For Ecom Brands Scaling Past €50K/Month
For Ecom Brands +€50K/Month
get A Free Klaviyo
Email Account Audit
Our free Klaviyo audit gives you a full breakdown of your email strategy, performance benchmarks for your industry, and a clear picture of:
☑️ What's holding your account back.
☑️ Exactly what to fix first.
What’s Included in the audit:
Our free email audit breaks down what's working, what's not, and where you're leaving revenue on the table. We'll review each area below and score them so you know exactly where to focus first.
Our free email audit breaks down what's working, what's not and where your biggest revenue opportunities are hiding.
Flows & Automations
Your flows should be selling while you sleep. We'll review your entire customer journey from abandonment to post-purchase and show you exactly where the gaps are and what to fix for maximum revenue.
Campaigns Check
Campaigns can a big percentage of your email revenue when done right. We'll look at your sending frequency, email design, segmentation, and content to see what's working and what's costing you money.
List growth & Pop-ups
Your pop-up is the front door to your entire email revenue. We'll review your offer, design, timing, and targeting and show you where you're leaving leads on the table.
Technical Check
The backend matters. We'll review attribution settings, and tracking setup to make sure your data is accurate and your emails actually render the way they should.
Inbox Deliverability
If your emails aren't hitting the inbox, nothing else matters. We'll check your sending infrastructure and flag any issues pushing you into spam or promotions.
Email Performance
We'll break down your key metrics open rate, click-through rate, spam rate, and more and give you a clear picture of how your emails are actually performing.
OUR APPROACH
Our Audit 4 Step process
Our Audit 4 Step process
Get your full Klaviyo audit report without the back-and-forth
1. Request Audit
Fill out a quick form so we know what we're working with.
2. Give us access
Give us Manager Access to your Klaviyo account so we can dig in.
Understanding your brand, audience, and goals.Our team analyzes your current email performance and crafts a data-driven strategy
2. Give us access
Give us Manager Access to your Klaviyo account so we can dig in.
3. Wait Two Days
We'll send your full audit breakdown straight to your inbox.
Understanding your brand, audience, and goals.Our team analyzes your current email performance and crafts a data-driven strategy
3. Wait Two Days
We'll send your full audit breakdown straight to your inbox.
4. Audit Call
We'll walk you through every finding and what to fix first.
Understanding your brand, audience, and goals.Our team analyzes your current email performance and crafts a data-driven strategy
4. Audit Call
We'll walk you through every finding and what to fix first.
FAQ
Got questions?
Here are the answers you're looking for
What services do you offer?
What is your pricing?
Is there a strict contract in place?
How quickly do you respond if there’s an issue?
What kind of revenue increase can I expect to see?
How much time do I need to invest myself?
Who will be responsible for my email account?
What services do you offer?
What is your pricing?
Is there a strict contract in place?
How quickly do you respond if there’s an issue?
What kind of revenue increase can I expect to see?
How much time do I need to invest myself?
Who will be responsible for my email account?
Simple Growth
Club
Your name ;)
16/05/2026
Join over 25+ founders who supercharged their email marketing
"We were already driving a lot of traffic, but email is what finally helped us unlock its full potential. The flows they built still run on auto-pilot and consistently drive conversions from smarter cart recovery to stronger follow-ups that actually support our brand. The results speak for themselves."
Danny Gruiters, Founder of Gitaar Barbaar
Our results for clients
IMPACT
What working with us did for our clients
Danny | Gitaar Barbaar
Finally getting maximum value from our existing traffic! We’ve been working together for about a year now and we’re extremely satisfied. While we already had a strong website and solid marketing in place, we noticed that our existing traffic wasn’t being used to its full potential. That’s exactly where these email flows made a huge difference. They set up multiple one-time flows for us that are still running today and continue to generate serious conversions every month from smarter cart recovery to better follow-ups and stronger content that truly supports our branding. What makes the collaboration even stronger is the speed and quality of their support. Questions and changes are handled quickly, and because they have designers in-house, everything is instantly taken to a much higher level than if you try to do it yourself. The result: more focus for us, time saved, and clearly better performance. They truly know what they’re doing, and you feel that in everything. Highly recommended."
Jordy G | Founder Pet Industry
"Excellent for me! I don’t even remember how long we’ve been working together, but the ROI was huge from the very first month! They also helped me prepare for BFCM it was my first time, so I had no experience at all. Thank you! And whenever something urgent comes up, they even launch emergency campaigns. Truly the best email marketing company I’ve found so far."
Nino | Wet van Rijkdom
"From Idea to Execution. These Guys Nail It Working with Simple Growth has been amazing for us. They’re a small boutique team, but don’t let that fool you they seriously know their stuff. From brainstorming ideas to bringing them to life, every step felt intentional and professional. Communication was always super clear, and the return on our investment? Way higher than expected. Highly recommend them."
Willem | Wellshine
"Third time’s the charm. This is our third agency for email marketing and CRO. With the first two, we left immediately after the fixed contract period because of the lack of results. With SGL, however, we’ve now been working together for more than six months!"
Aaron | Dallions
"35% Revenue Increase. We grew from online platforms to Shopify, but when we started, we had little knowledge of how to build an effective email system. SGL not only helped us strategically set up our flows, but also made sure our team had less on their plate. Today, more than 35% of our revenue comes from email, and we’re extremely happy with both the results and the support!"
Dustin | Wellshave
"Very satisfied. We’ve been working together for almost a year now, and the communication has always been pleasant and professional. The results speak for themselves, and we’re seeing great growth. We would definitely recommend them to other webshops."
Roberto | Phoenix Metaal
"Virgil helped us set up an automated email system to reach new potential customers, both locally and internationally. After several months of running the system, we can confidently say we’re very satisfied with the investment. Communication was always smooth, and there was great attention to our needs throughout the entire process. Keep up the great work!"
Danny | Gitaar Barbaar
Finally getting maximum value from our existing traffic! We’ve been working together for about a year now and we’re extremely satisfied. While we already had a strong website and solid marketing in place, we noticed that our existing traffic wasn’t being used to its full potential. That’s exactly where these email flows made a huge difference. They set up multiple one-time flows for us that are still running today and continue to generate serious conversions every month from smarter cart recovery to better follow-ups and stronger content that truly supports our branding. What makes the collaboration even stronger is the speed and quality of their support. Questions and changes are handled quickly, and because they have designers in-house, everything is instantly taken to a much higher level than if you try to do it yourself. The result: more focus for us, time saved, and clearly better performance. They truly know what they’re doing, and you feel that in everything. Highly recommended."
Jordy G | Founder Pet Industry
"Excellent for me! I don’t even remember how long we’ve been working together, but the ROI was huge from the very first month! They also helped me prepare for BFCM it was my first time, so I had no experience at all. Thank you! And whenever something urgent comes up, they even launch emergency campaigns. Truly the best email marketing company I’ve found so far."
Nino | Wet van Rijkdom
"From Idea to Execution. These Guys Nail It Working with Simple Growth has been amazing for us. They’re a small boutique team, but don’t let that fool you they seriously know their stuff. From brainstorming ideas to bringing them to life, every step felt intentional and professional. Communication was always super clear, and the return on our investment? Way higher than expected. Highly recommend them."
Willem | Wellshine
"Third time’s the charm. This is our third agency for email marketing and CRO. With the first two, we left immediately after the fixed contract period because of the lack of results. With SGL, however, we’ve now been working together for more than six months!"
Aaron | Dallions
"35% Revenue Increase. We grew from online platforms to Shopify, but when we started, we had little knowledge of how to build an effective email system. SGL not only helped us strategically set up our flows, but also made sure our team had less on their plate. Today, more than 35% of our revenue comes from email, and we’re extremely happy with both the results and the support!"
Dustin | Wellshave
"Very satisfied. We’ve been working together for almost a year now, and the communication has always been pleasant and professional. The results speak for themselves, and we’re seeing great growth. We would definitely recommend them to other webshops."
Roberto | Phoenix Metaal
"Virgil helped us set up an automated email system to reach new potential customers, both locally and internationally. After several months of running the system, we can confidently say we’re very satisfied with the investment. Communication was always smooth, and there was great attention to our needs throughout the entire process. Keep up the great work!"
Danny | Gitaar Barbaar
Finally getting maximum value from our existing traffic! We’ve been working together for about a year now and we’re extremely satisfied. While we already had a strong website and solid marketing in place, we noticed that our existing traffic wasn’t being used to its full potential. That’s exactly where these email flows made a huge difference. They set up multiple one-time flows for us that are still running today and continue to generate serious conversions every month from smarter cart recovery to better follow-ups and stronger content that truly supports our branding. What makes the collaboration even stronger is the speed and quality of their support. Questions and changes are handled quickly, and because they have designers in-house, everything is instantly taken to a much higher level than if you try to do it yourself. The result: more focus for us, time saved, and clearly better performance. They truly know what they’re doing, and you feel that in everything. Highly recommended."
Jordy G | Founder Pet Industry
"Excellent for me! I don’t even remember how long we’ve been working together, but the ROI was huge from the very first month! They also helped me prepare for BFCM it was my first time, so I had no experience at all. Thank you! And whenever something urgent comes up, they even launch emergency campaigns. Truly the best email marketing company I’ve found so far."
Nino | Wet van Rijkdom
"From Idea to Execution. These Guys Nail It Working with Simple Growth has been amazing for us. They’re a small boutique team, but don’t let that fool you they seriously know their stuff. From brainstorming ideas to bringing them to life, every step felt intentional and professional. Communication was always super clear, and the return on our investment? Way higher than expected. Highly recommend them."
Willem | Wellshine
"Third time’s the charm. This is our third agency for email marketing and CRO. With the first two, we left immediately after the fixed contract period because of the lack of results. With SGL, however, we’ve now been working together for more than six months!"
Aaron | Dallions
"35% Revenue Increase. We grew from online platforms to Shopify, but when we started, we had little knowledge of how to build an effective email system. SGL not only helped us strategically set up our flows, but also made sure our team had less on their plate. Today, more than 35% of our revenue comes from email, and we’re extremely happy with both the results and the support!"
Dustin | Wellshave
"Very satisfied. We’ve been working together for almost a year now, and the communication has always been pleasant and professional. The results speak for themselves, and we’re seeing great growth. We would definitely recommend them to other webshops."
Roberto | Phoenix Metaal
"Virgil helped us set up an automated email system to reach new potential customers, both locally and internationally. After several months of running the system, we can confidently say we’re very satisfied with the investment. Communication was always smooth, and there was great attention to our needs throughout the entire process. Keep up the great work!"
Danny | Gitaar Barbaar
Finally getting maximum value from our existing traffic! We’ve been working together for about a year now and we’re extremely satisfied. While we already had a strong website and solid marketing in place, we noticed that our existing traffic wasn’t being used to its full potential. That’s exactly where these email flows made a huge difference. They set up multiple one-time flows for us that are still running today and continue to generate serious conversions every month from smarter cart recovery to better follow-ups and stronger content that truly supports our branding. What makes the collaboration even stronger is the speed and quality of their support. Questions and changes are handled quickly, and because they have designers in-house, everything is instantly taken to a much higher level than if you try to do it yourself. The result: more focus for us, time saved, and clearly better performance. They truly know what they’re doing, and you feel that in everything. Highly recommended."
Jordy G | Founder Pet Industry
"Excellent for me! I don’t even remember how long we’ve been working together, but the ROI was huge from the very first month! They also helped me prepare for BFCM it was my first time, so I had no experience at all. Thank you! And whenever something urgent comes up, they even launch emergency campaigns. Truly the best email marketing company I’ve found so far."
Nino | Wet van Rijkdom
"From Idea to Execution. These Guys Nail It Working with Simple Growth has been amazing for us. They’re a small boutique team, but don’t let that fool you they seriously know their stuff. From brainstorming ideas to bringing them to life, every step felt intentional and professional. Communication was always super clear, and the return on our investment? Way higher than expected. Highly recommend them."
Willem | Wellshine
"Third time’s the charm. This is our third agency for email marketing and CRO. With the first two, we left immediately after the fixed contract period because of the lack of results. With SGL, however, we’ve now been working together for more than six months!"
Aaron | Dallions
"35% Revenue Increase. We grew from online platforms to Shopify, but when we started, we had little knowledge of how to build an effective email system. SGL not only helped us strategically set up our flows, but also made sure our team had less on their plate. Today, more than 35% of our revenue comes from email, and we’re extremely happy with both the results and the support!"
Dustin | Wellshave
"Very satisfied. We’ve been working together for almost a year now, and the communication has always been pleasant and professional. The results speak for themselves, and we’re seeing great growth. We would definitely recommend them to other webshops."
Roberto | Phoenix Metaal
"Virgil helped us set up an automated email system to reach new potential customers, both locally and internationally. After several months of running the system, we can confidently say we’re very satisfied with the investment. Communication was always smooth, and there was great attention to our needs throughout the entire process. Keep up the great work!"
36%+
Average Email Attribution
36%+
Average Email Attribution
36%+
Average Email Attribution
5/5
Rating on Trustpilot
5/5
Rating on Trustpilot
5/5
Rating on Trustpilot
25+
Brands we've Helped
25+
Brands we've Helped
25+
Brands we've Helped
15M+
In Email Revenue
15M+
In Email Revenue
15M+
In Email Revenue
Danny | Gitaar Barbaar
Finally getting maximum value from our existing traffic! We’ve been working together for about a year now and we’re extremely satisfied. While we already had a strong website and solid marketing in place, we noticed that our existing traffic wasn’t being used to its full potential. That’s exactly where these email flows made a huge difference. They set up multiple one-time flows for us that are still running today and continue to generate serious conversions every month from smarter cart recovery to better follow-ups and stronger content that truly supports our branding. What makes the collaboration even stronger is the speed and quality of their support. Questions and changes are handled quickly, and because they have designers in-house, everything is instantly taken to a much higher level than if you try to do it yourself. The result: more focus for us, time saved, and clearly better performance. They truly know what they’re doing, and you feel that in everything. Highly recommended."
Jordy G | Founder Pet Industry
"Excellent for me! I don’t even remember how long we’ve been working together, but the ROI was huge from the very first month! They also helped me prepare for BFCM it was my first time, so I had no experience at all. Thank you! And whenever something urgent comes up, they even launch emergency campaigns. Truly the best email marketing company I’ve found so far."
Nino | Wet van Rijkdom
"From Idea to Execution. These Guys Nail It Working with Simple Growth has been amazing for us. They’re a small boutique team, but don’t let that fool you they seriously know their stuff. From brainstorming ideas to bringing them to life, every step felt intentional and professional. Communication was always super clear, and the return on our investment? Way higher than expected. Highly recommend them."
Willem | Wellshine
"Third time’s the charm. This is our third agency for email marketing and CRO. With the first two, we left immediately after the fixed contract period because of the lack of results. With SGL, however, we’ve now been working together for more than six months!"
Aaron | Dallions
"35% Revenue Increase. We grew from online platforms to Shopify, but when we started, we had little knowledge of how to build an effective email system. SGL not only helped us strategically set up our flows, but also made sure our team had less on their plate. Today, more than 35% of our revenue comes from email, and we’re extremely happy with both the results and the support!"
Dustin | Wellshave
"Very satisfied. We’ve been working together for almost a year now, and the communication has always been pleasant and professional. The results speak for themselves, and we’re seeing great growth. We would definitely recommend them to other webshops."
Roberto | Phoenix Metaal
"Virgil helped us set up an automated email system to reach new potential customers, both locally and internationally. After several months of running the system, we can confidently say we’re very satisfied with the investment. Communication was always smooth, and there was great attention to our needs throughout the entire process. Keep up the great work!"
Danny | Gitaar Barbaar
Finally getting maximum value from our existing traffic! We’ve been working together for about a year now and we’re extremely satisfied. While we already had a strong website and solid marketing in place, we noticed that our existing traffic wasn’t being used to its full potential. That’s exactly where these email flows made a huge difference. They set up multiple one-time flows for us that are still running today and continue to generate serious conversions every month from smarter cart recovery to better follow-ups and stronger content that truly supports our branding. What makes the collaboration even stronger is the speed and quality of their support. Questions and changes are handled quickly, and because they have designers in-house, everything is instantly taken to a much higher level than if you try to do it yourself. The result: more focus for us, time saved, and clearly better performance. They truly know what they’re doing, and you feel that in everything. Highly recommended."
Jordy G | Founder Pet Industry
"Excellent for me! I don’t even remember how long we’ve been working together, but the ROI was huge from the very first month! They also helped me prepare for BFCM it was my first time, so I had no experience at all. Thank you! And whenever something urgent comes up, they even launch emergency campaigns. Truly the best email marketing company I’ve found so far."
Nino | Wet van Rijkdom
"From Idea to Execution. These Guys Nail It Working with Simple Growth has been amazing for us. They’re a small boutique team, but don’t let that fool you they seriously know their stuff. From brainstorming ideas to bringing them to life, every step felt intentional and professional. Communication was always super clear, and the return on our investment? Way higher than expected. Highly recommend them."
Willem | Wellshine
"Third time’s the charm. This is our third agency for email marketing and CRO. With the first two, we left immediately after the fixed contract period because of the lack of results. With SGL, however, we’ve now been working together for more than six months!"
Aaron | Dallions
"35% Revenue Increase. We grew from online platforms to Shopify, but when we started, we had little knowledge of how to build an effective email system. SGL not only helped us strategically set up our flows, but also made sure our team had less on their plate. Today, more than 35% of our revenue comes from email, and we’re extremely happy with both the results and the support!"
Dustin | Wellshave
"Very satisfied. We’ve been working together for almost a year now, and the communication has always been pleasant and professional. The results speak for themselves, and we’re seeing great growth. We would definitely recommend them to other webshops."
Roberto | Phoenix Metaal
"Virgil helped us set up an automated email system to reach new potential customers, both locally and internationally. After several months of running the system, we can confidently say we’re very satisfied with the investment. Communication was always smooth, and there was great attention to our needs throughout the entire process. Keep up the great work!"
Roberto | Phoenix Metaal
"Virgil helped us set up an automated email system to reach new potential customers, both locally and internationally. After several months of running the system, we can confidently say we’re very satisfied with the investment. Communication was always smooth, and there was great attention to our needs throughout the entire process. Keep up the great work!"
Dustin | Wellshave
"Very satisfied. We’ve been working together for almost a year now, and the communication has always been pleasant and professional. The results speak for themselves, and we’re seeing great growth. We would definitely recommend them to other webshops."
Aaron | Dallions
"35% Revenue Increase. We grew from online platforms to Shopify, but when we started, we had little knowledge of how to build an effective email system. SGL not only helped us strategically set up our flows, but also made sure our team had less on their plate. Today, more than 35% of our revenue comes from email, and we’re extremely happy with both the results and the support!"
Willem | Wellshine
"Third time’s the charm. This is our third agency for email marketing and CRO. With the first two, we left immediately after the fixed contract period because of the lack of results. With SGL, however, we’ve now been working together for more than six months!"
Nino | Wet van Rijkdom
"From Idea to Execution. These Guys Nail It Working with Simple Growth has been amazing for us. They’re a small boutique team, but don’t let that fool you they seriously know their stuff. From brainstorming ideas to bringing them to life, every step felt intentional and professional. Communication was always super clear, and the return on our investment? Way higher than expected. Highly recommend them."
Jordy G | Founder Pet Industry
"Excellent for me! I don’t even remember how long we’ve been working together, but the ROI was huge from the very first month! They also helped me prepare for BFCM it was my first time, so I had no experience at all. Thank you! And whenever something urgent comes up, they even launch emergency campaigns. Truly the best email marketing company I’ve found so far."
Danny | Gitaar Barbaar
Finally getting maximum value from our existing traffic! We’ve been working together for about a year now and we’re extremely satisfied. While we already had a strong website and solid marketing in place, we noticed that our existing traffic wasn’t being used to its full potential. That’s exactly where these email flows made a huge difference. They set up multiple one-time flows for us that are still running today and continue to generate serious conversions every month from smarter cart recovery to better follow-ups and stronger content that truly supports our branding. What makes the collaboration even stronger is the speed and quality of their support. Questions and changes are handled quickly, and because they have designers in-house, everything is instantly taken to a much higher level than if you try to do it yourself. The result: more focus for us, time saved, and clearly better performance. They truly know what they’re doing, and you feel that in everything. Highly recommended."
Roberto | Phoenix Metaal
"Virgil helped us set up an automated email system to reach new potential customers, both locally and internationally. After several months of running the system, we can confidently say we’re very satisfied with the investment. Communication was always smooth, and there was great attention to our needs throughout the entire process. Keep up the great work!"
Dustin | Wellshave
"Very satisfied. We’ve been working together for almost a year now, and the communication has always been pleasant and professional. The results speak for themselves, and we’re seeing great growth. We would definitely recommend them to other webshops."
Aaron | Dallions
"35% Revenue Increase. We grew from online platforms to Shopify, but when we started, we had little knowledge of how to build an effective email system. SGL not only helped us strategically set up our flows, but also made sure our team had less on their plate. Today, more than 35% of our revenue comes from email, and we’re extremely happy with both the results and the support!"
Willem | Wellshine
"Third time’s the charm. This is our third agency for email marketing and CRO. With the first two, we left immediately after the fixed contract period because of the lack of results. With SGL, however, we’ve now been working together for more than six months!"
Nino | Wet van Rijkdom
"From Idea to Execution. These Guys Nail It Working with Simple Growth has been amazing for us. They’re a small boutique team, but don’t let that fool you they seriously know their stuff. From brainstorming ideas to bringing them to life, every step felt intentional and professional. Communication was always super clear, and the return on our investment? Way higher than expected. Highly recommend them."
Jordy G | Founder Pet Industry
"Excellent for me! I don’t even remember how long we’ve been working together, but the ROI was huge from the very first month! They also helped me prepare for BFCM it was my first time, so I had no experience at all. Thank you! And whenever something urgent comes up, they even launch emergency campaigns. Truly the best email marketing company I’ve found so far."
Danny | Gitaar Barbaar
Finally getting maximum value from our existing traffic! We’ve been working together for about a year now and we’re extremely satisfied. While we already had a strong website and solid marketing in place, we noticed that our existing traffic wasn’t being used to its full potential. That’s exactly where these email flows made a huge difference. They set up multiple one-time flows for us that are still running today and continue to generate serious conversions every month from smarter cart recovery to better follow-ups and stronger content that truly supports our branding. What makes the collaboration even stronger is the speed and quality of their support. Questions and changes are handled quickly, and because they have designers in-house, everything is instantly taken to a much higher level than if you try to do it yourself. The result: more focus for us, time saved, and clearly better performance. They truly know what they’re doing, and you feel that in everything. Highly recommended."