Mailchimp
Email marketing and newslettersEmail marketing from Intuit, with a free plan for under 250 contacts. A Claude connector helps plan and draft campaigns, and a separate MCP server covers Transactional email.
MCPAPI/CLI
Content
Klaviyo
Email marketing and newslettersIndependent review. IonBin has no partnership with Klaviyo and was not paid for this page. Our evaluation is our own, based on public documentation and our research. Product names are trademarks of their owners and are used for identification only. How disclosure works.
Email and SMS marketing built around customer profiles, popular with online stores. An official MCP server, remote or local, lets an AI client report on campaigns and flows and draft new campaigns.
Best for
- Online stores sending email and SMS from purchase data
- Asking an AI client for campaign and flow performance
Not for
- Sending campaigns nobody has reviewed
- Lists without marketing consent
Top use cases
- Ask an AI client how email campaigns performed over the last 30 days source ↗
- Ask which flows drive the most conversions source ↗
- Draft a promotional campaign for review in Klaviyo source ↗
In depth
MCP server
Klaviyo documents a remote-hosted MCP server (its recommended option) and a local one. The tool list marks which tools are read-only and which handle user-generated content. Example prompts cover campaign performance, flow conversions and creating a campaign. source ↗
Free plan
The free plan covers up to 250 active profiles and 500 email sends a month, with $5 of mobile messages and $5 of Composer usage. Paid tiers are priced by profile count on the calculator. Checked 2026-10-18. source ↗
How to use it with AI
How Klaviyo connects to each AI platform: native connector or MCP, API through code the agent writes, browser control, or file upload.
| Platform | MCP / connector | API (agent-written code) | Browser | Upload / export |
|---|---|---|---|---|
| Claude (incl. Claude Code) | Not documented Named as an example MCP client. A named plugin, skill or CLI does not by itself establish an MCP/native connector pairing. Verify the route and client setup. Klaviyo named integration docs ↗Claude (incl. Claude Code) MCP docs ↗ | Not documented Claude (incl. Claude Code): Claude Code edits files and runs commands Klaviyo publishes an API, but this pairing still needs network, authentication and execution-scope checks. Klaviyo API ↗Claude (incl. Claude Code) docs ↗ | Inferred Claude Code with the Claude in Chrome extension (Chrome, Edge and other Chromium browsers). Klaviyo is a web app; the pairing itself is not documented. Claude (incl. Claude Code) browser docs ↗ | Not documented Verify which side exports and which imports, supported formats and permissions. Klaviyo's recorded upload/import status is to-verify; Claude (incl. Claude Code)'s file status is yes. These flags do not establish a file-transfer route. Claude (incl. Claude Code) file docs ↗ |
| OpenAI Codex | Not documented Klaviyo has an official MCP server and OpenAI Codex supports MCP, but Klaviyo's docs don't name this pairing. Auth setup may differ. Klaviyo MCP docs ↗OpenAI Codex MCP docs ↗ | Not documented OpenAI Codex: Edits files and runs commands locally; cloud tasks run in isolated workspaces Klaviyo publishes an API, but this pairing still needs network, authentication and execution-scope checks. Klaviyo API ↗OpenAI Codex docs ↗ | Inferred Only in the ChatGPT desktop app; not in the Codex CLI or IDE extension. Klaviyo is a web app; the pairing itself is not documented. OpenAI Codex browser docs ↗ | Not documented Verify which side exports and which imports, supported formats and permissions. Klaviyo's recorded upload/import status is to-verify; OpenAI Codex's file status is yes. These flags do not establish a file-transfer route. OpenAI Codex file docs ↗ |
| Google Antigravity | Not documented Klaviyo has an official MCP server and Google Antigravity supports MCP, but Klaviyo's docs don't name this pairing. Auth setup may differ. Klaviyo MCP docs ↗Google Antigravity MCP docs ↗ | Not documented Google Antigravity: Agents edit code and run tasks Klaviyo publishes an API, but this pairing still needs network, authentication and execution-scope checks. Klaviyo API ↗Google Antigravity docs ↗ | Inferred The /browser guide documents App and CLI support through Chrome DevTools MCP; the overview comparison conflicts on CLI availability. IDE browser features are separate. Klaviyo is a web app; the pairing itself is not documented. Google Antigravity browser docs ↗ | Not documented Verify which side exports and which imports, supported formats and permissions. Klaviyo's recorded upload/import status is to-verify; Google Antigravity's file status is yes. These flags do not establish a file-transfer route. Google Antigravity file docs ↗ |
Confirmed is reserved for evidence of the specific connection route. The current named integrations include plugins, skills and CLIs, so a named platform alone does not confirm MCP or a native connector. Inferred means each side documents a relevant capability, but no document describes the pairing. Code execution still needs network and credential access; file handling still needs a compatible format and transfer direction. Not documented means the records do not establish the route. IonBin has not tested these pairings. Recorded Oct 18, 2026.
Agent compatibility
MCPAPI/CLI File import?
| Level | Status | Detail / source |
|---|---|---|
| Native connector / MCP | Yes | Official docs ↗ |
| API / CLI | Yes | Official docs ↗ — the MCP server sits on Klaviyo's public API |
| Browser / manual | No | Browser access is recorded alongside a documented programmatic route. |
| File upload / import | To verify | Profile import not reviewed for this page |
Recorded Oct 18, 2026. Setup and plan limits vary; check the vendor's docs. How levels are assigned.
Appears in these proposed stacks
Connection capabilities to compare
An official MCP server is documented for this tool. These platforms separately document MCP client support: ChatGPT, Claude, Cursor, Gemini (Google), Google Antigravity, Grok, Grok Bot, Lindy, LM Studio, Mistral Vibe, OpenAI Codex. This inventory does not establish compatible transport, authentication or actions for a pairing. Check the connection matrix and linked sources.
Automation hubs to assess for a custom API connection: Gumloop, Make, n8n, Zapier. Verify credentials, supported requests, limits and error handling; no configured integration is implied.
Workflows using this tool
- Review last week's Klaviyo campaigns and flows with an AI client
- Draft a Klaviyo email campaign with an AI client, then review it before sending
Review
No long-form review yet. Verdict is based on research, not hands-on testing.
Alternatives
Brevo
Email marketing and newslettersEmail, SMS and a light CRM in one account. The free plan sends up to 300 emails a day, and paid plans list MCP access for ChatGPT and Claude to manage campaigns, contacts and deals.
MCPAPI/CLI
Content
Kit (formerly ConvertKit)
Email marketing and newslettersEmail marketing for creators, with automations, landing pages and digital product sales. Kit lists MCP access from the Creator plan. Use explicit review before sending broadcasts, deleting subscribers or importing data that may trigger sequences.
MCPAPI/CLIFile import
Content