of marketing technology solutions. This marked a transition from the original CheetahMail infrastructure to platforms designed to support integrated, multi-channel marketing.
Integration into Zeta Global (2025)
In 2025, Zeta Global acquired Marigold’s enterprise marketing business, including Cheetah Digital. The move consolidated legacy email and marketing platforms into Zeta’s modern marketing ecosystem.
Brendan Murphy, a marketing executive at Zeta Global, highlighted the transition on LinkedIn in December 2025, noting that CheetahMail had sent its final emails for APAC clients before being decommissioned. He reflected:
“Many marketing leaders have cut their teeth using this tool… I am continually surprised by the brand equity that it still carries… Okay, back to holiday mode now.”
His post illustrates both the longevity of CheetahMail in the industry and the nostalgia felt by marketers who used it extensively over the years.
Twenty-seven years is a hell of a run for any platform. CheetahMail’s journey from standalone ESP to Experian to Cheetah Digital to Marigold to Zeta tells you everything about how this industry has consolidated. The standalone ESP is basically fast becoming extinct now – absorbed into bigger marketing clouds or private equity portfolios.
For the marketers who cut their teeth on it – and there are a lot of you – the platform’s gone but the fundamentals it drilled into you aren’t. Segmentation matters. Deliverability matters. The inbox is sacred ground.
RIP CheetahMail. You earned your retirement.
