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Engage Commerce Thermos

How Thermos turned Black Friday into an 11x ROI in a matter of weeks

11x+ROI over the Black Friday period
WeeksFrom underperforming to record-breaking
RecordsBroken through BFCM, Christmas and into 2025
Thermos Early Black Friday email: black and stainless flasks on a brick ledge over a 20% off sitewide offer panel
Thermos final hours email: a walker outdoors at dusk over an eight hours left urgency panel
Thermos product match email: the full flask and tumbler line up on red, then segmented cards for coffee drinkers, meal preppers and everyday hydration
Thermos Cyber Monday email: two walkers on a rock holding pink and purple flasks above a save 20% panel
Thermos welcome flow reminder: a gloved hand holding a black flask in snow above a 10% off code panel

Peak season was weeks away. The email wasn't ready. So we rebuilt the designs, the flows and the deliverability in Klaviyo before the first Black Friday send went out.

The Challenge

Weeks to go, everything to fix

Thermos is an iconic name in insulated drinkware and homeware, with a loyal customer base and a reputation to match. But the email programme wasn't ready for the most important trading window of the year.

Outdated designs. Poor deliverability. Under-optimised customer flows, weeks out from the year's biggest surge in demand: the demand was coming either way, and the email couldn't catch it.

Thermos Black Friday email: three tumblers and a travel mug under a Get 20% off Thermos Essentials headline
Our Solution

A four-part sprint in Klaviyo

Bold seasonal creative, clear offers, urgency in every send. Early-access Black Friday, through Cyber Monday, out to the Christmas delivery cut-offs.

Everything shipped before the first Black Friday send. No rebuild programme, no six-month roadmap. Just the highest-leverage fixes, in the weeks that mattered most.

  • Email redesign

    Fresh templates in the Thermos brand identity, made to sell through the noise of a BFCM inbox.

  • Flow optimisation

    We restructured the core flows: a Welcome Series to land the first impression, Abandoned Cart reminders to win back the lost sales, Post-Purchase follow-ups to keep people coming back.

  • Deliverability improvement

    Authentication done properly, compliance done by the book, so the sends that had to earn actually reached the inbox.

  • Targeted campaigns

    Klaviyo segmentation doing the sorting: the right offer, to the right customer, at the right moment.

Thermos welcome flow email: a navy flask and food jar on a workbench under a Welcome to Thermos headline, with the brand's own first purchase offer below
The Outcome

Over 11x ROI during the Black Friday period

Over 11x return on investment during the Black Friday period. That's on redesigned templates and personalised content, shipped in the weeks before the peak.

11x+ROI over the Black Friday period
WeeksFrom underperforming to record-breaking
RecordsBroken through BFCM, Christmas and into 2025
What's Next

The work carried on past the peak

The records kept falling through Christmas, the New Year and into 2025.

We're still working with Thermos on the email programme. Refining what's already running, not rebuilding it.

BFCM period
Christmas
New Year
Into 2025
In their words

Working with Engage Commerce has been a game-changer for our business, far exceeding our initial expectations.

Their strategic approach to understand our brand, image, and our industry meant their email marketing efforts significantly boosted our sales in record time, with results that speak for themselves.

We've seen record breaking months over the BFCM period, through to Christmas and the New Year, and now into 2025.

I can confidently recommend the team at Engage Commerce to any brand that seriously wants to capitalise on the D2C market.

James Sheldon
Head of Product and Marketing, Thermos UK
End of report
Engage Commerce Thermos

Every figure here comes straight out of the client's own account, over the period stated beside it. We don't model, blend or annualise anything.

Report
Thermos BFCM Email Marketing Case Study
Edition
Case Study · BFCM 2024
Client
Thermos
Issued by
Engage Commerce, official Klaviyo and Shopify partner
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