# Email CAN-SPAM Checker & Unsubscribe Header Test (`ultimatemc/email-can-spam-checker`) Actor

Pre-check marketing emails before sending for CAN-SPAM gaps: missing unsubscribe link or postal address, opt-out barriers and delays over 10 business days, fake RE:/FW: and alarm subjects, plus Google and Yahoo one-click List-Unsubscribe headers. Sources per finding.

- **URL**: https://apify.com/ultimatemc/email-can-spam-checker.md
- **Developed by:** [Ultimate Foresight Inc](https://apify.com/ultimatemc) (community)
- **Categories:** Marketing, Business, Automation
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.00 / 1,000 results

This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage.

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

**Pre-check marketing emails before you send them** for **CAN-SPAM Act** gaps and **Google / Yahoo bulk-sender unsubscribe** requirements. The **Email CAN-SPAM Checker** reads subject, body, footer and headers and flags **missing unsubscribe links**, **missing postal addresses**, **opt-out barriers** like 'log in to unsubscribe', **opt-out delays over 10 business days**, **fake 'RE:' or 'FW:' subjects**, **alarm subjects**, **promotions inside transactional emails** and missing **List-Unsubscribe** and **one-click List-Unsubscribe-Post** headers. Click **Start** with the prefilled example to see it work.

> This is an automated screen of email content, not a legal determination. It can't check whether links work or whether recipients consented. A clean result doesn't mean an email complies. GDPR, CASL and other countries' rules aren't covered. Not legal advice; every row carries this disclaimer and a timestamp.

### What does the Email CAN-SPAM Checker do?

- ✅ **Unsubscribe missing or hard to use**: no opt-out link or text, or opt-outs that need a login, a fee or more than one page.
- ✅ **Opt-out delays** longer than the 10 business days CAN-SPAM allows.
- ✅ **Postal address missing**: street address, PO Box or private mailbox.
- ✅ **Misleading subjects**: fake RE:/FW: prefixes and alarm subjects like 'your account will be closed' on promotional mail.
- ✅ **Promotions in transactional mail** and a low-severity note when an ad isn't identified as one.
- ✅ **Headers**: List-Unsubscribe and one-click List-Unsubscribe-Post (needed by Gmail and Yahoo for bulk senders), and from-name vs domain mismatches. Header checks only run when you supply headers.
- ✅ Output per row: `subject`, `commercial`, `promotionalContent`, `unsubscribeFound`, `postalAddressFound`, `riskLevel`, `issueCount`, `categoriesFlagged`, `issues` (`ruleId`, `severity`, `message`, `quote`, `sourceUrl`, `fixHint`), `checkedAt` and a disclaimer.

### Who is it for?

- **Email marketers and agencies** checking campaigns before they go out.
- **E-commerce and SaaS teams** reviewing templates and automated flows.
- **Deliverability consultants** auditing many campaigns at once.
- **ESP and CRM builders** adding a pre-send check through the API.

### How to check marketing emails for CAN-SPAM

1. Click **Start** with the prefilled example (a fake RE: sale, an email with opt-out barriers and a clean newsletter).
2. Replace **Emails** with your own: `subject`, `body` (HTML or text with footer), optional `fromName`, `fromEmail`, `headers` and `isTransactional`.
3. Or enter a **Dataset ID** with exported campaigns; use **Field map** for fields like `settings.subject_line`.
4. Turn on **Only save rows with findings** to skip clean emails; you only pay for saved rows.
5. Export results as CSV, Excel or JSON, or fetch them through the API.

### Input example

This is the prefilled input:

```json
{
  "emails": [
    {
      "id": "EXAMPLE-SALE",
      "subject": "RE: your order",
      "body": "<p>Black Friday: 40% off everything. Shop now!</p>"
    },
    {
      "id": "EXAMPLE-OPTOUT",
      "subject": "New arrivals are here",
      "body": "<p>Shop the new collection.</p><p>To unsubscribe, log in to your account. Please allow up to 30 days for removal.</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
      "headers": {
        "List-Unsubscribe": "<mailto:unsubscribe@example.com>"
      }
    },
    {
      "id": "EXAMPLE-NEWS",
      "subject": "October tips from Example Co",
      "fromName": "Example Co",
      "fromEmail": "news@example.com",
      "body": "<p>Five ways to save energy this winter.</p><p>You're receiving this because you signed up at example.com. <a href='https://example.com/u'>Unsubscribe</a> | Manage preferences</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
      "headers": {
        "List-Unsubscribe": "<https://example.com/u/one-click>",
        "List-Unsubscribe-Post": "List-Unsubscribe=One-Click"
      }
    }
  ]
}
```

Dataset mode:

```json
{"datasetId": "YOUR_DATASET_ID", "fieldMap": {"subject": "settings.subject_line", "body": "html"}, "onlyFlagged": true}
```

### Output example

Real output from a run of the prefilled input on 2026-11-01 (long finding lists are shortened here; the run returns all of them):

```json
[
  {
    "itemNo": 1,
    "emailId": "EXAMPLE-SALE",
    "title": null,
    "subject": "RE: your order",
    "commercial": true,
    "promotionalContent": true,
    "unsubscribeFound": false,
    "postalAddressFound": false,
    "riskLevel": "high",
    "issueCount": 4,
    "categoriesFlagged": [
      "ad_not_identified",
      "fake_reply_subject",
      "postal_address_missing",
      "unsubscribe_missing"
    ],
    "issues": [
      {
        "ruleId": "unsubscribe_missing",
        "severity": "high",
        "message": "No unsubscribe or opt-out mechanism found. Commercial email must include a clear way to opt out that works for at least 30 days after sending (15 USC 7704(a)(3)).",
        "quote": null,
        "sourceUrl": "https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business",
        "fixHint": "Add a visible 'Unsubscribe' link (and a list-unsubscribe header)."
      },
      {
        "ruleId": "postal_address_missing",
        "severity": "high",
        "message": "No physical postal address found. Commercial email must include a valid postal address: a street address, a registered PO box or a registered private mailbox (15 USC 7704(a)(5)).",
        "quote": null,
        "sourceUrl": "https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business",
        "fixHint": "Add your business postal address to the footer."
      },
      {
        "...": "2 more findings: ad_not_identified 'No clear statement that the email is an advertisem', fake_reply_subject 'RE: your order'"
      }
    ],
    "url": null,
    "checkedAt": "2026-11-01T19:35:06+00:00",
    "disclaimer": "Automated keyword screening of the email content supplied against the US CAN-SPAM Act (15..."
  },
  {
    "itemNo": 2,
    "emailId": "EXAMPLE-OPTOUT",
    "title": null,
    "subject": "New arrivals are here",
    "commercial": true,
    "promotionalContent": true,
    "unsubscribeFound": true,
    "postalAddressFound": true,
    "riskLevel": "high",
    "issueCount": 4,
    "categoriesFlagged": [
      "ad_not_identified",
      "one_click_post_header_missing",
      "opt_out_delay_too_long",
      "unsubscribe_barrier"
    ],
    "issues": [
      {
        "ruleId": "unsubscribe_barrier",
        "severity": "high",
        "message": "Opting out appears to need a login, password, fee or extra information. The FTC rule bars requiring anything beyond an email address and opt-out preferences, or steps other than a reply email or a single web page (16 CFR 316.5).",
        "quote": "Shop the new collection.  To unsubscribe, log in to your account. Please allow up to 30...",
        "sourceUrl": "https://www.ecfr.gov/current/title-16/chapter-I/subchapter-C/part-316",
        "fixHint": "Let people unsubscribe from one page without signing in."
      },
      {
        "ruleId": "opt_out_delay_too_long",
        "severity": "high",
        "message": "Says opt-outs may take 30 days. CAN-SPAM requires honoring opt-outs within 10 business days.",
        "quote": "...bscribe, log in to your account. Please allow up to 30 days for removal.  Example Co, 123 Main Street, Springfi...",
        "sourceUrl": "https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business",
        "fixHint": "Process unsubscribes within 10 business days (mailbox providers expect 2 days)."
      },
      {
        "...": "2 more findings: ad_not_identified 'No clear statement that the email is an advertisem', one_click_post_header_missing 'List-Unsubscribe is present but List-Unsubscribe-P'"
      }
    ],
    "url": null,
    "checkedAt": "2026-11-01T19:35:06+00:00",
    "disclaimer": "Automated keyword screening of the email content supplied against the US CAN-SPAM Act (15..."
  },
  {
    "itemNo": 3,
    "emailId": "EXAMPLE-NEWS",
    "title": null,
    "subject": "October tips from Example Co",
    "commercial": true,
    "promotionalContent": false,
    "unsubscribeFound": true,
    "postalAddressFound": true,
    "riskLevel": "none found",
    "issueCount": 0,
    "categoriesFlagged": [],
    "issues": [],
    "url": null,
    "checkedAt": "2026-11-01T19:35:06+00:00",
    "disclaimer": "Automated keyword screening of the email content supplied against the US CAN-SPAM Act (15..."
  }
]
```

### How much does it cost to check emails?

This Actor uses pay-per-event pricing: **$0.001 per email saved** plus a **$0.00005 start fee per run**, plus small platform usage paid by you (a few hundredths of a cent for small runs). That's about **$1.00 for 1,000 emails** and **$10.00 for 10,000** plus usage. With **Only save rows with findings** on, rows without findings aren't saved or charged. You can set a maximum cost per run in the run options.

### Use it through the API, integrations or AI agents

- Run it and get results in one call: `https://api.apify.com/v2/acts/ultimatemc~email-can-spam-checker/run-sync-get-dataset-items`
- Use it from AI agents through the Apify MCP server: `https://mcp.apify.com?tools=ultimatemc/email-can-spam-checker`
- Schedule it after a daily scraper run, send flagged rows to Slack or email with webhooks, or connect it to Make, Zapier, n8n or Google Sheets.
- Call it from your sending pipeline before each campaign goes out.

### How it works

Checks are deterministic rules written from the FTC's CAN-SPAM compliance guide, 16 CFR 316, 15 U.S.C. 7704 and Google's and Yahoo's sender requirements, checked on 2026-11-01. HTML is converted to text, and footers, addresses and opt-out wording are matched with patterns. No AI and no external calls.

Sources:

- [FTC: CAN-SPAM Act, A Compliance Guide for Business](https://www.ftc.gov/business-guidance/resources/can-spam-act-compliance-guide-business)
- [eCFR: 16 CFR Part 316, CAN-SPAM Rule](https://www.ecfr.gov/current/title-16/chapter-I/subchapter-C/part-316)
- [15 U.S.C. 7704 (LII)](https://www.law.cornell.edu/uscode/text/15/7704)
- [Google: Email sender guidelines](https://support.google.com/a/answer/81126)
- [Yahoo: Sender best practices](https://senders.yahooinc.com/best-practices/)

### FAQ

#### Does CAN-SPAM require consent?

No, US law is opt-out. It requires honest headers and subjects, an ad disclosure, a postal address and a working opt-out honored within 10 business days.

#### Why are header checks skipped sometimes?

They only run when you supply headers, so body-only checks aren't flagged for missing headers.

#### Does it check transactional emails?

Yes, lightly. Set `isTransactional` to true and the checker only flags promotional content inside them.

#### Does it send or test emails?

No. It reads the content you supply and never sends anything.

#### Is it AI?

No. It's a fixed set of rules, so the same input always gives the same result.

### Limitations

- It can't click links or verify that unsubscribe actually works.
- US law and Gmail/Yahoo sender rules only; GDPR, CASL and others aren't covered.
- Spam-filter scoring and deliverability aren't measured.

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- [Ad Copy Policy Checker for Meta, Google & TikTok](https://apify.com/ultimatemc/ad-copy-policy-checker): checks ad text against Facebook, Instagram, Google Ads and TikTok ad policies before you submit.
- [H-1B Visa Sponsor Checker & Score for Job Listings](https://apify.com/ultimatemc/h1b-visa-sponsor-score): adds Department of Labor H-1B sponsorship history and a 0-100 score to company names or job listings.
- [Chain vs Independent Labeler for Google Maps Leads](https://apify.com/ultimatemc/chain-vs-independent-labeler): labels local businesses as chain, franchise or independent.
- [YouTube Monetization Checker for Scripts & Titles](https://apify.com/ultimatemc/youtube-script-monetization-checker): pre-checks titles, descriptions and scripts for wording that leads to limited or no ads.
- [Etsy & eBay Listing Policy & Banned Item Checker](https://apify.com/ultimatemc/etsy-ebay-listing-policy-checker): pre-checks marketplace listings for prohibited items, counterfeit wording and off-platform contact.
- [Job Scam Detector & Trust Score for Job Postings](https://apify.com/ultimatemc/job-posting-trust-score): scores job postings 0-100 for scam and ghost-job signals.
- [SAM.gov Amendment & Opportunity Change Tracker](https://apify.com/ultimatemc/sam-gov-opportunity-change-detector): shows what changed between versions of a SAM.gov notice: deadlines, set-asides, NAICS and attachments.
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- [App Store & Google Play Listing Policy Checker](https://apify.com/ultimatemc/app-store-listing-policy-checker): pre-checks app names, subtitles and descriptions against Apple and Google Play metadata rules.
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Found a false positive? Open an issue on the **Issues** tab with the email content and what you expected, and we'll review the rule.

# Actor input Schema

## `emails` (type: `array`):

Array of objects with "subject" and "body" (HTML or text, including the footer) and optional "fromName", "fromEmail", "headers" (object or raw header text), "isTransactional", "id". The prefilled example shows common problems next to a clean newsletter; replace it with your own.

## `bodies` (type: `array`):

One full email body (HTML or text, with footer) per entry.

## `datasetId` (type: `string`):

Apify dataset with emails, for example exported campaign HTML, an email archive scrape or a Mailchimp/Klaviyo export. Common fields (subject, html, text, fromName, fromEmail, headers) are detected automatically; override them with Field map.

## `fieldMap` (type: `object`):

Override field names; dotted paths work for nested fields. Example: {"subject": "settings.subject_line", "body": "html"}.

## `onlyFlagged` (type: `boolean`):

Skip emails with no findings (you are only charged for saved rows).

## `maxItems` (type: `integer`):

Maximum number of emails to check in this run.

## Actor input object example

```json
{
  "emails": [
    {
      "id": "EXAMPLE-SALE",
      "subject": "RE: your order",
      "body": "<p>Black Friday: 40% off everything. Shop now!</p>"
    },
    {
      "id": "EXAMPLE-OPTOUT",
      "subject": "New arrivals are here",
      "body": "<p>Shop the new collection.</p><p>To unsubscribe, log in to your account. Please allow up to 30 days for removal.</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
      "headers": {
        "List-Unsubscribe": "<mailto:unsubscribe@example.com>"
      }
    },
    {
      "id": "EXAMPLE-NEWS",
      "subject": "October tips from Example Co",
      "fromName": "Example Co",
      "fromEmail": "news@example.com",
      "body": "<p>Five ways to save energy this winter.</p><p>You're receiving this because you signed up at example.com. <a href='https://example.com/u'>Unsubscribe</a> | Manage preferences</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
      "headers": {
        "List-Unsubscribe": "<https://example.com/u/one-click>",
        "List-Unsubscribe-Post": "List-Unsubscribe=One-Click"
      }
    }
  ],
  "onlyFlagged": false,
  "maxItems": 10000
}
```

# Actor output Schema

## `results` (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 = {
    "emails": [
        {
            "id": "EXAMPLE-SALE",
            "subject": "RE: your order",
            "body": "<p>Black Friday: 40% off everything. Shop now!</p>"
        },
        {
            "id": "EXAMPLE-OPTOUT",
            "subject": "New arrivals are here",
            "body": "<p>Shop the new collection.</p><p>To unsubscribe, log in to your account. Please allow up to 30 days for removal.</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
            "headers": {
                "List-Unsubscribe": "<mailto:unsubscribe@example.com>"
            }
        },
        {
            "id": "EXAMPLE-NEWS",
            "subject": "October tips from Example Co",
            "fromName": "Example Co",
            "fromEmail": "news@example.com",
            "body": "<p>Five ways to save energy this winter.</p><p>You're receiving this because you signed up at example.com. <a href='https://example.com/u'>Unsubscribe</a> | Manage preferences</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
            "headers": {
                "List-Unsubscribe": "<https://example.com/u/one-click>",
                "List-Unsubscribe-Post": "List-Unsubscribe=One-Click"
            }
        }
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("ultimatemc/email-can-spam-checker").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 = { "emails": [
        {
            "id": "EXAMPLE-SALE",
            "subject": "RE: your order",
            "body": "<p>Black Friday: 40% off everything. Shop now!</p>",
        },
        {
            "id": "EXAMPLE-OPTOUT",
            "subject": "New arrivals are here",
            "body": "<p>Shop the new collection.</p><p>To unsubscribe, log in to your account. Please allow up to 30 days for removal.</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
            "headers": { "List-Unsubscribe": "<mailto:unsubscribe@example.com>" },
        },
        {
            "id": "EXAMPLE-NEWS",
            "subject": "October tips from Example Co",
            "fromName": "Example Co",
            "fromEmail": "news@example.com",
            "body": "<p>Five ways to save energy this winter.</p><p>You're receiving this because you signed up at example.com. <a href='https://example.com/u'>Unsubscribe</a> | Manage preferences</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
            "headers": {
                "List-Unsubscribe": "<https://example.com/u/one-click>",
                "List-Unsubscribe-Post": "List-Unsubscribe=One-Click",
            },
        },
    ] }

# Run the Actor and wait for it to finish
run = client.actor("ultimatemc/email-can-spam-checker").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 '{
  "emails": [
    {
      "id": "EXAMPLE-SALE",
      "subject": "RE: your order",
      "body": "<p>Black Friday: 40% off everything. Shop now!</p>"
    },
    {
      "id": "EXAMPLE-OPTOUT",
      "subject": "New arrivals are here",
      "body": "<p>Shop the new collection.</p><p>To unsubscribe, log in to your account. Please allow up to 30 days for removal.</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
      "headers": {
        "List-Unsubscribe": "<mailto:unsubscribe@example.com>"
      }
    },
    {
      "id": "EXAMPLE-NEWS",
      "subject": "October tips from Example Co",
      "fromName": "Example Co",
      "fromEmail": "news@example.com",
      "body": "<p>Five ways to save energy this winter.</p><p>You'\''re receiving this because you signed up at example.com. <a href='\''https://example.com/u'\''>Unsubscribe</a> | Manage preferences</p><p>Example Co, 123 Main Street, Springfield, IL 62701</p>",
      "headers": {
        "List-Unsubscribe": "<https://example.com/u/one-click>",
        "List-Unsubscribe-Post": "List-Unsubscribe=One-Click"
      }
    }
  ]
}' |
apify call ultimatemc/email-can-spam-checker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,ultimatemc/email-can-spam-checker"
        }
    }
}
```

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/YoBca0TR6btb5scYN/builds/AuybawOMzhd6fEpn4/openapi.json