How Wonder Cave and Rebrandly are Transforming 1:1 Messaging
Wonder Cave sends up to 50 million texts a day. To make that channel measurable, they needed a unique branded link per recipient, generated in real time. Here's how the two companies built it — and what it did to engagement.
Goal
Turn SMS into a measurable marketing channel, not just a send.
Blocker
No per-contact link tracking existed at text-message volume.
Constraint
10M messages daily, each with its own branded link.
Outcome
Rebrandly Relay™ — now standard on 97% of campaigns.
Summary
Wonder Cave, a text messaging technology company, needed to enhance text messaging as a viable marketing channel by adding personalization and real-time analytics capabilities. They partnered with Rebrandly to create a system for generating unique, branded links with custom domains at a massive scale - up to 10 million messages daily.
The partnership resulted in Wonder Cave's customers seeing a 60% increase in click-through rates, with 97% of all campaigns managed by Wonder Cave now using these tracking features. The collaboration culminated in Rebrandly Relay™, a fully automated messaging solution that drives a flywheel of superior performance and actionable insights for text campaigns.
“Rebrandly is the best we’ve seen — they can create a crazy amount of volume with the highest deliverability and performance — more than a million links in a minute.”
Overview
Text is the channel people actually open - and, until recently, the one channel marketers couldn't measure person by person.
Text messaging is one of the most popular forms of communication worldwide, with over two trillion texts sent yearly. Text is strategic and tactical, efficient and effective, boasting a 98% open rate and immense ROI, generating $71 for every dollar spent.
Industry context
2 trillion
texts sent yearly
98%
open rate
$71
for every dollar spent
+20% YoY
increase in SMS spend
In a world where communication is fragmented and channel proliferation is accelerating, traditional modes of marketing distribution like email, social media, and display ads are losing effectiveness. Brands must make intelligent bets with their marketing budgets or risk losing relevance and revenue for good. Text messaging's uniquely personal method of 1:1 connection makes it a particularly effective marketing and communication channel. Marketing organizations are increasing their SMS spend by over 20% YoY.
To make the case even more potent, the potential reach of SMS, MMS, RCS, and other text services is enormous, so there is an opportunity for exponential performance, assuming the right tools are in place. Wonder Cave, who offers peer-to-peer (P2P) and application-to-peer (A2P) solutions, recognized the opportunity and built its platform to help businesses connect and engage with audiences through various forms of text messaging.
In Rebrandly, Wonder Cave found a perfect partner to expand its 1:1 text messaging infrastructure with a unified goal of supporting the technical needs of organizations seeking audience engagement at scale.
The challenge: Making text campaigns data-driven and personal at scale
The industry assumed per-contact link tracking couldn't exist inside a text solution. Wonder Cave needed it to work 10 million times a day.
To establish itself as a challenger in the global CPaaS market, Wonder Cave needed to address the inherent friction in text message marketing head-on. Just three years ago, text messaging wasn't as well-established as other marketing channels, like email or social media - mainly due to the lack of visibility into messaging campaign performance.
With the rise of data-driven marketing across channels, it was clear that existing messaging tools lacked the necessary embedded functionality to evolve texting into a viable marketing and communications channel.
“There was an assumption that granular analytics and insights, or sending custom links per contact, wouldn't be part of a text solution.”
Webb Bostic, President of Wonder Cave, on the industry's legacy limitations
The Wonder Cave team sought to enhance their platform with personalization and real-time campaign analytics. After researching enterprise link management solutions recommended by other Stagwell Marketing Cloud companies, they realized Rebrandly's API was robust and reliable enough to handle the massive volume of messages sent through their platform, which can average up to 10 million daily.
10 Million
Increase in click-through rates for Wonder Cave users after implementing Rebrandly branded links
Wonder Cave partnered with Rebrandly to create a system for generating unique, branded links featuring custom domains. These links are generated at a scale that matches their client's high-volume messaging needs.
Rebrandly's technology team collaborated with Wonder Cave on the design and testing of the solution, giving Wonder Cave confidence and peace of mind and a growth-minded partner who shared their vision and dedication to revolutionizing the future of personalized messaging at scale.
The Solution: Scaled text campaigns with unique branded links and real-time analytics
One generic link became a unique branded link per recipient - and the feature went from nice-to-have to the number one client ask.
Rebrandly's link management expertise enables Wonder Cave to offer its clients link customization and dynamic link tracking, enhancing their campaigns' effectiveness and clarity. Instead of sending the same generic link to everyone and hoping for the best, users can generate unique, branded short links with real-time reporting and analytics. That advanced functionality improves sender recognition, boosting view-through rate (VTR), conversion rates, and overall campaign performance.
Those improvements transformed Wonder Cave customers' thoughts about their content strategy and text initiatives as a strategic growth lever - not just another communication channel.
60%
Increase in click-through rates for Wonder Cave users after implementing Rebrandly branded links
Dynamic link tracking and real-time link audience analytics quickly became a key feature for Wonder Cave's users.
“97% of our campaigns include these features. […] The functionality that Rebrandly enables is now the number one ask from our clients.”
“Our customers have been able to elevate their data, get rapid feedback on performance, and scale campaign optimization with us as a result,” explained Rohr.
Working with Rebrandly to facilitate large-scale link generation and analytics features allowed the Wonder Cave team to turn text messaging into a valuable and viable marketing channel for its customers. The strengthening partnership between the two companies led to more insights into the nature of 1:1 communications at scale and the opportunity to join forces and innovate, together.
Impact: Relay powers 50M daily messages with 60% higher engagement
The partnership shipped as a product - and non-profits used it to raise more during hurricane relief.
December 2024
Rebrandly Relay™ launches
Rebrandly and Wonder Cave released Rebrandly Relay™ to streamline 1:1 text messaging for the global communications market.
Relay is a fully automated messaging solution that combines the futureproof deliverability and automation Wonder Cave is known for with Rebrandly's real-time analytics and scalable custom domain generation — for a seamless messaging experience that drives exponential engagement.
30%
Increase in click-through rates for Wonder Cave users after implementing Rebrandly branded links
“Every customer has benefited since we launched this integration. Our clients can more easily hone in on engaged audiences, which reduces their overall texting spend and dramatically increases ROI.”
Wonder Cave manages a vast number of messages on behalf of its clients every day, sometimes up to fifty million in a single day. Their customers rely on the deliverability of those messages to be processed with unique, branded, trackable links for each recipient.
“I've long held that speed is one of our biggest differentiators in the market. I don't think anyone can produce as many messages as fast and reliably as we can. And for that kind of velocity, there's just no other option. Rebrandly is the best we've seen - they can create a crazy amount of volume with the highest deliverability and performance – more than a million links in a minute.”


