An all-round marketing account against a platform built on store data.
Choose Mailchimp if you want landing pages and a website builder next to your email, and the lower entry price of the two.
Choose Klaviyo if you run an online store and want SMS, push and product recommendations built on your store data.
Choose Brew if you want a fully agentic setup, where your AI agent drives lifecycle marketing to engage and retain customers. Brew designs every email from your brand and runs your automations agentically.
THE BROWSERCOMPANY
Brew is the third column, for teams that want an agent to design and send their email.
| Mailchimp | Klaviyo |  Brew | |
|---|---|---|---|
| Key differences | |||
| Billed on | Mailchimp: Contacts, counted once per audience | Klaviyo: Active profiles: contacts who can receive marketing | Brew: Emails sent and AI credits |
| Fully agentic | Mailchimp: Partly. Partly: AI assists with copy; your team does the work in the app | Klaviyo: Partly. Partly: Composer drafts campaigns and flows; you review and launch | Brew: Yes. Your agent designs, sends and runs automations end to end |
| Designs finished, on-brand emails | Mailchimp: No. Writes copy and subject lines; you design each email | Klaviyo: Partly. Partly: Fills sections into a template; you finish the design | Brew: Yes. Layout, copy and images from your brand, ready to send |
| Your agent takes it live | Mailchimp: No. Claude and ChatGPT connectors draft; you finish and send in Mailchimp | Klaviyo: Yes. MCP tools create and send campaigns and create flows | Brew: Yes. Sends, schedules and runs automations; OAuth and org-scoped MCP require confirmation, brand API keys do not |
| Product recommendations | Mailchimp: Yes. On every plan | Klaviyo: Yes. Personalized product recommendations | Brew: No. Not built in |
| SMS and messaging | Mailchimp: Yes. SMS as a paid add-on in the US, Canada, UK, Australia and parts of Europe | Klaviyo: Yes. SMS, WhatsApp and RCS, billed per message | Brew: No. Email only |
| Mailchimp | Klaviyo | Brew | |
|---|---|---|---|
| Creating emails | |||
| Remembers your brand for every email | Mailchimp: Partly. Partly: Brand kit takes colors and fonts from your site; logos by hand | Klaviyo: Partly. Partly: Brand library of logos, colors, fonts and voice | Brew: Yes. Brand files your agent reads every time |
| Visual editor | Mailchimp: Yes. Drag-and-drop builder with 250+ templates | Klaviyo: Yes. Drag-and-drop editor and templates | Brew: Yes. Infinite canvas, edit by hand or in chat |
| Bring the emails you already have | Mailchimp: Partly. Partly: Custom-coded templates; sending them needs Standard | Klaviyo: Yes. HTML templates, or a screenshot for Composer | Brew: Yes. HTML, MJML, React Email, Figma or a forwarded email |
| Automation | |||
| Event-triggered automations | Mailchimp: Yes. Signups, store activity and dates | Klaviyo: Yes. Store activity from over 350 integrations | Brew: Yes. Stripe, Shopify, Clerk, Supabase or your own events |
| Builds an automation from a description | Mailchimp: Partly. Partly: AI fills in pre-built flow templates, Standard and up | Klaviyo: Yes. Composer drafts flows and their messages | Brew: Yes. Emails, waits and branches together |
| Channels | |||
| Email from your own domain | Mailchimp: Partly. Partly: Marketing; transactional is a paid add-on from Standard | Klaviyo: Yes. Campaigns and flows | Brew: Yes. Marketing and transactional on every plan |
| Signup forms and pages | Mailchimp: Yes. Landing pages and a website builder | Klaviyo: Yes. Web forms | Brew: No. Email only |
| Agents and developers | |||
| MCP server for AI agents | Mailchimp: Partly. Partly: Searches the docs; a separate one for transactional email | Klaviyo: Yes. Over 260 tools, in Claude, ChatGPT, Cursor and VS Code | Brew: Yes. Every Brew tool, in Claude, ChatGPT, Cursor and Grok |
| API | Mailchimp: Yes. Marketing API and webhooks | Klaviyo: Yes. Klaviyo APIs | Brew: Yes. REST API, typed SDK and CLI |
| Pricing | |||
| Getting started | Mailchimp: Free plan: 250 contacts, 500 sends a month | Klaviyo: Free: 250 active profiles, 500 sends a month | Brew: Free trial with 500 AI credits and 1,000 sends |
| First paid plan | Mailchimp: Essentials, from $13/month for 500 contacts; no AI features | Klaviyo: $20/month for 500 profiles and 5,000 sends | Brew: Growth, $99/month: 10,000 AI credits and 50,000 sends |
| Next plan | Mailchimp: Standard, from $20/month for 500 contacts; adds AI and longer flows | Klaviyo: $100/month at 5,000 profiles: 50,000 sends | Brew: Pro, $249/month: 25,000 AI credits and 200,000 sends |
| Top plan | Mailchimp: Premium, from $350/month for 10,000 contacts: phone support and SSO | Klaviyo: Through sales; price not listed | Brew: Enterprise: custom volume and a dedicated account manager |
| Security and compliance | |||
| SOC 2 and ISO 27001 | Mailchimp: Yes. SOC 2 reports and ISO 27001 | Klaviyo: Yes. Certified | Brew: No. Not yet; security review and DPA on request |
Neither designs a finished, on-brand email. Mailchimp’s AI writes copy and subject lines; Klaviyo’s Email AI drafts sections from a template for you to finalize.
Teams that move to Brew tell us AI drafts from tools like these rarely look like their brand, so someone still redesigns them.
Both price on the size of your list, so contacts you rarely email still cost money.
At 500 contacts, Mailchimp Essentials starts at $13/month and Standard, which adds its AI features and longer flows, at $20/month. Klaviyo is $20/month for 500 active profiles and 5,000 sends, and $100/month at 5,000 profiles.
Mailchimp counts subscribed, unsubscribed and non-subscribed contacts, once per audience. Klaviyo bills active profiles, the contacts who can receive marketing.
Brew bills on emails sent and AI credits, with unlimited contacts: Growth is $99/month for 50,000 sends and 10,000 AI credits.
Brew is fully agentic: your agent designs on-brand emails, sends them and runs your automations. Unlimited contacts on every plan. OAuth and organization-scoped MCP connections ask you to confirm live sends and launches. Brand-scoped API keys can execute permitted calls without the MCP confirmation step.
Connect Claude, ChatGPT, Cursor or Grok over MCP and your agent gets every Brew tool. It designs emails from your brand, builds audiences, runs automations and schedules sends. OAuth and organization-scoped MCP connections ask you to confirm live sends and launches. Brand-scoped API keys can execute permitted calls without the MCP confirmation step.
Paste your website and Brew writes your brand into two files your agent reads for every email. Describe the email and it appears on the canvas, ready to edit by hand or in chat.
We're here to help! Feel free to schedule a call.
Can't find what you're looking for? Contact us at +1-(332)-203-2145 or support@brew.new.
Klaviyo, for most online stores: its flows and segments run on store data from over 350 integrations, and it adds SMS, WhatsApp and push. Mailchimp also has store triggers and product recommendations on every plan, next to landing pages and a website builder.
At 500 contacts Mailchimp’s Essentials plan costs less, from $13/month against Klaviyo’s $20/month, but Essentials has no AI features and allows 4 steps per flow. Both rise with the size of your list, and Mailchimp also counts unsubscribed contacts.
Klaviyo goes further: Composer drafts campaigns, flows and segments, and its MCP server can create and send campaigns. Mailchimp’s AI writes copy, subject lines and preview text on Standard and up, and its Claude and ChatGPT connectors draft campaigns for you to finish. Neither designs a finished, on-brand email; Brew does.
Brew, if you want an agent to run your email. Your agent designs finished, on-brand emails from your brand, sends them and runs your automations, with unlimited contacts on every plan. Brew is email only, so SMS, push and landing pages stay in another tool.
Yes. Connect either in Brew and save any email as a Mailchimp or Klaviyo template, ready for your campaigns and flows. Many teams design in Brew first and move their sending over later.
Brew publishes this comparison. Brew Team reviewed the linked first-party documentation. This is a documentation review, not a claim of hands-on testing of every product. Pricing and plan limits can change.
Work at Mailchimp or Klaviyo? If anything on this page is wrong or out of date, email support@brew.new and we will correct it. We want to compete on the product, not on a mistaken comparison.
Updated October 2026
