How over-investing in paid media and SMS can quietly erode your most effective channel.
Over the past few years, I’ve watched marketing budgets shift in a very predictable direction, particularly in how brands invest in and activate their owned audience. More money toward paid digital media, more experimentation with SMS, and more pressure to diversify channels and show visible activity. The intention is understandable. Marketing leaders want to be where their customers are, and no one wants to appear stuck relying on a channel that some still dismiss as old-fashioned.
What is less often examined is what this shift costs when the audience is already known, already reachable, and already owned.
But when I step back and look at the results, the pattern is hard to ignore. In many organizations, increased spending on SMS and paid digital media is not creating incremental value. Instead, it is quietly diluting the impact of the channel that continues to deliver the strongest and most consistent returns: email.
This is not an argument against innovation, nor a nostalgic defense of legacy tools. It is a practical observation about finite audiences, finite budgets, and the unintended consequences of reallocating spend away from the one channel most brands actually own.
A Finite Audience and a Finite Pie (and the Limits of an Owned Audience)
“When brands begin paying to reach people who are already known, already opted in, and already reachable through owned channels, they are not expanding the pie. They are simply slicing it differently.”
Most brands are not marketing to an infinite universe of prospects. They are speaking to a defined, known audience — customers, past guests, subscribers, members — the very foundation of relationship marketing.
Every additional channel layered on top of that audience draws from the same pool of attention and budget. When brands begin paying to reach people who are already known, already opted in, and already reachable through owned channels, they are not expanding the pie. They are simply slicing it differently.
In practice, this often means diverting budget away from acquisition, where paid digital media performs best, and redirecting it toward retention audiences that an owned audience strategy built on email can already reach at a marginal cost close to zero. The result is not better performance across channels, but a gradual erosion of email’s effectiveness as attention, frequency, and messaging become fragmented.
The Rising Enthusiasm for SMS
SMS has gained enormous traction in recent years, largely because it promises immediacy. Open rates are high, messages are hard to ignore, and early results can feel compelling. For certain use cases, that immediacy is genuinely valuable.
The challenge is that this early success often masks the trade-offs. Because SMS feels measurable and immediate, it is easy to extend its use beyond the moments where it truly adds value.
Unlike email, SMS does not scale cheaply. Every message has a cost, and those costs rise quickly as databases grow. Compliance requirements are stricter, with real legal and reputational risks attached to mistakes. More importantly, the tolerance consumers have for marketing messages in such a personal space is limited. A text message feels different from an email. It interrupts rather than invites.
Used sparingly, SMS can be effective for urgent, time-sensitive, or transactional communication. Used aggressively to engage the same known audience repeatedly, it risks accelerating fatigue and opt-outs while delivering diminishing returns.
Paid Digital Media and the Illusion of Control
“When paid media budgets grow at the expense of email investment, organizations end up paying more to maintain conversations they once had at a fraction of the cost.”
Paid digital media presents a different challenge. On the surface, it feels measurable and controllable. Budgets go in, impressions and clicks come out. Dashboards light up, reports are easy to share, and activity is highly visible.
In practice, however, the underlying dynamics are less stable than they appear. Costs tend to rise as competition intensifies. Platform rules and algorithms change with little notice. Attribution grows more complex as customer journeys stretch across devices and channels. Even when campaigns perform well, the audience remains borrowed, not owned.
Paid media excels at discovery and acquisition. It introduces brands to people who have no existing relationship with them. Where it begins to lose efficiency is when it is used to repeatedly target audiences that already know the brand and are already reachable through owned channels. This use often feels rational because it is precise, trackable, and easy to justify internally.
When paid media budgets grow at the expense of email investment, the organization ends up paying more to maintain conversations it once had at a fraction of the cost.
Why Email Continues to Outperform Within an Owned Audience Strategy
Email’s continued strength is not accidental. It combines reach, control, and flexibility in a way no other channel currently matches.
Messages enter the inbox ecosystem based on sender behavior, authentication, and reputation, rather than on auction dynamics where reach is bought, throttled, or withheld based on spend. Audiences are permission-based, which creates a fundamentally different relationship between brand and recipient. Modern email marketing platforms allow for sophisticated segmentation, personalization, and automation, making relevance achievable at scale rather than aspirational.
Email also offers a creative canvas that other channels lack. It can support storytelling, education, and persuasion within a single message. Most importantly, it is measurable in ways that allow continuous improvement without escalating costs.
For many organizations, email remains the primary driver of attributable revenue. Yet it is often treated as a background channel, expected to perform without proportional investment in strategy, content, or data.
What This Looks Like in Practice
In travel and hospitality, these dynamics are especially visible because audiences are well-defined and relationships often span multiple touchpoints over time.
It is common to see organizations rely heavily on paid channels to promote offers to people who are already known, while underinvesting in email programs designed to engage those same audiences more deliberately. Awareness budgets grow, SMS promotions multiply, and yet the underlying opportunity remains unchanged: the ability to reach known guests and subscribers through owned channels with greater relevance and lower marginal cost.
In each case, the issue is not channel choice but channel priority. When email is underfunded or deprioritized, organizations end up paying to maintain attention and engagement they already possess.
Rebalancing, Not Replacing
This is not a call to abandon SMS or paid digital media. Both have clear roles when used with deliberate intent and clear boundaries.
Paid digital media is well suited to acquisition and reach beyond existing audiences. SMS works best for urgent or critical communication where immediacy matters. Email, however, is uniquely positioned to carry the ongoing relationship: nurturing interest, setting expectations, supporting experiences, and sustaining loyalty over time.
A balanced strategy assigns each channel its proper role, rather than forcing all channels to perform the same job under very different economic models.
Where Channels Work Together, Not Against Each Other
There are also important realities this argument does not ignore.
Not every audience is reachable by email. Over time, lists decay. Consent expires. In markets like Canada, regulations such as CASL impose clear limits on how long brands may communicate without renewed permission. In these cases, paid digital media plays a complementary role, allowing brands to reach audiences they can no longer engage through email alone. Used this way, digital media does not replace email; it extends reach where email is no longer available.
Attribution further complicates the picture. Many organizations continue to rely on last-interaction models that assign credit to the final touchpoint before conversion. In practice, this often favors paid digital media, especially when retargeting is used to reach guests moments before they would have converted through an email already in motion. The result is not that email failed to influence the outcome, but that its role earlier in the journey is rendered invisible.
Finally, channel silos remain a persistent obstacle. Digital media specialists may optimize within their own tools without visibility into email strategy or lifecycle programs. Email teams, in turn, may lack insight into how paid campaigns are sequenced or measured. When channels are managed in isolation, conversion appears to belong to whichever system records the final click, reinforcing the belief that no alternative path exists.
In these environments, the issue is not channel effectiveness, but coordination. When email, paid media, and SMS are understood as interconnected parts of a single system, their roles become clearer — and their combined impact more accurately understood.
A Question Worth Asking
“Rebalancing investment toward owned, high-performing channels is not a step backward. It is a pragmatic move grounded in how value is actually created.”
For marketing leaders, the most important question may not be which new channel to adopt next, but whether the current mix reflects how value is actually created.
Are budgets being allocated to expand the audience, or to pay repeatedly to reach the same people? Is email being expected to perform without the level of investment required to keep it effective, while newer channels are adopted because they feel modern and visible?
Email has not lost its relevance as the primary activation channel for most owned audiences. In many organizations, it has simply been taken for granted. Rebalancing investment toward owned, high-performing channels is not a step backward. It is a pragmatic move grounded in how value is actually created.
