Underground Ecom Reviews 39

TrustScore 4 out of 5

4.0

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Rated 1 out of 5 stars
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Its DISGUSTING at how they spam people looking for business. They claim to have won an award and I wonder if the people who gave them the award know how unethically they behave. I keep receiving un... See more

Rated 5 out of 5 stars

We've been working with Underground Ecom for a year now, and we're very pleased with the experience so far! They've reviewed our flows, enhanced the pop-up experience, implemented new strategies... See more

Company replied

Rated 5 out of 5 stars

We've tried several similar Companies who all tended to have the same bad habit... Set up our flows and campaigns and then just sit back. Underground are not like that. They constantly monitor all KPI... See more

Rated 5 out of 5 stars

As a small business owner, we have been reached out to by MANY companies trying to sell their services and charge an arm and a leg for services we didn't need or that were not tailored to our business... See more

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Company details

  1. Marketing Agency

Written by the company

We help brands to build highly profitable relationships with their audience by using tried and tested, data driven email marketing strategies that helps to drive serious increases in their revenue. We’re obsessed with success, and we work with an all hands on deck approach to deliver excellence as standard. We never make excuses - we’ll do what needs to be done to get results. We work with partners, not clients; and we put our partners first.


Contact info

4.0

Great

TrustScore 4 out of 5

39 reviews

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Hasn’t replied to negative reviews


Rated 1 out of 5 stars
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Disgusting Ethics

Its DISGUSTING at how they spam people looking for business. They claim to have won an award and I wonder if the people who gave them the award know how unethically they behave.

I keep receiving unsolicited email with no opt out from Matthew Young. I will be reporting them to Klaviyo too

October 20, 2025
Unprompted review
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Rated 5 out of 5 stars

Best agency we've worked with

Underground Ecom are genuinely the best agency we have worked with. Their email campaigns have grown our website sales 138% YTD compared to last year. All of their emails are beautifully designed and the content is brilliant. I couldn't recommend them enough.

July 1, 2025
Unprompted review
Rated 5 out of 5 stars

5 stars and highly recommend them!

I was a client of underground ecom from one month before launching my business until I sold it, five years later. In this five years, I worked with three teams and I have nothing but great things to say about the quality of their work and the quality of their people.

June 25, 2025
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Rated 5 out of 5 stars
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We've been using UE's service for more…

We've been using UE's service for more than a year now and that saved us so much time! As an ecom business owner, I am super glad that having a trustworthy partner take care of the most important email marketing!

November 25, 2024
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Reply from Underground Ecom

Thank you for your feedback Xim- let's keep growing together!

Rated 5 out of 5 stars

The best at what they do!

We have only been working with Underground Ecom for 2 months now, but so far we have already seen massive success and a huge uplift in conversions from email marketing compared to when we managed it in house.

We would recommend Underground Ecom to everyone looking to improve their email marketing efforts. Thank you to the team!

November 21, 2024
Unprompted review
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Reply from Underground Ecom

We're so pleased to hear you're off to a great start Ollie, here's to a great 2025!

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Rated 5 out of 5 stars
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Working with the team at Underground…

Working with the team at Underground continues to be a fantastic experience! They do a great job of sharing innovative ideas and integrating them effectively into flows, campaigns, etc. The team also does a great job of communicating with exceptional clarity.

November 19, 2024
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Reply from Underground Ecom

Thanks for this feedback David!

Rated 5 out of 5 stars
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I am a customer of UE for the last 4…

I am a customer of UE for the last 4 going on 5 years and it's been a great decision for our ecom business! I highly recommend them.

November 18, 2024
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Reply from Underground Ecom

We are pleased to hear this feedback. Long may our partnership continue!

Rated 5 out of 5 stars
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They do an exceptional job for us

We have been very impressed with the work the team at UE has provided for us. Of all the agencies our marketing team works with, they are the best! They do their job at a high level and pay attention to the little things.

November 18, 2024
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Reply from Underground Ecom

Thank you for your feedback Todd. We love to hear this!

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Rated 5 out of 5 stars

1 great year with UE

We've been working with Underground Ecom for a year now, and we're very pleased with the experience so far! They've reviewed our flows, enhanced the pop-up experience, implemented new strategies, and much more.

The team is highly skilled and feels like an extension of our internal team. They're not only ready to listen but also willing to challenge our ideas when needed (which we find incredibly valuable!).

In terms of content, there are still a few areas for improvement, which is completely normal. They are always open to revisions and receptive to our needs.

We highly recommend working with them!

November 14, 2024
Unprompted review
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Reply from Underground Ecom

Thank you Luiza!

Rated 5 out of 5 stars

Highly recommend!

We couldn’t be happier with our UE! We’ve been working with them for a little over a year, and the experience has been amazing. The team — Mike, Andrej, Teodora, and Radmila — is super responsive, friendly, and a joy to collaborate with. They consistently meet deadlines, and we are ahead of schedule with our email content. The strategic campaigns and flows within Klaviyo have significantly boosted our revenue.

In the beginning, I wasn’t thrilled with the email designs as they felt a bit standard, and there was a lot of QA needed due to the team getting up to speed with our industry. Now, the quality has improved tremendously, and most campaigns go live without needing any QA. The entire team brings fresh ideas and consistently pushes the envelope, making a huge impact on our marketing efforts. Highly recommend!

November 13, 2024
Unprompted review
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Reply from Underground Ecom

Great to hear this feedback Carolyn!

Rated 1 out of 5 stars

We used Underground Ecom for 3 months…

We used Underground Ecom for 3 months (they were recommended to us by an ad agency we were talking to) and, just to provide an alternative view to the reviews here, didn't have a great experience. The sales process was very slick. As agencies go, UE are very expensive - we were paying almost £4k a month for email management - but we took the view that they were reassuringly expensive, and believed the spiel about them being able to increase our email revenue significantly. For background, we are an ecom brand, already using Klaviyo, with email flows set up which were netting about 15-20% of our revenue. Clearly, if you are paying £4k to someone to take on email management, you expect a fairly significant return. In addition, we expected UE to take us up the curve on email design, and to employ some of the (admittedly very good) design skills that they showed us during the sales pitch. Some observations:

1) The sales team all appear to be based in the UK. All our work was offshored - our designer was based in Brazil, the rest of the team in South Africa. I don't recognise any of the names referred to in the reviews here. Offshoring is fine, but I sort of expected a London based team from the sales process.
2) Their design skills were not great. They basically took our existing emails, added a few images from our stock collection (many of which were some of the least attractive that they could have chosen) and left it at that. At the start, they were just using the standard Klaviyo blocks, rather than image based emails, meaning that we were far from acheiving the look that we wanted. In short, the designs were little more than we could have done ourselves. We really pushed on this, and to be fair they did respond to our feedback, but having acheived one really good design they slipped back into old ways (I suspect because the issue was escalated to head office, considered fixed and then handed back to the original designer). Due to our business model, we have a lot of products and do not do individual photo shoots - we have stock images some of which aren't great, but any competent designer should be able to make more of them, using the numerous design tools (including AI) that are available to anyone these days. If your experience is anything like ours, and you are looking to heighten the look and feel of your emails, you'd be better off getting yourself a Canva account and doing it yourself (which is what we are now doing).
3) Their merchandising skills were not good - thinking about products a customer might actually want to buy. All of our flows done by UE have the same product suggestion blocks showing the same products over and over again. In a welcome flow with 4 emails, why suggest the same products over and over again? Could they just not be bothered?
4) They made a big thing about their email calendar, but it often did not make sense. For example, we were very disappointed to find they sent an email asking people to buy stuff in preparation for Glastonbury on the Saturday of the festival itself. What exactly is the point of that?
5) Similarly, we had a real issue with delivery and proofing. Designs were delivered, usually, a couple of hours before they were due to be sent. As noted above, they were often not suitable and so we were left with a choice between making comments and jeapordising delivery or just releasing stuff we didn't really like. It felt, to be honest, that our account was a side of desk job, or perhaps we just didn't get the 'A' team
6) There are alot of account managers. You'll be asked to sign up for a 3 month initial term. We raised our concerns clearly before the start of our second month. We had several calls with our account manager, agreed improvement steps. When we reached the end of month 3 and we'd had enough and called time on the relationship, the account manager had the cheek to try to say that we hadn't provided "written" notice (nothwithstanding the numerous emails and discussions relating to our dissatisfaction) and attempted to stop us from leaving. They clearly are a maximise sign up and minimise churn agency.

All in all we were left feeling a bit duped, and annoyed that we had effectively wasted £12k that we could ill afford at that time.

UE seem to think that they can charge their fee and sit in your existing email revenue stream without producing the transformative results that they promise. I would suggest that they are charging too much for their services, although given the 10+ people that they added to our Klaviyo account (many of who we never interacted with) there are clearly alot of mouths to feed.

All in all, it was a very disappointing experience, and we would not recommend them, unless you have enough revenue that the (limited) convenience factor outweighs the cost, but be prepared for an at best mediocre experience.

August 31, 2024
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Rated 5 out of 5 stars

Great Service!

Working with Mike and the team was an awesome experience. In an industry known for empty promises, they stand out by exceeding expectations. Their team not only delivers expert email marketing but also partners closely to ensure your success.

What sets UE apart is their exceptional people. Mike and the team impressed with their clear communication, transparency, and unwavering commitment to our success.

Thanks, Mike and the whole team, for redefining professionalism and excellence in client care. It's been a pleasure working with you!

August 28, 2023
Unprompted review
Rated 5 out of 5 stars

Great Service

We worked with UE to setup core flows, all lists/segments, and manage our campaigns. Very happy with the team, Mike & Radmila, always went above and beyond to help.

August 16, 2023
Unprompted review
Rated 5 out of 5 stars

Exceptional Email and SMS Strategy Partner!

We have been using Underground Email Services for a while now, and I am incredibly impressed with their comprehensive approach to email and SMS strategy. From seamless sending to detailed reporting and audience list management, they have exceeded all my expectations.

Underground Email Services have proven themselves as an indispensable partner in our marketing efforts. Their expert team understands the nuances of crafting compelling email and SMS campaigns that truly resonate with our audience. We've seen a remarkable improvement in engagement since we started working with them.

Their sending process is seamless and reliable. Whether it's time-sensitive promotions or scheduled newsletters, Underground Email Services ensures that our messages are delivered promptly and efficiently. The fact that we can trust them to handle our communications effectively has been a game-changer for our business.

One of the standout features is their robust reporting system. They provide in-depth analytics that allow us to monitor the performance of each campaign. This level of transparency helps us make data-driven decisions and refine our strategies for better results. The insights provided by Underground Email Services have been instrumental in optimizing our outreach efforts.

Maintaining a healthy and growing audience list is crucial for our business, and Underground Email Services excels in this area as well. They employ effective list management techniques, including regular cleaning and segmentation, to ensure that our audience is engaged and relevant. This proactive approach has significantly contributed to our list's health and growth.

Furthermore, their dedication to customer support is commendable. Whenever we have questions or need assistance, their responsive and knowledgeable team is always there to help. It's clear that they genuinely care about our success and go the extra mile to ensure our satisfaction.

August 7, 2023
Unprompted review
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Reply from Underground Ecom

Thank you Henrik!

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Rated 5 out of 5 stars

Excellent experience and service

Underground Ecom is everything I had hoped for but almost didn't believe was possible in a marketing agency: responsive, friendly, flexible, diligent, creative, proactive, accountable. It's unbelievably enough been enjoyable to work with them, and that has a LOT to do with the account managers we've had, who have really been advocates for us and worked diligently to improve our email program.

August 4, 2023
Unprompted review
Rated 5 out of 5 stars

Mike is the man!

I must admit, I approached Underground Ecom with a healthy dose of skepticism. In a world filled with grand claims and empty promises, it's rare to find a company that truly lives up to its word. But let me tell you, actions indeed speak louder than words, and Mihajlo and the team at Underground Ecom have completely won me over.

From the moment I engaged with them, it was evident that this was a company that takes its commitment seriously. Mihajlo's dedication and passion for what they do are simply outstanding. Not only are they experts in their field, but they also have a genuine desire to see their clients succeed.

What truly sets Underground Ecom apart is the people. Working with Mihajlo has been an absolute delight. Their communication, transparency, and willingness to go the extra mile make them not just a great company, but incredible partners as well.

I'm thrilled to say that my initial skepticism has been completely shattered. Underground Ecom has proven time and again that they are a force to be reckoned with. If you're searching for a company that delivers exceptional results and treats you like family, look no further than Underground Ecom.

Thank you, Mihajlo and the Underground Ecom team, for showing me that true professionalism, integrity, and genuine care for clients still exist. It's been an absolute pleasure working with you.

Love Adam The Discount Dragon

August 2, 2023
Unprompted review
Rated 5 out of 5 stars

Professional email marketing for months

UE is extremely professional, we have been clients for months and feel well taken care of. We have achieved great numbers with the help of UE and have been able to take our brand to the next level. The regular calls are extremely useful, plus it's fun to talk to the participants. Aleks and Vanja have become very close to our hearts! Overall, we are very satisfied and can only recommend it!

July 31, 2023
Unprompted review

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