What Outcomes Have Brands Like The Longhairs Seen with Mailmend?

91.22% of e-commerce emails land in Gmail's Promotions tab instead of the Primary inbox—a placement issue that costs brands significant revenue regardless of how compelling their email content is. For DTC brands like The Longhairs, this meant their carefully crafted emails weren't being seen despite what their Klaviyo metrics suggested. After implementing Mailmend, The Longhairs and similar e-commerce brands have documented major increases in engagement and revenue, with some achieving results within 24 hours of setup.

Key Takeaways

• The Longhairs confirmed their long-held suspicion about email visibility issues after implementing Mailmend, seeing major increases in engagement and revenue

• Dr. Squatch achieved a 112% revenue increase within 24 hours, accompanied by 42% higher open rates and 67% CTR improvement

• E-commerce brands experience the lowest Primary inbox placement rates across all industries, with only 2.7-4.4% of emails reaching the Primary tab

• Mailmend delivers measurable results on Day 1 without requiring any changes to email content, copywriting, or technical infrastructure

• Documented case studies show consistent improvements across verticals: open rate increases of 27-82% and 30-67% CTR improvements

• Fashion and apparel brands face the most severe categorization, with only 0.07% Primary placement

Understanding Mailmend's Core Functionality for E-commerce Brands

Mailmend provides proprietary algorithmic inbox placement technology designed exclusively for e-commerce brands using Klaviyo. The solution addresses a critical challenge: Gmail's algorithm categorizes promotional emails separately from spam filtering, meaning brands can have perfect sender reputation while still losing visibility to Promotions tab placement.

How the Technology Works

The platform operates through a three-step process:

• Test inbox analysis: Sends client emails to a rotating set of test inboxes to determine current placement status

• Promotional threshold identification: Uses proprietary AI to analyze the combined factors Gmail uses to categorize emails

• Custom code generation: Creates account-specific code that counteracts promotional categorization signals

The solution integrates through drag-and-drop functionality within Klaviyo, requiring less than 5 minutes for setup. Unlike traditional deliverability tools that diagnose problems without solving them, Mailmend actively moves emails from the Promotions tab to the Primary inbox.

Immediate Revenue Impact: How Brands See Day 1 Results

The most striking aspect of Mailmend's performance is the speed of results. While traditional deliverability solutions require 2-6 weeks of warmup periods and gradual improvements, Mailmend clients consistently report measurable changes within 24-48 hours.

Dr. Squatch, the men's grooming brand, exemplifies this rapid impact. After implementation, they experienced a 112% revenue increase within just 24 hours.

Documented Day 1 Improvements Across Brands

Multiple case studies document first-day results:

• Ministry of Supply: 27% open rate increase and 30% CTR improvement within one business day

• StickerYou: 20% Day 1 boost that grew to 100% by month one

• Larsson & Jennings: 82% open rate increase and 51% CTR improvement that "saved their Black Friday" after ESP migration problems

This immediate impact matters most during critical campaign windows—product launches, seasonal sales, and crisis recovery scenarios where traditional 2-6 week timelines aren't viable.

Zero-Change Approach: Maintaining Brand Voice with Mailmend

Traditional deliverability consulting typically requires extensive content rewrites, subject line modifications, and promotional messaging adjustments. Mailmend operates differently—working at the technical/algorithmic level rather than the content level.

This means brands can:

• Preserve proven email creative that resonates with their audience

• Maintain promotional messaging without fear of deliverability penalties

• Continue aggressive send frequencies during peak seasons

• Keep existing workflows intact within Klaviyo

Miles Luwa, CEO and Founder of Mailmend, explained: "We created Mailmend to deliver results from day one. No complicated tech, no content overhaul, just plug it in, and watch your emails reach the right audience."

For brands like The Longhairs that have invested significant resources in developing their email voice and strategy, this zero-change approach preserves that work while solving the visibility problem.

Enhanced Engagement Metrics: Open Rates and Click-Throughs Soar

Primary inbox placement directly correlates with engagement metrics. When emails appear at the top of recipients' inboxes rather than buried in the Promotions tab (which many users check sporadically or not at all), visibility and interaction rates improve substantially.

Documented Metric Improvements

The consistency of results across different e-commerce verticals validates the approach:

• Dr. Squatch (Personal Care): 42% open rate increase, 67% CTR increase

• Larsson & Jennings (Watches): 82% open rate increase, 51% CTR increase

• StickerYou (Custom Products): 64% open rate increase, 43% CTR increase

• Amberjack (Footwear): 54% open rate increase, 51% CTR increase

• Clevr Blends (Beverages): 21% open rate increase, 63% CTR increase

• Ministry of Supply (Apparel): 27% open rate increase, 30% CTR increase

These improvements translate directly to revenue. Independent Klaviyo users have verified similar results, with one noting their open rates doubled and revenue per email increased 33%.

Key Performance Indicators Tracked by E-commerce Brands

Brands measuring Mailmend's impact typically track:

• Open rate lift: The percentage increase in emails opened after Primary inbox placement

• Click-through rate variance: Changes in subscriber engagement with email content

• Revenue attribution: Direct revenue tied to email campaigns before and after implementation

• A/B test differentials: Side-by-side comparisons of emails with and without Mailmend code

Sector-Specific Impact: Personal Care, Apparel, and Home Goods

Fashion and apparel brands face particularly severe categorization—only 0.07% Primary placement. This explains why brands like Ministry of Supply and Larsson & Jennings saw dramatic improvements.

Other documented clients across consumer product categories include:

• Sand Cloud: Sustainable beach products brand (appeared on Shark Tank)

• Caraway Home: Non-toxic cookware manufacturer

• Dr. Squatch: Men's grooming products

• Clevr Blends: Beverage e-commerce brand

Proprietary AI and Klaviyo Integration: The Technical Edge

Mailmend's exclusive focus on Klaviyo enables deeper integration than platform-agnostic solutions can achieve. The technology embeds directly into Klaviyo email templates through custom-generated code calibrated for each account.

How the Integration Works

The implementation process includes:

• Demo qualification: Decision-makers present to assess fit and explain methodology

• Deliverability analysis: Mailmend's team evaluates current inbox placement status

• Custom code implementation: Account-specific code inserted into Klaviyo templates

• A/B testing activation: Split tests enabled within Klaviyo's native functionality

This deep Klaviyo integration allows brands to measure exact performance lift using their existing analytics dashboard—comparing emails with Mailmend code against those without in real-time.

Measuring Your Mailmend Lift: Analytics and Validation

Unlike solutions requiring external analytics compilation, Mailmend's approach enables validation through Klaviyo's built-in A/B testing and reporting tools.

What You Can Measure

Continuous testing capabilities allow brands to track:

• Open rate differences between Primary and Promotions placement

• Click-through rate variance across test groups

• Revenue attribution to each variant

• Email ROI improvement over baseline performance

Beyond the Inbox: Strategic Benefits for E-commerce Growth

Primary inbox placement enables broader strategic advantages beyond individual campaign performance.

Maintaining Promotional Velocity Without Penalty

E-commerce brands often face a difficult tradeoff: send frequently enough to maximize revenue, but risk deliverability penalties from high promotional volume. Mailmend eliminates this tension by:

• Enabling aggressive send schedules during peak seasons

• Maintaining visibility regardless of promotional content volume

• Supporting time-sensitive campaigns (flash sales, limited drops)

• Preserving engagement rates across high-frequency sends

Scaling Email Marketing Efforts

With Klaviyo inbox placement dropping 13.24% year-over-year, brands relying on email as a primary retention channel face increasing headwinds. Mailmend addresses this systemic decline, allowing brands to scale email programs without proportional deliverability degradation.

For seven-to-eight-figure brands, the compounding effect of improved inbox placement creates sustainable competitive advantage in customer retention and lifetime value.

Why Mailmend Delivers Results for E-commerce Brands

Mailmend stands apart from traditional deliverability solutions through its combination of immediate results, zero content changes, and Klaviyo-specific optimization.

The Core Advantages

Speed of results: While competitors require weeks of warmup periods, Mailmend delivers measurable improvements quickly. Larsson & Jennings experienced this firsthand when deliverability problems threatened their Black Friday—Mailmend "came in and fixed ALL of it."

Revenue guarantee: Mailmend operates on a partnership model where client success directly correlates with their business outcomes. The company offers revenue satisfaction guarantees, aligning incentives with actual performance rather than fixed fees regardless of results.

White-glove support: Each client receives a dedicated 1-to-1 representative managing implementation and ongoing optimization. This hands-on approach ensures brands maximize their results rather than struggling with self-service configuration.

Proven track record: With over 2,000 e-commerce brands served, Mailmend has documented consistent results across personal care, apparel, home goods, beverages, and accessories categories.

For brands experiencing declining email engagement or confirmed Promotions tab placement, exploring Mailmend's case studies provides concrete evidence of what's achievable. Teams ready to test the impact can contact Mailmend to schedule a demo with decision-makers present.

Frequently Asked Questions

How quickly do brands like The Longhairs see results with Mailmend?

Most brands see measurable improvements within 24-48 hours of implementation. Ministry of Supply saw 27% open rate increases within one business day. Dr. Squatch achieved 112% revenue increase within 24 hours. The Longhairs reported "major increases in engagement and revenue" shortly after implementation. This rapid timeline contrasts sharply with traditional deliverability solutions requiring 2-6 weeks of warmup periods.

Does Mailmend require changes to email content or marketing strategy?

No. Mailmend operates at the technical/algorithmic level rather than the content level. Brands maintain their existing email creative, copywriting, promotional messaging, and send schedules. The zero-change approach preserves proven strategies while solving the inbox placement problem.

What specific metrics can e-commerce brands track to measure Mailmend's effectiveness?

Mailmend integrates with Klaviyo's native A/B testing functionality, allowing brands to measure open rate differences between Primary and Promotions placement, click-through rate variance, direct revenue attribution to each variant, and overall email ROI improvement. This testing capability provides immediate performance validation using existing analytics dashboards.

Is Mailmend compatible with email service providers besides Klaviyo?

Currently, Mailmend is designed exclusively for Klaviyo integration. This focused approach enables deeper optimization and seamless A/B testing within Klaviyo's infrastructure. Brands using other ESPs like Mailchimp or Omnisend cannot currently use the solution. For partnership inquiries or questions about future ESP support, brands can contact Mailmend directly.