Flowium vs Magnet Monster
Short answer: Flowium is best for brands that want a US-based Klaviyo Master Elite agency. Magnet Monster is best for UK and global DTC brands that want unlimited multichannel sends on one fee. Neither Flowium nor Magnet Monster publishes prices, so you need a quote from each on the same scope.
We run Huge Win Media, a third option on this page, so we are biased. Facts about Flowium and Magnet Monster come only from their own websites and their Clutch profiles.
At a glance
| Compared on | Flowium | Magnet Monster |
|---|---|---|
| What they do | Klaviyo agency for ecommerce brands, founded by Andriy Boychuk, known for its Klaviyo education content. | Retention marketing agency for fast-growth DTC brands, with unlimited sends for one flat monthly fee. |
| Founded | 2017, by Andriy Boychuk | About 7 years of retention work, per its site |
| Based in | New York, NY | Registered in England and Wales, and in Singapore |
| Team | Not stated on a page we could verify | Not stated |
| Klaviyo partner tier | Klaviyo Master Elite (per Flowium's own content) | Klaviyo Master Elite |
| Channels | Email and SMS on Klaviyo | Email, SMS, WhatsApp, and direct mail |
| Pricing | Not published | One flat monthly fee, amount not published |
| Minimum | Not published | Not published |
| Guarantee | Not stated | Not stated |
| Track record | Not stated on a page we could verify | 300+ ecommerce brands |
| Notable clients | Not verified | Outerknown, Waterdrop, Laura Geller, Bliss, Duradry, Hey Bud |
| Clutch | 4.9/5 from 23 reviews, min project $1,000+ | Clutch profile with no reviews yet |
How they work
Flowium is a founder-led agency started by Andriy Boychuk in 2017 and known for its Klaviyo training content. It does not publish its team size or prices on a page we could verify, so you will learn its working model on a call.
Magnet Monster charges one flat monthly fee that covers unlimited emails, SMS, WhatsApp, and direct mail. It is a Klaviyo Master Elite agency and says it has worked with 300+ ecommerce brands over about 7 years.
Pricing
Flowium: Not published. Magnet Monster: One flat monthly fee, amount not published.
Neither Flowium nor Magnet Monster publishes prices, so you need a quote from each on the same scope. Prices change, so confirm on a call before you decide.
Klaviyo partner tier and channels
Flowium lists its Klaviyo status as Master Elite (per Flowium's own content). Magnet Monster lists its Klaviyo status as Master Elite.
Flowium covers email and SMS on Klaviyo. Magnet Monster covers email, SMS, WhatsApp, and direct mail.
What reviewers say
Flowium has 4.9/5 from 23 reviews, min project $1,000+ on Clutch. Points reviewers raise most often:
- "issues with account management transitions"
- "more retroactive updates to existing content"
- "occasional miscommunications regarding meeting times"
Magnet Monster: Clutch profile with no reviews yet.
Read the full reviews: Flowium on Clutch · Magnet Monster on Clutch
Who should choose which
Choose Flowium if
- You want a US-based agency working in your time zone.
- You want a Klaviyo Master Elite partner.
- You value an agency whose founder publishes a lot of Klaviyo training.
Choose Magnet Monster if
- You want email, SMS, WhatsApp, and direct mail under one flat fee.
- You are a UK brand and want an agency registered there.
- You want a Klaviyo Master Elite partner.
A third option: Huge Win Media
Huge Win Media is about a dozen people working only in Klaviyo. Each client keeps the same marketers, writers, and designers every month. Week 1 is a full audit of every flow, campaign, and segment. Week 2 rebuilds the highest-impact flows. Week 3 starts the campaign calendar. After that it runs on weekly syncs, monthly reporting, and a quarterly A/B testing roadmap.
Huge Win Media is best for established brands with no one in-house on email, ready to put $1,000 to $2,000 a month into it. Pricing: From $1,000/mo. Campaigns $100 to $200 per email by format. Flows quoted after a free audit, from $3,500. Lower rate if your team runs strategy or account management. It works only in Klaviyo, is not a Master Elite partner, and has no Clutch profile yet.
| Compared on | Flowium | Magnet Monster | Huge Win Media |
|---|---|---|---|
| Best for | Brands that want a US-based Klaviyo Master Elite agency | UK and global DTC brands that want unlimited multichannel sends on one fee | Established brands with no one in-house on email, ready to put $1,000 to $2,000 a month into it |
| Pricing | Not published | One flat monthly fee, amount not published | From $1,000/mo. Campaigns $100 to $200 per email by format. Flows quoted after a free audit, from $3,500. Lower rate if your team runs strategy or account management |
| Minimum | Not published | Not published | No minimum term on monthly plans. One-off flow builds have no ongoing commitment |
| Klaviyo tier | Klaviyo Master Elite (per Flowium's own content) | Klaviyo Master Elite | Klaviyo Partner (not Master Elite) |
| Clutch | 4.9/5 from 23 reviews, min project $1,000+ | Clutch profile with no reviews yet | No Clutch profile yet |
More comparisons
- Huge Win Media vs Flowium
- Huge Win Media vs Magnet Monster
- Flowium alternatives
- Magnet Monster alternatives
Questions
Is Flowium better than Magnet Monster?
Neither is better for everyone. Flowium is best for brands that want a US-based Klaviyo Master Elite agency. Magnet Monster is best for UK and global DTC brands that want unlimited multichannel sends on one fee.
Which is cheaper, Flowium or Magnet Monster?
Neither Flowium nor Magnet Monster publishes prices, so you need a quote from each on the same scope. Flowium: Not published. Magnet Monster: One flat monthly fee, amount not published. Checked October 2026.
Is there an alternative to Flowium and Magnet Monster?
Yes. Huge Win Media is best for established brands with no one in-house on email, ready to put $1,000 to $2,000 a month into it, with monthly plans from $1,000 and flow builds from $3,500. It works only in Klaviyo and is not a Master Elite partner.
More agency comparisons and buying guides
Sources and how this page was checked
Facts about other agencies come only from their own websites, checked October 2026. Where an agency does not publish a price or number, we say so instead of guessing. Spot something out of date? Email emma@hugewinmedia.com and we will fix it.
Sources: Flowium: 15 best Klaviyo agencies (Flowium blog) · Flowium: email marketing agency pricing (Flowium blog) · magnetmonster.com homepage · Huge Win Media pricing · About Huge Win Media · Case studies