99 Growth Agency®

0%

Average email open rate across client accounts

vs 21% industry average

£0K

Average monthly flow revenue generated

Automated, while you sleep

0

Core flows built within the first 30 days

All live and generating revenue

0d

From audit to full Klaviyo account live

Strategy, build, and launch

Results

What email actually
delivers for our clients

Rebalance Vintage
128%
Monthly recurring revenue increase
Email and paid media working in tandem. Klaviyo flows generating passive revenue while Meta Ads drive new subscriber acquisition.
Sylk
42%
Average email open rate
Full Klaviyo audit, segmentation rebuild, and deliverability overhaul. Open rate more than doubled from the previous agency's 19% baseline.
Thrift Vintage Fashion
35%
Revenue attributed to email channel
Six core flows running with campaign calendar. Email became the single highest-margin revenue channel within 60 days of launch.
United Vintage
£38K
Monthly flow revenue generated
Welcome, cart recovery, and post-purchase flows generating automated revenue monthly — on top of campaign sends.
Shedd.app
4.2×
Email ROAS vs paid acquisition cost
Email retention system built alongside CPL reduction campaign. Email consistently outperforms paid channels on revenue per contact.
Known Source
6.8%
Click-through rate on flow emails
Above the industry benchmark of 2.3%. Strong segmentation and relevant dynamic product blocks drive qualified clicks on every send.

Client Testimonials

What brands say

after working with us

4.9

4.9

/5

We’ve delivered 56+ projects that help companies generate real results.

99 Growth Agency®

56+

Trusted by

clients worldwide

Rebalance Vintage

DTC E-Commerce · Canada

"Our email was basically a broken welcome flow and a monthly newsletter nobody read. Within 30 days they had six flows live and we saw revenue from the account for the first time. The welcome series alone paid for the first two months."

Rebalance Vintage

DTC E-Commerce · Canada

"Our email was basically a broken welcome flow and a monthly newsletter nobody read. Within 30 days they had six flows live and we saw revenue from the account for the first time. The welcome series alone paid for the first two months."

Sylk

E-Commerce · UK

"The Klaviyo audit alone was worth more than we'd paid our previous agency in six months. They found three broken flows, a deliverability issue we didn't know about, and a segmentation setup that was sending to the wrong people. Fixed in week one."

Sylk

E-Commerce · UK

"The Klaviyo audit alone was worth more than we'd paid our previous agency in six months. They found three broken flows, a deliverability issue we didn't know about, and a segmentation setup that was sending to the wrong people. Fixed in week one."

Thrift Vintage Fashion

Multi-Channel · UK

"Email is now our highest-margin channel and we barely touch it. Everything runs automatically. The monthly report actually tells us what's working and what to do next — not just numbers we can't act on."

Thrift Vintage Fashion

Multi-Channel · UK

"Email is now our highest-margin channel and we barely touch it. Everything runs automatically. The monthly report actually tells us what's working and what to do next — not just numbers we can't act on."

Pricing

Transparent from day one.

No surprises, no hidden fees

Want more traffic and leads?

Get marketing and SEO that starts with your goals.

+$1,490
Your Investment
$2,490
/project
Homepage + up to 4 inner pages
Design and Development
Mobile Optimized Design
Delivery Time
3-4 weeks
Add marketing, SEO, or content creation—flexible tools to strengthen your project.
We'll shape a solution that fits your business, not ours.
George Stern
Client Success Manager

FAQ

Questions we get

every time

We already have Klaviyo set up — do you start from scratch?
icon

No. We start with a full audit of what you have. If your existing flows are working, we keep them and build on top. If they're broken or underperforming, we rebuild the specific parts that need fixing — not the whole account. We never delete anything without your approval, and we document every change we make.

How quickly will we see revenue from the flows?
icon

Most clients see flow revenue within the first 7–14 days of launch. The welcome series and abandoned cart flows typically generate the fastest returns because they trigger immediately from real-time behaviour. More complex flows like win-back and VIP take 30–60 days to build meaningful data and optimise around. By month two, you should have a clear picture of the email channel's contribution to total revenue.

What list size do I need for email marketing to be worthwhile?
icon

Flows work from day one regardless of list size — they trigger based on behaviour, not list volume. For campaigns, you need a minimum of around 500–1,000 engaged subscribers to get meaningful data. If your list is smaller, we'll build a list growth strategy alongside the flow build so the two scale together. A small, highly engaged list consistently outperforms a large, disengaged one.

Do you write the email copy or do we need to provide it?
icon

We write everything — subject lines, preview text, body copy, and CTAs. We'll ask you for brand guidelines, tone of voice references, and any product information we need, but you don't need to write a single word. For campaign emails, we'll share copy for approval before any send goes out. For flows, we build the copy into the flow itself and you review before it goes live.

Can you help grow our email list, not just manage it?
icon

Yes — list growth is part of every monthly management plan. We optimise your Klaviyo pop-up forms (timing, copy, offer, mobile UX), build lead magnet sequences where relevant, and sync your paid media campaigns to capture emails from ad traffic. We also manage the suppression and re-engagement strategy so your list stays clean as it grows.

What's the difference between email flows and campaigns?
icon

Flows are automated sequences triggered by a subscriber's behaviour — signing up, abandoning a cart, making a purchase. They run 24/7 without you doing anything. Campaigns are one-time sends to a segment of your list — product launches, sale announcements, content emails. Both are important and they compound together: flows generate baseline revenue, campaigns generate spikes around key moments.

How does email work alongside our paid ads?
icon

They're most powerful together. We sync your Klaviyo segments to Meta Custom Audiences — so your lapsed email subscribers also see your retargeting ads. When you run a campaign email, we time paid ad creative to match, so the message hits on multiple channels simultaneously. For list growth, we drive ad traffic to pop-up forms and lead magnets. The two channels referencing each other consistently outperform either one alone.

Do you manage SMS as well as email?
icon

Yes, as part of the Full Stack plan or as an add-on. We manage SMS through Klaviyo or Attentive depending on your existing setup. SMS is best used for time-sensitive sends — drop alerts, flash sales, and cart recovery nudges where a 98% open rate in 3 minutes makes a material difference. We handle compliance (TCPA/GDPR), opt-in flows, and monthly sends alongside your email calendar.

We already have Klaviyo set up — do you start from scratch?
icon

No. We start with a full audit of what you have. If your existing flows are working, we keep them and build on top. If they're broken or underperforming, we rebuild the specific parts that need fixing — not the whole account. We never delete anything without your approval, and we document every change we make.

How quickly will we see revenue from the flows?
icon

Most clients see flow revenue within the first 7–14 days of launch. The welcome series and abandoned cart flows typically generate the fastest returns because they trigger immediately from real-time behaviour. More complex flows like win-back and VIP take 30–60 days to build meaningful data and optimise around. By month two, you should have a clear picture of the email channel's contribution to total revenue.

What list size do I need for email marketing to be worthwhile?
icon

Flows work from day one regardless of list size — they trigger based on behaviour, not list volume. For campaigns, you need a minimum of around 500–1,000 engaged subscribers to get meaningful data. If your list is smaller, we'll build a list growth strategy alongside the flow build so the two scale together. A small, highly engaged list consistently outperforms a large, disengaged one.

Do you write the email copy or do we need to provide it?
icon

We write everything — subject lines, preview text, body copy, and CTAs. We'll ask you for brand guidelines, tone of voice references, and any product information we need, but you don't need to write a single word. For campaign emails, we'll share copy for approval before any send goes out. For flows, we build the copy into the flow itself and you review before it goes live.

Can you help grow our email list, not just manage it?
icon

Yes — list growth is part of every monthly management plan. We optimise your Klaviyo pop-up forms (timing, copy, offer, mobile UX), build lead magnet sequences where relevant, and sync your paid media campaigns to capture emails from ad traffic. We also manage the suppression and re-engagement strategy so your list stays clean as it grows.

What's the difference between email flows and campaigns?
icon

Flows are automated sequences triggered by a subscriber's behaviour — signing up, abandoning a cart, making a purchase. They run 24/7 without you doing anything. Campaigns are one-time sends to a segment of your list — product launches, sale announcements, content emails. Both are important and they compound together: flows generate baseline revenue, campaigns generate spikes around key moments.

How does email work alongside our paid ads?
icon

They're most powerful together. We sync your Klaviyo segments to Meta Custom Audiences — so your lapsed email subscribers also see your retargeting ads. When you run a campaign email, we time paid ad creative to match, so the message hits on multiple channels simultaneously. For list growth, we drive ad traffic to pop-up forms and lead magnets. The two channels referencing each other consistently outperform either one alone.

Do you manage SMS as well as email?
icon

Yes, as part of the Full Stack plan or as an add-on. We manage SMS through Klaviyo or Attentive depending on your existing setup. SMS is best used for time-sensitive sends — drop alerts, flash sales, and cart recovery nudges where a 98% open rate in 3 minutes makes a material difference. We handle compliance (TCPA/GDPR), opt-in flows, and monthly sends alongside your email calendar.

Let’s talk

Tell us about your project—
whether it’s a website, SEO, or marketing.

Quick response.

If you’re ready to create and collaborate, we’d love to hear from you.

Clear next steps.

After the consultation, we’ll provide a clear plan and timeline.

99 Growth Agency®

Have a project in mind?

Book a Call

Ready to scale
your brand?

Book a free 30-minute strategy call. We'll audit your current activity, identify the gaps, and tell you exactly what we'd do differently. No pitch decks. No sales scripts.

30-day rolling agreements - Direct senior team access - No lock-in contracts

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Elena
Account Manager
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Fabiana
Creative Strategist
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Ade
Founder & Head of Strategy
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