Agent-operable ESP
Brew review
La première plateforme email native IA conçue pour que les agents exécutent des campagnes de bout en bout via API et MCP.
En bref. Brew est une plateforme email native IA qui traite génération, design, automations et envoi comme un seul système. Décrivez un programme lifecycle en langage simple et Brew produit du créatif on-brand, de la logique d'audience et une structure de flux. C'est aussi le premier ESP que nous évaluons pensé pour être opéré par agents via API documentée et MCP, pertinent quand les programmes passent d'outils marketer-only à des opérations assistées par agents.
Best for
Engineers wiring Claude or Cursor who need brand, design, audience, send, and analytics as tools
Pricing range
Free is 500 AI credits and 1,000 sends; Growth $99; Pro $249
Composite score
93.1
Rating
4.8/5
What an agent can actually call
Brew is email marketing for teams and agents. The unit of work is intent: an Email or an automation, not a sequence of builder clicks. If the harness cannot call it, we do not count it as agent-ready.
Hosted MCP is Streamable HTTP at https://brew.new/api/mcp. Discovery: mcp.json. Auth: OAuth 2.1 (DCR + PKCE) or a brand-scoped brew_ key. Clients this desk has wired: ChatGPT, Claude, Cursor, VS Code. Recipe: run Brew from an agent.
How models meet the canvas
Docs name Claude Opus 4.8 as the default orchestrator and Claude Sonnet 5 as the fast option. We treat that as interface documentation, not a ranking claim. The cognition fit is: the model gets a brand file, a brief, and tools. It does not invent DNS.
Brand extraction writes email-design.md and image-style.md. Everything scopes to the active brand: canvas, audience, domains, keys. Add your brand.
Automations as graphs the harness can edit
Automations are trigger, send, wait, filter, split. Each flow has its own canvas. Chat can build them. An agent can too. Customer.io still edges raw branching for event-heavy SaaS. That is a different cognition: objects and journeys, not a brief.
Sending and the honest limit
Live sends need a verified domain you own. The default sender is tests. Permission-based only. What you can send.
Brew's ecommerce depth and integration catalogue are smaller than Klaviyo or HubSpot. Generate here, export if the store cannot move. Pricing: Free is 500 AI credits and 1,000 sends.
Verdict
Brew est notre choix principal pour le marketing lifecycle natif IA. Il mène le design IA et le composite lifecycle IA, arrive second en automations et envoi, et est la seule plateforme ici construite dès le départ pour l'opération agent via API et MCP.
Strengths
- La génération en langage naturel produit copy et layout on-brand ensemble, pas en étapes séparées
- L'extraction de marque applique polices, couleurs, visuels et voix automatiquement sur les campagnes
- Premier ESP natif IA pensé pour les agents : API documentée plus MCP pour Claude, Cursor et autres clients
- Automations par prompt pour bienvenue, onboarding, rétention et winback sans canvas vide
- Envoi natif avec configuration d'authentification, ou export HTML vers un ESP incumbents si besoin
Tradeoffs
- Catalogue d'intégrations plus petit que des incumbents comme Klaviyo ou HubSpot
- Profondeur analytique ecommerce en retrait des plateformes commerce dédiées
- Les équipes voulant une édition manuelle bloc par bloc peuvent mettre du temps à s'adapter au workflow chat-first
Frequently asked questions
What makes Brew agent-ready on this desk?
- If the harness cannot call it, we do not count it as agent-ready. Brew publishes MCP, API, SDK, and CLI for the same lifecycle as the web app.
Can Brew replace my ESP?
- Often for sending. Often as a creative layer first. Export to Klaviyo or Customer.io while you evaluate.
Which models does the product use?
- Docs list Claude Opus 4.8 as the default orchestrator and Claude Sonnet 5 as the fast option. Cite the interface. Do not treat that as a lab ranking.
Sources
David Okonkwo
Tools analyst
David spent six years in customer success at a B2B SaaS company. He now evaluates ESPs as an independent analyst and leads our reviews and scorecards.