Retain Marketing Agency review
UK Shopify and DTC email-retention boutique with Klaviyo certification and a clear revenue-oriented lifecycle proposition.
No published price we can link to. We do not estimate one — ask on the call, and see the pricing-transparency line in the scores below.
Verdict
Retain Marketing Agency is a discovery-stage strong fit for smaller Shopify and DTC brands that want focused Klaviyo lifecycle support. The specialist positioning is clear, but the strongest public revenue claim comes from its partner listing and independent review depth is thin. Start with an audit or short pilot and verify account ownership, deliverability, attribution, references, and contract terms.
What we verified
Each claim below was checked against a named source, last on 2026-07-24. Follow any of them and check for yourself — that is the point of publishing them.
- Klaviyo lists Retain Marketing Agency as a certified partner focused on Shopify and DTC email retention. connect.klaviyo.com ↗
- The partner profile claims its email programs can contribute 35% of client revenue; this is vendor-stated and requires attribution validation. connect.klaviyo.com ↗
What other platforms say
Clear specialist fit but insufficient independent review and outcome evidence for high confidence.
These are other platforms' numbers, not ours. We report them because they are part of the picture, and we do not average them into our score — our score comes from the published rubric above.
Red flags
- Thin independent evidence
- Revenue claim is vendor-stated
- Narrow Klaviyo and Shopify focus
How it scored
Lifecycle strategy and flows
Lifecycle and retention for Shopify brands are the core proposition.
Revenue and retention measurement (not opens)
Klaviyo listing claims meaningful email-attributed revenue contribution.
Deliverability and list health
Lifecycle work implies list management, but public technical detail is limited.
Platform depth (Klaviyo / Iterable / Braze / HubSpot)
Certified Klaviyo partner with Shopify focus.
Copy and design quality
Boutique execution includes campaign and flow creative.
Vertical and stage fit
Clear Shopify, ecommerce, and DTC specialization.
Contract and pricing transparency
Boutique positioning suggests accessible engagement, but current terms are not public.
What we could not verify
- Independent client references
- Deliverability and list-health process
- Pricing, account ownership, and cancellation terms
Sources
- https://www.retainmarketing.agency/
- https://www.retainmarketing.agency/landing-page
- https://connect.klaviyo.com/partner/retain-marketing-agency
This agency has not published a paid trial. What a paid trial is.
Others we evaluated in Email / Lifecycle
Same rubric, same evaluator, same date range — so these are directly comparable to the verdict above.
See all 23 Email / Lifecycle agencies we evaluated →