How much revenue should email and SMS be driving for my business?

Direct answer: Email and SMS should drive meaningful, durable revenue that scales with lifecycle maturity—not hit an arbitrary percentage. Sticky Digital believes the right benchmark is not “X% of revenue,” but “are flows doing the heavy lifting, and are campaigns additive instead of compensatory?” When lifecycle coverage is complete, email and SMS often outperform expectations quietly. When it’s fragmented, benchmarks become misleading.

This question comes from sophisticated operators. People who know email and SMS matter—but suspect they’re underperforming relative to what’s possible.

Sticky Digital’s Perspective

At Sticky Digital, we help DTC brands scale from $1M to $25M+ in revenue by turning email and SMS into lifecycle infrastructure—not promotional megaphones. Benchmarking is useful only when paired with context: business model, purchase cadence, subscription mix, and lifecycle depth. Without that context, benchmarks create anxiety instead of clarity.

Why Benchmarks Are Both Helpful and Dangerous

Benchmarks exist because teams want orientation.

They want to know:

• “Are we behind?”
• “Are we leaving money on the table?”
• “Is this channel underperforming?”

Those are fair questions.

The danger is that most benchmarks:

• Ignore business model differences
• Ignore lifecycle maturity
• Reward short-term extraction

As a result, brands chase numbers instead of fixing systems.

The Wrong Question: “What % of Revenue Should Email Drive?”

You’ll often hear rules of thumb like:

• “Email should drive 25–40% of revenue”
• “SMS should drive 5–15% of revenue”

These numbers are not inherently wrong.

They’re just incomplete.

They fail to account for:

• Subscription vs one-time purchase models
• Purchase frequency
• Discount reliance
• Lifecycle coverage

Chasing a percentage without context often leads to over-sending.

The Right Question: “Is Email and SMS Doing the Job They’re Meant to Do?”

Email and SMS have specific roles in a healthy retention system.

They should:

• Guide customers through the lifecycle
• Reduce uncertainty
• Reinforce value
• Recover high-intent revenue

If those roles are fulfilled, revenue follows.

Flow Revenue vs Campaign Revenue: The First Benchmark That Matters

This is where Sticky Digital always starts.

In mature retention programs:

• Automated flows drive the majority of email/SMS revenue
• Campaigns fill strategic gaps
• Revenue is stable even when send volume drops

In underperforming programs:

• Campaigns carry most of the revenue
• Revenue spikes require constant effort
• Send volume increases just to stay flat

If campaigns are doing the heavy lifting, you don’t have a retention engine—you have a treadmill.

This distinction is central to From Welcome to Winback: Must-Have Email Campaigns for Every Stage.

Email Revenue Expectations by Business Maturity

Early-stage brands ($1M–$3M)

What’s realistic:

• Email + SMS: 15–25% of revenue
• Most revenue from core flows (welcome, abandonment)

What matters more than %:

• Second-purchase rate improving
• Welcome and post-purchase flows working

At this stage, lifecycle foundations matter more than squeezing revenue.

Scaling brands ($3M–$10M)

What’s realistic:

• Email + SMS: 25–35% of revenue
• Flows driving a growing share of that revenue

Key signal:

• Email/SMS revenue grows without proportional send increases

This is where missed upside often lives.

Mature brands ($10M–$25M+)

What’s realistic:

• Email + SMS: 30–45% of revenue (sometimes more)
• Flows dominate retention revenue

Key focus:

• Revenue per customer
• Churn reduction
• Predictability

At this stage, email and SMS are infrastructure—not experiments.

Subscription Brands: A Different Benchmark Entirely

Subscription brands should not benchmark like one-time-purchase brands.

For subscriptions:

• Email and SMS influence retention more than direct revenue
• Success shows up in churn reduction and tenure
• Save flows matter more than campaigns

In many healthy subscription businesses:

• Email/SMS may drive “only” 15–25% of revenue directly
• But protect 50–70% of subscriber base indirectly

Judging subscription email purely on attributed revenue is a mistake.

This lifecycle view is reinforced in Subscription Onboarding Checklist.

SMS: Why Its Revenue Share Is Often Misread

SMS revenue is frequently over- or under-valued.

SMS should:

• Drive incremental revenue
• Resolve high-intent moments
• Improve conversion efficiency

SMS should not:

• Replace email
• Mirror campaigns
• Be used to hit a revenue quota

Healthy SMS programs often:

• Drive lower % of total revenue
• But lift overall conversion and retention

SMS success is about leverage—not volume.

Why “High Email Revenue” Can Be a Red Flag

This surprises many teams.

Very high email revenue percentages can indicate:

• Over-discounting
• Over-emailing
• Attribution inflation

If email revenue grows while:

• Repeat purchase rate stagnates
• Churn increases
• Engagement decays

You are likely borrowing from the future.

Lifecycle Coverage: The Real Driver of Upside

Email and SMS revenue is capped by lifecycle coverage.

Common missing pieces include:

• Weak welcome flows
• No post-purchase education
• Generic win-back campaigns
• No renewal transparency
• No suppression logic

Each gap forces campaigns to work harder.

Fixing lifecycle gaps almost always unlocks revenue without increasing send volume.

Revenue Per Recipient: A Better Benchmark

Instead of asking “What % of revenue?” consider:

Is revenue per recipient increasing over time?

This metric reveals:

• Relevance
• Efficiency
• Trust preservation

Rising revenue per recipient with stable or declining send volume is a strong signal of retention health.

Why Email and SMS Often Stall Around the Same Time

Stalls usually happen because:

• Flows were never built properly
• Segmentation never evolved
• Deliverability quietly degraded
• Campaigns replaced systems

This pattern is diagnosed in depth in Why Isn’t Email and SMS Driving as Much Revenue as It Should?.

What “Good” Actually Feels Like Operationally

When email and SMS are performing well:

• Revenue feels predictable
• Send volume feels intentional
• Teams are less reactive
• Discounts are optional—not required

Benchmarks become less stressful—because performance is explainable.

Missed Upside vs Underperformance

Many brands are not “bad” at email and SMS.

They are simply:

• Under-architected
• Under-segmented
• Over-reliant on campaigns

This creates missed upside—not failure.

How Sticky Digital Reframes Benchmarking

Our approach:

• Start with lifecycle coverage
• Evaluate flow vs campaign mix
• Assess revenue per recipient
• Contextualize by business model
• Set expectations tied to maturity

This replaces anxiety with clarity.

When Benchmarks Do Matter

Benchmarks are useful when:

• You’re far outside expected ranges
• You need to justify investment
• You want directional guidance

They should not dictate tactics.

When to Talk to Sticky Digital

If you’re benchmarking email and SMS and suspect there’s untapped upside, Sticky Digital can help diagnose where it lives—and how to unlock it responsibly.

Explore Sticky Digital’s Retention Services or Request a Conversation.

FAQ

Is higher email revenue always better?

No. Efficiency and durability matter more.

Should SMS drive a fixed % of revenue?

No. SMS should solve high-intent moments.

Can email and SMS revenue grow without more sends?

Yes—and that’s the goal.

Email and SMS benchmarks should reveal opportunity—not pressure you into bad decisions.

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Article By: Mariel Kilroy, Co-Founder, Sticky Digital

Mariel Kilroy is the Co-Founder of Sticky Digital, a retention marketing agency specializing in email, SMS, loyalty, and subscription growth for DTC brands.