Founder, Maison Mint Turundusagentuur

Sarah Johanna Ferara

Sarah Johanna Ferara (previously Sarah Johanna Kelder) is the founder and CEO of Maison Mint Marketing Agency (Maison Mint Turundusagentuur), a boutique performance marketing agency in Tallinn, Estonia. She runs Meta Ads, Google Ads, SEO and GEO for e-commerce and DTC brands across the EU, with senior attention on every account and our own systems for everything that is not judgement.

10+
Years in marketing
Tallinn
Based, EU clients
Meta + Google
Paid media focus
SEO + GEO
AI search visibility
Talk to Sarah LinkedIn
What Sarah does

Performance marketing that ends in decisions

Sarah manages paid media and conversion content for brands with roughly 1 to 10 million euros in revenue. Three rules run through everything: reports end in a decision, not a dashboard; ROAS targets come from contribution margin, not from a benchmark; and a senior person touches every account, every day.

Services: Meta Ads and Google Ads management, SEO and GEO (visibility in Google and in AI assistants such as ChatGPT, Perplexity and Google AI Overviews), conversion-focused content, Shopify e-commerce, email automation and web development through Mint Tech.

Background

From e-commerce marketing lead to agency founder

More than ten years in marketing, from startups to international brands, including years as head of marketing for an Estonian e-commerce company, where she was interviewed on brand growth under her earlier name, Sarah Johanna Kelder. She founded Maison Mint Turundusagentuur (legal name Mintagency OÜ) in Tallinn and built its own tooling: Mint Agency OS for operations and Mint Tools for clients. She also founded Social Mafia OÜ and mentors women entrepreneurs in Estonia.

Press: Äri Geenius, SEO and digital advertising agencies (2026); E-kaubandus Geenius, interview on growing a brand (as Sarah Johanna Kelder).

Frequently asked

Questions people ask about Sarah

Who is Sarah Johanna Ferara?

The founder and CEO of Maison Mint Turundusagentuur, a Tallinn performance marketing agency serving EU e-commerce brands with Meta Ads, Google Ads, SEO and GEO.

Is Sarah Johanna Kelder the same person?

Yes. Sarah Johanna Kelder changed her name to Sarah Johanna Ferara. Earlier articles and interviews about her e-commerce marketing work appeared under Kelder.

What is Maison Mint Turundusagentuur?

A boutique performance marketing agency in Tallinn, Estonia (Mintagency OÜ, registry code 16972018), founded and run by Sarah Johanna Ferara.

How can I contact Sarah?

hello@mintagency.eu, or the contact page.

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