# Email Marketing Signal Check: Klaviyo, Mailchimp, Brevo (`candied_breakwater/email-marketing-signal-check`) Actor

Sort an existing website list by visible Mailchimp, Klaviyo and Brevo signals. Paste URLs; download provider-specific CSVs with evidence links. No signal and unverified results stay separate. Static HTML checks, not contact discovery.

- **URL**: https://apify.com/candied\_breakwater/email-marketing-signal-check.md
- **Developed by:** [Herry](https://apify.com/candied_breakwater) (community)
- **Categories:** Developer tools
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.00 / 1,000 url check results

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Sort a website list by visible Mailchimp, Klaviyo or Brevo signals

Paste a list of websites and download separate provider lists with evidence links. Use them to review an existing prospect list, audit visible signup integrations or prepare a manual technology review.

**Best for:** email marketing agencies, ecommerce consultants and researchers who already have website URLs and need a first-pass shortlist of these three platforms.

The tool checks supported patterns in the supplied pages' static HTML. A detected reference is evidence to review; it does not prove that the website has an active or paid subscription.

### Try one website

1. Open **Input** and paste website URLs into **Websites**, one per line. A domain without `https://` is accepted. Replace the sample with your own list when ready.
2. Set **Maximum charge per run** to **$0.01** for this one-site example, then click **Start**. This is a spending cap, not a fixed fee.
3. After **Succeeded**, read **Providers found**, **Evidence links** and **Next step**. Choose **Mailchimp CSV**, **Klaviyo CSV** or **Brevo CSV** to download a shortlist.

```text
https://mikedaleymusic.com/
```

This independent example has returned a Mailchimp signup-form reference in our technical tests. Live pages can change; the website is not a customer or partner of this tool.

For a useful first trial, check a few sites whose integrations you can confirm manually, then compare the evidence before processing the full list.

### Keep detected, absent-from-the-page and unverified results separate

| Observation | Meaning | Download |
| --- | --- | --- |
| **observed** | At least one supported pattern was found. The result includes the provider and the source reference. | A provider-specific CSV, or **All detected providers CSV**. |
| **not\_observed** | None of the supported patterns appeared in the fetched static HTML. This does not prove the site does not use the platform. | **No signal observed CSV**. |
| **unknown** | A block, error, non-HTML response or incomplete page prevented a reliable check. | **Unverified CSV** for manual follow-up. |

A website with more than one detected provider can appear in multiple provider lists. **Checked rows CSV** includes every result; **Readable report** is an HTML overview. Select a named CSV in the output selector, then use **Download** on its file row. To export the dataset as Excel, choose **Export → Excel → Download**.

Each result also includes the requested URL, final URL, HTTP status and check time. Evidence identifies the HTML tag, attribute and referenced URL; query parameters are removed from the evidence link.

### Exactly which installations are detected?

| Platform | Supported visible pattern |
| --- | --- |
| **Mailchimp** | A form action on a `list-manage.com` subdomain with `/subscribe/post` or `/subscribe/post-json`. |
| **Klaviyo** | A script `src` or `data-src` on `static.klaviyo.com`, under `/onsite/js/`, ending in `klaviyo.js`. |
| **Brevo** | A script `src` or `data-src` at `cdn.brevo.com/js/sdk-loader.js`. |

Only the pages you supply are checked. The tool does not crawl the whole website or run JavaScript. Tag-manager installations, dynamically inserted forms, inline loaders, old Sendinblue trackers, server-side integrations and signals on other pages can be missed. A stale or disabled reference can still be detected. Use this as a shortlist with evidence, not a complete technology inventory.

### Pricing

**$1 per 1,000 website checks ($0.001 each), plus $0.00005 per run start at supported memory settings. Platform usage is included.**

One completed check costs **$0.00105**; 100 cost **$0.10005**. All delivered diagnostic rows are charged, including `not_observed` and `unknown`. The price is per supplied page checked, not per provider found or qualified lead. The supplied report files have no separate Actor event fee.

Set the run cap above the website count × $0.001, plus the start fee. `Run budget too low` means the Actor stopped before website requests or result writes; reduce the list or raise the cap. A start fee can still apply. Interrupted runs can leave billed partial output. Treat a batch as complete only after **Succeeded** and `OUTPUT.status: complete`.

### Limits and API use

Up to **1,000 URLs**, **1 MB input**, **2 MB response content** and five redirects per check. Default memory is 256 MB (512 MB maximum); default run timeout is 3,600 seconds. No login, browser rendering, proxy or automatic retry is used. The tool does not discover new websites, extract email addresses, send messages or verify email deliverability.

For integrations, clear **Websites** and send `checks: [{"url": "https://mikedaleymusic.com/"}]`. JSON keeps the structured evidence array; the normal form only needs one URL per line. No history or alert schedule is created automatically.

Input and results stay in the initiating Apify account's storage. Target pages receive anonymous requests; signup forms are not submitted and external scripts are not executed.

**Need help?** Use **Issues** with a non-confidential website URL, the provider you expected and the actual result. A missing signal is useful feedback about coverage, not proof that the website has no email marketing tool.

# Actor input Schema

## `websites` (type: `string`):

Paste 1–1,000 public page URLs or domains, one per line. Domains use HTTPS automatically. Only supplied pages are checked; there is no whole-site crawl. Start with a few websites you can verify manually.

## `checks` (type: `array`):

Alternative for API workflows: \[{"url":"https://example.com/"}]. Clear Websites first. Each object checks one supplied page for supported static HTML signals; no other fields are required.

## Actor input object example

```json
{
  "websites": "https://mikedaleymusic.com/"
}
```

# Actor output Schema

## `results` (type: `string`):

No description

## `completion` (type: `string`):

No description

## `csv` (type: `string`):

No description

## `excel` (type: `string`):

No description

## `report` (type: `string`):

No description

## `checkedCsv` (type: `string`):

No description

## `found` (type: `string`):

No description

## `mailchimp` (type: `string`):

No description

## `klaviyo` (type: `string`):

No description

## `brevo` (type: `string`):

No description

## `notObserved` (type: `string`):

No description

## `unknown` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "websites": "https://mikedaleymusic.com/"
};

// Run the Actor and wait for it to finish
const run = await client.actor("candied_breakwater/email-marketing-signal-check").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "websites": "https://mikedaleymusic.com/" }

# Run the Actor and wait for it to finish
run = client.actor("candied_breakwater/email-marketing-signal-check").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "websites": "https://mikedaleymusic.com/"
}' |
apify call candied_breakwater/email-marketing-signal-check --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,candied_breakwater/email-marketing-signal-check"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/nernQZfguyU81Qhep/builds/3QwV6rKHeAcbUbMiJ/openapi.json