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Sticky Digital

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Sticky Digital is a retention marketing agency specializing in end-to-end email, SMS, loyalty, and subscription programs for DTC brands.

Overview

Sticky Digital is a retention marketing agency focused on making your customers stick through email, SMS, loyalty, and subscription programs, and optimizing technology stacks to support long-term growth. As a Klaviyo Platinum Partner, they specialize in building full lifecycle retention programs for direct-to-consumer brands. They advocate a connected, data-driven approach rather than treating email, SMS, loyalty, and subscriptions as separate campaigns. Their services span strategy, program design, and execution across the entire customer journey, with emphasis on maximizing lifetime value, repeat purchases, and customer loyalty. They position themselves as the only full-service white-glove retention agency, focused exclusively on retention rather than paid media, SEO, or broader branding. The organization emphasizes measurable results, a strong client roster, and a commitment to helping brands scale through lifecycle-driven programs that align with modern ecommerce tech stacks.

Mission statement

We are a retention marketing agency focused on making your customers stick through email, SMS, loyalty, subscription, and tech stack optimization.

What we offer

Email & SMS Programs

Service

Comprehensive email and SMS programs that enhance customer retention and drive revenue.

stickydigital.io/pages/services

Subscription Growth

Service

Enhance subscriber retention and reduce churn through targeted subscription strategies.

stickydigital.io/pages/services

Retention Audits

Service

Optimize retention strategies with comprehensive audits for email and SMS programs.

stickydigital.io/pages/services

Klaviyo Migration Service for DTC Brands

Service

Streamline your migration to Klaviyo with a complete service designed for DTC brands, ensuring optimal performance and adherence to your existing attribution framework.

stickydigital.io/blogs/direct-to-consumer-retention-topics/klaviyo-migration-service-for-dtc-brands-what-a-complete-scope-includes

Market segments

Market size by segment

Growth potential (CAGR)

Retention and lifecycle marketing

15 Billion USD12% CAGR

Customer lifecycle and retention programs using targeted email and SMS workflows, loyalty programming, journey mapping, and LLM-augmented automation to grow repeat purchase and lifetime value.

Email platform migration and deliverability

0.3 Billion USD10.5% CAGR

Migration, technical setup, and deliverability-preserving onboarding for ecommerce brands moving to email platforms (notably Klaviyo), including attribution configuration, warm-up strategy, and event-based flow rebuilds.

Subscription lifecycle management and retention

3.5 Billion USD14% CAGR

End-to-end subscriber lifecycle capabilities including onboarding, self-service portals, cancel flows, win-back offers, intelligent retries, and proactive churn prediction to maximize retention.

Loyalty and rewards management

12 Billion USD11% CAGR

Design, delivery, and real-time management of loyalty programs and personalized rewards with integration across digital channels to improve retention.

More information about our offering

Email & SMS Programs

Full-service retention marketing program delivering coordinated email and SMS campaigns and automated flows. We architect the full program with segmentation strategy, flow infrastructure, campaign cadence, and creative direction to ensure messages land with the right people at the right moments. The approach is lifecycle-driven and integrates with loyalty and subscription programs to maximize lifetime value. Sticky Digital positions itself as a retention-only partner and is a Klaviyo Platinum Partner, focusing on results achieved through coordinated, data-driven programs rather than paid media.

  • Maximize Customer Lifetime Value
    Focuses on strategies that encourage repeat purchases and long-term loyalty, ensuring sustainable revenue growth.
  • Tailored Loyalty Solutions
    Enhances effectiveness by creating programs that truly resonate with the customer base, focusing on behavioral shifts rather than just rewards.
  • Automate Customer Journeys
    Creates seamless experiences for customers through automated messaging at crucial lifecycle stages, enhancing satisfaction and retention.
  • Cohesive Communication Across Platforms
    This ensures customers receive consistent information about their loyalty benefits across all channels, improving user experience.
  • Incentivize Higher Spending
    Encourages customers to engage more with your brand, fostering a sense of belonging and increasing their lifetime value.
  • Optimize Message Timing
    Ensures your emails and SMS are sent at the most effective times to maximize engagement and conversions.
  • Targeted Messaging
    Implements precise audience segmentation to deliver personalized messages that resonate and convert effectively.
  • Integrate Loyalty Messaging
    This feature enables consistent communication that enhances customer interaction and retention by reminding them of loyalty benefits.
  • Simple Redemption Process
    A user-friendly system enhances participation rates and ensures customers feel their efforts are rewarded efficiently.
  • Enhance Visual Appeal
    Delivers visually appealing and brand-aligned content that captures customer attention and conveys the desired message.
  • Encourage Sustainable Engagement
    Enhances the effectiveness of retention marketing by leveraging customer loyalty initiatives and lifetime value strategies.

Subscription Growth

Subscription growth services that reduce churn and improve retention for brands using Recharge, Stay.ai, and Ordergroove. We build flows, cancellation interventions, and win-back sequences while also offering seasonal subscription options to attract and retain subscribers, all integrated within the broader lifecycle program.

  • Reduce Subscriber Churn
    Implementing comprehensive strategies that proactively address factors leading to subscriber attrition, enhancing overall subscriber loyalty.
  • Recover At-Risk Subscribers
    Developing strategies that directly target subscribers considering cancellation, ensuring they are given incentives or improved services to continue their subscription.
  • Enhance Lifecycle Engagement
    Creating seamless transitions between different engagement touchpoints, ensuring that subscription offerings are presented contextually within the customer journey.
  • Seamless Tech Stack Integration
    Utilizing advanced technology integrations to simplify the subscription process and enhance user experiences across platforms.
  • Attract with Seasonal Offers
    Offering unique seasonal subscription options that cater to changing consumer preferences and encourage repeat purchases.

Retention Audits

Retention audit service that analyzes current email and SMS programs to identify opportunities, optimization gaps, and a path forward. Includes a complimentary audit for new clients, with a focus on Black Friday/Cyber Monday experience readiness and actionable recommendations for lifecycle improvement.

  • Prepare for Busy Seasons
    Ensure your retention programs are equipped to handle increased traffic and optimize engagement during peak shopping periods.
  • Improve Lifecycle Performance
    Receive detailed insights and strategies to enhance customer engagement and retention length.
  • Discover Optimization Gaps
    Gain a thorough understanding of your program's strengths and weaknesses to better target improvements.
  • Identify Growth Opportunities
    Find hidden potential within your existing strategy to enhance customer loyalty.
  • Align Programs with Lifecycle Stages
    Ensure your retention strategies effectively support customer journeys across various touchpoints.

Klaviyo Migration Service for DTC Brands

Comprehensive Klaviyo migration service for direct-to-consumer brands. The scope covers pre-migration audit and planning, technical setup and data migration, flow and content rebuild, warm-up strategy and monitoring, and reporting and attribution configuration. The service emphasizes attribution baseline documentation and a deliverability-preserving warm-up period (10–14 days) to protect performance, rebuilding automations as event-based flows rather than tag-driven sequences when appropriate.

  • Assess Attribution Before Migration
    Document your previous platform’s attribution window to ensure accurate reporting post-migration.
  • Maintain High Deliverability Rates
    Execute a controlled warm-up strategy to ensure emails reach the inbox during the critical transition period.
  • Transition to Event-Driven Automation
    Transform existing automation flows from a tag-based to an event-based configuration, improving relevance and efficiency.
  • Ensure Smooth Data Transfer
    Implement precise data migration practices to prevent loss of subscriber information and maintain continuity.
  • Optimize Sending Practices
    Monitor and adjust email sending practices during the warm-up period to avoid deliverability issues and ensure favorable outcomes.
  • Identify Opportunities for Improvement
    Perform a comprehensive review of current systems to maximize the effectiveness of the Klaviyo migration.

References

Methodology and sourcing behind the market figures shown above.

Retention and lifecycle marketing

No explicit market-size or CAGR figures were present in the provided search results (content focused on definitions, benefits, and tactics). I estimated size by aggregating adjacent software/service categories that constitute retention & lifecycle marketing: marketing-automation/email/SMS workflow platforms, loyalty-management and lifecycle orchestration (CDP/automation) and professional services for program design/implementation. A conservative, mid‑range aggregate for the global retention/lifecycle marketing segment (software + services) is ~$15B today, reflecting a slice of the broader martech/CRM ecosystem. Growth potential (CAGR ~12%) reflects accelerating investment in personalization, automation and LLM-augmented orchestration, plus increasing emphasis on retention vs. acquisition—consistent with typical marketing-automation/loyalty/software growth rates in recent years. Estimates assume continued SaaS adoption, expansion of SMS/email automation, and rising spend on loyalty and journey orchestration tools.

Email platform migration and deliverability

Estimated from published email-deliverability market reports in the search results. Credence Research values the global Email Deliverability Tools market at USD 444.6M (2024) with a 10.5% CAGR; MarketResearchFuture reports a larger industry estimate (USD 2.285B in 2024). The requested segment (ESP migration + deliverability-preserving onboarding for ecommerce) is a services/subset of the broader deliverability/tools market (professional services, migration projects, warm‑up and setup). Conservatively assuming migration/onboarding services represent a portion of the overall deliverability/tools market (roughly mid‑to‑high tens of percent in aggregate across vendors and agencies) yields an estimated addressable market around USD 0.3B in 2024. Growth potential uses Credence’s 10.5% CAGR as a proxy for segment expansion driven by rising email volumes, platform migrations, and compliance/deliverability needs.

Subscription lifecycle management and retention

Search results did not include an explicit SLM market-size number. I used the Recurly data point showing global subscription growth (~12.6% in 2025) as a demand proxy and applied domain knowledge about vendor revenues and adjacent subscription-billing/retention software spend to estimate a global SLM & retention software market of roughly $3.5B. Given subscription market growth (12.6%) and increasing vendor spend on retention tools, I estimate SLM-specific CAGR at ~14% (slightly above subscription growth to reflect prioritization of retention investments).

Loyalty and rewards management

Sources show a 2023–2025 market size cluster around USD ~9.8–15.2B (MarketsandMarkets, Fortune, GMI, others). I selected a conservative present market size of ~USD 12B (close to 2024 figures from multiple reports). Reported CAGRs vary (9.6%–24%); balancing established analyst estimates (MarketsandMarkets 9.6%, Fortune 14.6%) and higher forecasts, I estimate a mid-range growth potential of ~11% CAGR.

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