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EmailOctopus API and MCP server

EmailOctopus has no API for creating, scheduling or sending campaigns, or for segments. Sign in to EmailOctopus once in your own Cloud Browser, and your AI agent does the work there for you. The same tools work over MCP for agents and as a REST API for scripts.

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Not affiliated with EmailOctopus.

EmailOctopus has no API for this. So we run one for you.

EmailOctopus's own API, a GitHub MCP server and Cotlet compared
What you need EmailOctopus's APIGitHub MCP serverCotlet
Campaigns, scheduling, segments, sending No Partly Yes, 14 tools
Acts as you, signed in 24/7 No No Yes, Cloud Browser
Fixed for you when EmailOctopus changes N/A No Yes, tested every 6h
Runs with your laptop off N/A No Yes, hosted

Checked Oct 20, 2026. Sources: EmailOctopus API v2 documentation · EmailOctopus Help: API limits · EmailOctopus Help: Using Zapier to integrate with other web services · EmailOctopus Help: Using Make to integrate with other web services

Your own Cloud Browser, on 24/7. Sign in once. We keep it connected.

  1. 01Sign in to EmailOctopus in your own Cloud Browser

  2. 02Connect it for your agents

  3. 03Cotlet keeps it signed in and working

How do I connect EmailOctopus to Claude, ChatGPT or my code?

AI agents connect over MCP, scripts call the REST API. Both reach the same 14 tools with one API key.

For AI agents: MCP

Add Cotlet to your agent once. EmailOctopus and every other app you connect show up as its tools.

  • Claude
  • ChatGPT
  • OpenClaw
  • Hermes
  • GrokBot
  • Cursor
  • n8n
  • Any MCP client
  1. 1

    Add Cotlet to your agent

    Claude Code
    claude mcp add --transport http cotlet \
  https://cotlet.dev/mcp/v1 \
  --header "Authorization: Bearer $COTLET_API_KEY"
    Cursor
    {
  "mcpServers": {
    "cotlet": {
      "url": "https://cotlet.dev/mcp/v1",
      "headers": {
        "Authorization": "Bearer ${COTLET_API_KEY}"
      }
    }
  }
}
    Codex
    # ~/.codex/config.toml
[mcp_servers.cotlet]
url = "https://cotlet.dev/mcp/v1"
bearer_token_env_var = "COTLET_API_KEY"

    Paste the snippet for your client. The same server and key serve every app you connect, so you do this once.

For scripts: REST API

Every tool is an endpoint under /api/v1/emailoctopus with its own method and path, such as POST /api/v1/emailoctopus/campaigns/{campaign_id}/schedule, with the same API key. Our open-source repo has ready scripts to start from.

REST API docs

What can the EmailOctopus API and MCP server do?

14 tools on your own EmailOctopus account. Agents call them as operations of the MCP tools emailoctopus_read and emailoctopus_write; scripts call each one at its own REST endpoint, with the same inputs and answers.

API reference
EmailOctopus tools in Cotlet's MCP server and REST API
Tool What it does Access
list_lists Lists of your EmailOctopus account with their subscribed, pending and unsubscribed counts. read
list_contacts Contacts of one list with status, tags and dates, filtered by status, tag, segment or email address. read
list_segments Saved segments of a list with the conditions each one is built from. read
list_campaigns Campaigns with status, subject, list, how many contacts they were sent to and open and click rates. read
get_campaign_report Report of one sent campaign: sent, opened, clicked, unsubscribed, bounced and complained, plus links clicked. read
list_campaign_activity Contacts who opened, clicked, unsubscribed, bounced or complained on a campaign, or did not open or click. read
create_segment Create a reusable segment on a list from conditions on tags, fields, dates, source or campaign and contact activity. write
duplicate_campaign Make a draft copy of a campaign, like Duplicate in the Campaigns tab. write
update_campaign Change the name, subject, preview text or sender of a draft campaign. write
set_campaign_recipients Choose who a draft campaign goes to: a whole list, a saved segment or a tag. write
schedule_campaign Schedule a draft campaign for a date, time and timezone. writeasks first
send_campaign Send a draft campaign right away. writeasks first
unschedule_campaign Stop a scheduled campaign from sending, like Unschedule in the Campaigns tab. write
unsubscribe_contacts Mark contacts as unsubscribed in bulk, by segment, tag or email addresses. writeasks first

Scroll the table for all 14 tools.

Ask in plain words. Your agent does the rest.

All EmailOctopus use cases

Is it safe to connect EmailOctopus?

You sign in yourself in your own Cloud Browser, we never save your password, and anything that reaches your readers waits for your OK. The browser profile is encrypted in the EU. Independent scanners grade cotlet.dev A+.

Security overview

How much do the EmailOctopus API and MCP server cost?

One price for both: a tool call costs the same over MCP or REST. Free 7-day trial with 2,000 credits, no card needed. Then one-time credit packs, no subscription, valid 12 months. Most calls use 25 credits, and your Cloud Browser uses 50 credits a day while EmailOctopus is enabled for agents, so 20 calls a day come to 550 credits.

See full pricing
Cotlet credit packs: price, credits and calls at 25 credits each
Credits Price, one time Calls at 25 credits Per 1,000 credits
5,000 $29 200 $5.80
15,000 $79 600 $5.27
32,000 $149 1,280 $4.66
60,000 $249 2,400 $4.15

Only successful calls use credits; failed calls and timeouts cost nothing. At a balance of 0 calls pause, never a surprise charge. Authenticate with the Authorization: Bearer header.

Questions

Does EmailOctopus have an API?

EmailOctopus has a public REST API (v2) for lists, contacts, fields, tags, campaign reports and starting an automation for a contact, but no official MCP server and no API for creating, scheduling or sending a campaign (checked 20 Oct 2026). EmailOctopus states that it does not support API sending: all emails need to be created directly in the Dashboard.

How do I get access?

Sign up free, open EmailOctopus under Integrations in the console and press Request access. Your free trial starts with your account, no card needed.

Is the MCP server different from the API?

No, only the way in. Cotlet builds each integration as a REST API and puts an MCP server on top, so both have the same 14 tools, the same inputs and answers, one API key and one price. AI agents such as Claude, ChatGPT or Cursor use MCP; scripts, cron jobs and HTTP steps in n8n, Make or Zapier use the REST API.

What is the Cloud Browser?

Your own Chrome that Cotlet runs for you in the EU, around the clock. You open it from the console, sign in to EmailOctopus yourself and press Enable for agents. Your agent's calls go through it, from its IP with its cookies, so EmailOctopus sees the browser you signed in with. Password saving is off and the profile is stored encrypted with AES-256-GCM.

Can my agent act without asking me?

Not on anything that reaches other people: schedule_campaign, send_campaign, unsubscribe_contacts wait for your OK by default. You can switch that off per tool for scheduled runs.

Which EmailOctopus plan or access level does my agent need?

Cotlet works in the account you sign in with, so your plan and access level still apply. Extra users with their own access level (Admin, Manager, Analyst, Accountant) are a Pro feature, and an Analyst can only view reports. On the free Starter plan reports stay for 30 days and a list can have 10 tags, against 50 on Pro (EmailOctopus Help: Invite users to your account, Using tags, pricing page).

Can my agent write or design the email?

No. The tools set the name, subject, preview text, sender, recipients and sending time of a campaign, and duplicate_campaign copies a campaign you already designed. The design itself stays in the drag and drop editor or your own HTML, because EmailOctopus has no API for creating emails and says they are created in the Dashboard (EmailOctopus Help: API limits).

Should I use a EmailOctopus MCP server from GitHub instead?

Pick one if you want the code on your own computer and do not mind the upkeep: you install it, sign it in and fix it when EmailOctopus changes. Pick Cotlet if you want it hosted and kept working for you.

Can I use it in n8n, Make or Zapier?

Yes. Add https://cotlet.dev/mcp/v1 in n8n's MCP Client node, or call the REST endpoints from an HTTP step in Make or Zapier.

Who runs Cotlet?

Cotlet is run by Take Group, a Polish software company working since 2019. Take Group runs about 3,200 websites on its own systems and has its own DevOps team for infrastructure security. We built and used integrations like this inside the company for years before opening them as Cotlet.

Is Cotlet affiliated with EmailOctopus?

No. Cotlet is independent and not affiliated with EmailOctopus.

Give your agent access to EmailOctopus.

Free 7-day trial with 2,000 credits, no card needed.

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