Exclusive Case Study

how we helped a men's grooming brand grow email revenue 5.9x from zero campaigns, and got customers coming back for blades

Bumzzy makes a shaver built for the one place a razor was never designed to reach. It is made for queer men, and especially for bottoms, who want a close, smooth shave without razor burn.

In the 3 months before we started in 2026, Bumzzy sent no campaigns at all and email brought in 4.7% of store revenue. Growth came almost entirely from paid ads. Bumzzy needed email that could sell on its own and bring buyers back.

Two Bumzzy emails on phones: The Zapper Solves It Permanently hero and the Stop Shaving Against The Grain section
CHANNELS ACTIVATED:
Email
SMS
5.9x
attributed revenue from Klaviyo
growth in email revenue, now 26.3% of store revenue
54%
increase in returning customer revenue
of returning shaver buyers came back for blades
36%
increase post-purchase flow revenue
of email revenue from campaigns, up from 0%

when the topic is one most brands won't touch, every email has to answer the question first

The Bumzzy customer has usually tried razors and trimmers already. He has had the cuts and the bumps, and he has real questions before he buys again, starting with whether it is safe back there.

So we wrote the way Bumzzy talks, openly and with humour. Every email answers a real question first, then sells. Shaver owners get a nudge when their blades are due, and customers who have sorted the shave meet the Zapper as the next step for ingrown hairs.

Two Bumzzy emails on phones: the I Was Sceptical Zapper hero and the Bumzzy range product section

from zero campaigns to over a third of email revenue.

Within a few months we were sending most days. Most campaigns had one job: answer a question people were too shy to ask, like whether it is safe to shave there or why bumps show up on day 3. The sales sat around them, timed to payday, Prime Days and Halloween.

"FWD: CONFIDENTIAL (Do not forward)" was the biggest single send of the season, and "Your butt wrote you a letter" made the top 5. In our latest 3 months, campaigns brought in over a third of Bumzzy's email revenue, from a channel that made nothing before.

blade reminders that bring shaver owners back.

When Bumzzy customers come back, it is mostly for blades. Of the shaver buyers who placed a second order, more than half bought replacement blades, usually about 5 weeks after their first order.

So we kept blades in front of shaver owners, from a plain-text reminder to "how old is your blade?". Shaver buyers also get an automatic nudge when their blades are due. Replacement blades are now in nearly 1 in 4 orders.

Bumzzy: 54% of returning shaver buyers came back for replacement blades, and blades are in 23% of all orders
Bumzzy email share of store revenue up from 4.7% to 26.3%, email revenue 5.9x

email revenue grew 5.9x, from 4.7% to 26.3% of store revenue.

In the 3 months before we started, email made 4.7% of Bumzzy's store revenue. In our latest 3 months, it made 26.3%.

Store revenue held steady, up 4.3%. Email grew 5.9 times.

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faqs.

Some questions we get often.

What does Email Kong actually do?

We help eCommerce brands grow repeat revenue. That means building out your full retention strategy - email, SMS, WhatsApp, and more - so you can convert more customers, increase LTV, and reduce reliance on paid ads.

Are you just an email agency?

Not even close. We’re a full CRM and retention partner. Email is the foundation, but we also optimize your tech stack, fix broken data flows, scale SMS, improve tracking, and design customer journeys across every touchpoint.

What makes Email Kong different from other email agencies?

We don’t do templates or “30% email revenue” vanity metrics. Every strategy is built from scratch based on your business model, goals, margins, and customer behavior. And everything is done in-house - no juniors, no outsourcing.

Who will I actually work with?

You work directly with senior strategists who have built and scaled brands - not junior account managers. From strategy to execution, we stay hands-on.

Do you only work with Klaviyo?

We're a Klaviyo-certified email marketing agency - we build everything natively in the platform, though we're no strangers to the wider CRM ecosystem when the brief calls for it.

How do I know if I’m a good fit?

If you’re a DTC brand doing over $2M/year and care about retention, LTV, and owned growth - you’re in the right place. Especially if you’re tired of generic playbooks and want a partner who actually gets under the hood.

Can you just audit what I have first?

Absolutely! Our free audit reveals exactly where your setup has gaps, and what we’d do to fix it. There’s no pressure to work together right away. You’re welcome to take the insights and run with them. When you're ready to work together, we’ll be here.

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