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St. Louis marketing agency for mid-market companies

Marketing you can hold to a number.
Brand, marketing, customer experience, and the systems that show what each one earns.
$500M+ in client revenue impacted · Decade+ client relationships · 16 years in business
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Awarded 10 years and running
STL SBM 2017
STL SBM 2018
STL SBM 2019
STL SBM 2020
STL SBM 2021
STL SBM 2022
STL SBM 2023
STL SBM 2024
STL SBM 2025
STL SBM 2026

Why St. Louis companies hire us

Marketing as clear as the rest of your business.

Maybe it’s replacing an agency that never showed you what worked. Maybe it’s building out marketing without hiring a department, getting reporting you can trust, or putting AI to work. We’re a St. Louis marketing agency. We’ll tell you plainly which change to make first, then our senior team carries it out and reports every result in dollars.

See the evidence →

What makes us different

Seafoam team members working together at laptops
01

You've decided something has to change. We work out what comes first, then carry it out.

02

Senior people who tell you plainly what's working and what isn't, and show you the math.

03

No jargon and no busywork. Every result is traced back to revenue and reported in dollars, not dashboards.

What our clients say

Seafoam has been handling all my CPA firm's digital marketing needs for several years now. ... The leads generated continue to increase and are now at about double from when they started.
Tom D.
Dunn CPA Firm
Their keyword optimization of the site has produced tremendous traffic and conversion growth. They are also a really friendly, knowledgable staff that is refreshingly honest.
Kara S.
Alpine Shop
Nearly everything we do with Seafoam is data driven. That helps us make decisions based in facts that deploy our resources more effectively. Our Seafoam team uses that data to stay the course, or shift focus, strategy and tactics to adapt to real-time market challenges.
John S.
SNL Painting
When meeting with leadership, the Seafoam team was always able to intelligently and clearly articulate their strategy, answer demanding questions, and provide meaningful explanations.
Haley P.
BioGaia USA