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Exclusive Case Study

How we helped TwoPackBag turn baggage fee outrage into an email programme that sells

TwoPackBag makes a vacuum travel bag with a USB-rechargeable pump, so travellers can fit more into one carry-on and stop paying to check a bag.

We started in April 2026. TwoPackBag was growing fast and needed an email programme that could keep up: one that turned new subscribers into buyers, answered the doubts people have about a bag that sounds too good to be true, and kept sales coming all year.

Three TwoPackBag emails shown on phones
CHANNELS ACTIVATED:
Email
SMS
23.7%
attributed revenue from Klaviyo
of store revenue from email, up from 17.3%
3.9x
increase in returning customer revenue
growth in email revenue since our first 90 days
$1.38M
increase post-purchase flow revenue
in flow revenue in the last 90 days

When your product sounds like a trick, every email has to prove it works

TwoPackBag's best customers are the people who plan every family trip and refuse, on principle, to pay a baggage fee. Most have already tried packing cubes or cheap vacuum bags, so they want proof before they buy again.

We wrote like a friend who is fed up with the airlines too. Every email starts from a moment they know, from sitting on a suitcase to make it close to walking straight past baggage claim, and backs it up with something real: the 100-day money-back guarantee, the Travel + Leisure and AARP Travel awards, and reviews from people who stopped checking a bag.

TwoPackBag campaign emails: Off Season Sale, Prime Big Deal Days and Payday Flash

A full campaign calendar that mixed travel stories with well-timed sales.

We send TwoPackBag emails close to daily. Stories and how-tos, like what packing cubes get wrong and how carry-on rules really work, sit between sales timed to payday, the end of summer and Prime Big Deal Days.

That groundwork made the sales land. On the final day of Prime Big Deal Days, "Tomorrow it's FULL PRICE" made $10,553 from a single send. On the last night of the Off Season Sale, "It all ends tonight" made $10,505. And an email answering one customer's question, whether the 20% off and the $25 gift card stack, made $8,972.

Flows that turn new subscribers into first orders.

Thousands of new people join TwoPackBag's list every week, so the first emails they get matter most. We rebuilt the Welcome Series, Checkout Abandonment and Browse Abandonment flows in the same straight-talking voice as the campaigns.

Between 10 July and 7 October, the Welcome Series alone made $908,285. In the 90 days to 8 October, flow revenue reached $1,382,458, up from $351,648 in our first 90 days.

TwoPackBag flow revenue up from $351,648 to $1,382,458
TwoPackBag email share of store revenue up from 17.3% to 23.7%

Email grew from 17.3% to 23.7% of store revenue.

In our first 90 days, email made $358,225 of TwoPackBag's $2.07M in store revenue. In the 90 days to 8 October, it made $1,408,087 of $5.94M.

Store revenue nearly tripled across those two windows, and email grew faster still, rising from 17.3% to 23.7% of the total. Add SMS, and Klaviyo brought in $1,658,694, or 27.9% of everything the store sold.

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.

ready to get started?

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