About Mediatonic
Marketing Constultants

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Mediatonic Digital is a boutique
marketing agency providing

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Fractional

Chief Marketing Officer

(f-CMO) +

Marketing

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services for

mid-sized

businesses.

We operate at the intersection of strategy and execution for powerful marketing mixology without the traditional agency bloat.

Mediatonic Digital blue droplet

25+ Years of Digital

millennial office workers
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Founder, Fractional CMO

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Shelley Mantei

Shelley Mantei is the founder of Mediatonic Digital, a boutique consultancy delivering Fractional CMO leadership to brands ready to unlock growth. With 25+ years of experience, she helps businesses figure out what marketing they actually need – and what actually works. She is a powerhouse in SEO, brand strategy, paid media & digital transformations. Her sweet spot: strategy-led marketing frameworks, AISEO, and LLM visibility.

Through her work with clients across B2B, hospitality, SaaS, and consumer brands, Shelley combines sharp strategy with operational clarity – turning plans into execution teams can actually run with. One of the tools in her belt: a customized Brand Bot, trained on each company’s strategy and voice, to help internal teams go from generalist guessing to on-brand, AI-enabled output.

Backed by a curated network of specialists, Shelley brings the kind of high-level thinking and hands-on direction that helps brands scale smarter – without the bloat.

Scaling Brands, Smarter

Strategy Meets Execution

ROI-Driven Marketing

Espresso Martini Fueled

Shelley Mantei fractional CMO at Mediatonic Digital in Toronto
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what working with me looks like at mediatonic digital

Fractional CMO and Marketing Strategist

I help brands cut through the noise by figuring out what marketing they actually need and what truly works. Whether it’s AISEO, paid media, or messaging, I focus on what moves the needle.

01 – Strategy First stand-alone engagement

A 30–45 day engagement delivering actionable insights and a clear 90-day plan (not audits just full of observations like the other guys).
Your business doesn’t need more content or a bigger budget. You need smarter strategy. Only then can you scale.

02 – Brand Bot (Optional)

A gated, custom AI trained on your strategy, messaging, and voice so your team can execute consistently without generic AI fluff.
The tool I build is like adding half a marketer to the team – without the headcount. It transforms generalist grinders into AI-enabled integrators.

03 – Fractional CMO

I sit above execution to keep priorities, messaging, AI tools, and what actually drives revenue fully aligned. My ideal setup is when there’s at least one strong marketing doer in-house. I give them the strategy, tools, and guardrails, then we surround them with the right marketing service vendors – theirs, mine, or a mix.

04 – AISEO

In-house Mediatonic also provides SEO with an AI-lens: GEO, AISEO, LLM visibility.

What’s been your biggest marketing challenge lately? Let’s talk.

What Client Says?

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Our Testimonials

“Shelley stepped into a complex, fast-moving environment to quickly bring structure, clarity & strategic focus to our marketing. Her ability to cut through the noise, refine our messaging and implement marketing strategies that drove results was invaluable. Working with Shelley as our fractional CMO was a game-changer for Dirty Cookie.”​

Shahira Marei of dirty cookie winner on Shark Tank

Shahira Marei

Dirty Cookie & Shark Tank Winner

“I’ve never worked with an agency who checked all the boxes from planning, implementing to tracking the data and getting it all done in an organized and perfect way. From showing what your data’s story to messaging and content.”

Caylee Auge

Caylee Augé

Future Of Your Salon

"Shelley is an SEO powerhouse, but her impact
goes far beyond that. She covers key marketing functions
like technical writing, paid media, content development
& website management. Her decades of experience makes her a valuable advisor in parallel with being a strong executor to drive results."

Neel Singh tropoly idmworks

Neel Singh

Tropoly :: IDMWORKS

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