### Example Postback URL with Parameters

Source: https://help.mailercloud.com/en/articles/166-postback-conversion-setup-guide

An example of the postback URL format when sending a conversion event, including the conversion ID and captured tracking parameters.

```text
https://your-domain/postback?conversion_id=aBc&transaction_id=svjYWRSEziWleHwkwdMcChJfdJKEIMvHgKgURblGGARdFBnaMCzF&link_id=79206
```

--------------------------------

### Nested Spintax Example (Not Supported)

Source: https://help.mailercloud.com/en/articles/123-how-to-use-spintax-in-mailercloud

This example shows a nested Spintax structure, which is not supported by the platform. Avoid using multiple layers of brackets and pipes as shown here.

```plaintext
{{Great|Awesome|Fantastic} {job|work}|Keep it up|Well done}, {everyone|team}!
```

--------------------------------

### Campaign List API Response Example

Source: https://help.mailercloud.com/en/articles/165-inbox-tracker-in-api-platform

This is an example of a campaign report response from the Public API, showing inbox placement statistics per provider.

```json
"data": [
  {
    "campaign_id": "newcam",
    "subject": "email subject 100",
    "sent": "0",
    "opens": "0",
    "created_date": "2025-09-22 14:01:34",
    "inbox_percentage": 72.41,
    "spam_percentage": 23.1,
    "missed_percentage": 4.48,
    "providers": [
      {
        "inbox_percentage": "80.00",
        "missed_percentage": "5.00",
        "name": "gmail",
        "spam_percentage": "15.00"
      },
      {
        "inbox_percentage": "0.00",
        "missed_percentage": "0.00",
        "name": "outlook",
        "spam_percentage": "0.00"
      },
      {
        "inbox_percentage": "77.78",
        "missed_percentage": "8.89",
        "name": "yahoo",
        "spam_percentage": "13.33"
      },
      {
        "inbox_percentage": "60.00",
        "missed_percentage": "0.00",
        "name": "others",
        "spam_percentage": "40.00"
      }
    ]
  }
]

```

--------------------------------

### Basic Spintax Email Example

Source: https://help.mailercloud.com/en/articles/123-how-to-use-spintax-in-mailercloud

An example of an email using Spintax to create variations in greetings and content. Ensure alternatives are separated by '|' within curly braces {}.

```plaintext
Hi {there|{{Name}}},
I'm reaching out because {I'm interested in your services|I have a question about your 
product|I'd like your opinion on something}.Specifically, I was wondering 
{what your experience has been with X|if you have any tips for achieving Y|if you could 
tell me more about Z}.
If you have a few minutes, I would appreciate the chance to chat. Please let me know if 
that's possible.
Thanks and have a great day!
{Regards! |Thanks!}
```

--------------------------------

### Example Original and Redirected Campaign Links

Source: https://help.mailercloud.com/en/articles/166-postback-conversion-setup-guide

Illustrates how Mailercloud appends 'transaction_id' and 'link_id' to original campaign links after a click.

```text
https://www.mailercloud.com/login
```

```text
https://www.mailercloud.com/login?transaction_id=svjYWRSEziWleHwkwdMcChJfdJKEIMvHgKgURblGGARdFBnaMCzF&link_id=79206
```

--------------------------------

### Example Email Review API Request Body

Source: https://help.mailercloud.com/en/articles/156-mailercloud-email-review-api-help-guide

This JSON object contains the required email content parameters for the review API. Provide either text_content, html_content, or amp_content.

```json
{
  "text_content": "Welcome to our platform!",
  "html_content": "<h1>Welcome!</h1><p>We are excited to have you.</p>",
  "amp_content": "<amp-img src='logo.png'></amp-img>"
}
```

--------------------------------

### Send Transactional Email using Go

Source: https://help.mailercloud.com/en/articles/134-introduction-to-transactional-emails

Use this Go snippet to send a simple HTML email via SMTP. Ensure you have the gomail.v2 package installed. Replace placeholders with your actual SMTP server details and credentials.

```go
// Package main defines an application that sends a simple HTML email.
package main

import (
    "fmt"
    "gopkg.in/gomail.v2"
)

func main() {
    // Create a new email message.
    m := gomail.NewMessage()
    
    // Set essential headers: sender, recipient, and subject.
    m.SetHeader("From", "your_email@yourdomain.com")
    m.SetHeader("To", "recipient_email@theirdomain.com")
    m.SetHeader("Subject", "Welcome to Our Service!")

    // Set custom headers for tracking purposes
    m.SetHeader("mld-track-opens", "false")              // Custom header for open tracking
    m.SetHeader("mld-track-inbox", "true")               // Custom header for inbox tracking
    m.SetHeader("mld-track-campaign-id", "test-node-threshold")  // Custom header for campaign ID


    // Define the HTML content of the email.
    m.SetBody("text/html", `This is a sample email to test SMTP settings`)

    // Configure the mail server connection with dummy credentials.
    d := gomail.NewDialer("smtp.yourdomain.com", 587, "username@yourdomain.com", "password")

    // Send the email, logging errors or success.
    if err := d.DialAndSend(m); err != nil {
        fmt.Println("Error:", err)
    } else {
        fmt.Println("Message sent successfully")
    }
}
```

--------------------------------

### Webhook Event Triggers and Payloads

Source: https://help.mailercloud.com/en/articles/132-getting-started-with-webhooks

This section details the various event triggers available for Mailercloud webhooks and provides examples of the JSON payloads sent for each event.

```APIDOC
## Event Triggers
Webhooks can be triggered by the following triggered events: **send, open, click, fail, spam, unsubscribe and bounce.**

### 1. Sent Event
This trigger is sent as a batch of up to 1000 emails.

**Payload Example:**
```json
{
  "event": "Campaign Sent",
  "emails": ["****sample@gmail.com****", "****sample2@gmail.com****"],
  "campaign_name": "Sample Campaign",
  "tag_name": "Sample Tag",
  "campaign_id": "abc",
  "date_sent": "2024-01-01 01:30:00",
  "ts": 1604937111,
  "ts_event": 1604937111
}
```

**Parameters:**
*   `event` (string) - Indicates the type of event, e.g., "Campaign Sent".
*   `emails` (array of strings) - An array of email addresses that were sent the campaign.
*   `campaign_name` (string) - The name of the campaign that was sent.
*   `tag_name` (string) - The tag associated with the campaign.
*   `campaign_id` (string) - The unique identifier of the campaign.
*   `date_sent` (string) - The date and time when the campaign was sent.
*   `ts` (integer) - A timestamp representing the date and time in Unix format.
*   `ts_event` (integer) - A timestamp specifically for the event, also in Unix format.

### 2. Open Event

**Payload Example:**
```json
{
  "event": "Opened",
  "email": "sample@gmail.com",
  "campaign_name": "Sample Campaign",
  "tag_name": "Sample Tag",
  "campaign_id": "abc",
  "date_event": "2024-01-01 01:30:00",
  "ts": 1604937111,
  "ts_event": 1604937111
}
```

**Parameters:**
*   `event` (string) - Indicates the type of event, e.g., "Opened".
*   `email` (string) - The email address of the recipient who opened the email.
*   `campaign_name` (string) - The name of the campaign associated with the opened event.
*   `tag_name` (string) - The tag associated with the campaign.
*   `campaign_id` (string) - The unique identifier of the campaign.
*   `date_event` (string) - The date and time when the event (opening) occurred.
*   `ts` (integer) - A timestamp representing the date and time in Unix format.
*   `ts_event` (integer) - A timestamp specifically for the event, also in Unix format.

### 3. Click Event

**Payload Example:**
```json
{
  "event": "Clicked",
  "email": "sample@gmail.com",
  "campaign_name": "Sample Campaign",
  "tag_name": "Sample Tag",
  "campaign_id": "abc",
  "URL": "clicked_url.com",
  "date_event": "2024-01-01 01:30:00",
  "ts": 1604937111,
  "ts_event": 1604937111
}
```

**Parameters:**
*   `event` (string) - Indicates the type of event, e.g., "Clicked".
*   `email` (string) - The email address of the recipient who clicked on the link.
*   `campaign_name` (string) - The name of the campaign associated with the clicked event.
*   `tag_name` (string) - The tag associated with the campaign.
*   `campaign_id` (string) - The unique identifier of the campaign.
*   `URL` (string) - The URL that was clicked by the recipient.
*   `date_event` (string) - The date and time when the event (clicking) occurred.
*   `ts` (integer) - A timestamp representing the date and time in Unix format.
*   `ts_event` (integer) - A timestamp specifically for the event, also in Unix format.

### 4. Fail Event

**Payload Example:**
```json
{
  "event": "Campaign Failed",
  "campaign_name": "Sample Campaign",
  "tag_name": "Sample Tag",
  "campaign_id": "abc",
  "date_event": "2024-01-01 01:30:00",
  "reason": "No sender id",
  "ts": 1604937111,
  "ts_event": 1604937111
}
```

**Parameters:**
*   `event` (string) - Indicates the type of event, e.g., "Campaign Failed".
*   `campaign_name` (string) - The name of the campaign that failed to deliver.
*   `tag_name` (string) - The tag associated with the campaign.
*   `campaign_id` (string) - The unique identifier of the campaign.
*   `date_event` (string) - The date and time when the failure event occurred.
*   `reason` (string) - Provides the reason for the failure.
*   `ts` (integer) - A timestamp representing the date and time in Unix format.
*   `ts_event` (integer) - A timestamp specifically for the event, also in Unix format.

**Note:** Payloads for 'Spam', 'Unsubscribe', and 'Bounce' events are similar in structure to the 'Fail Event', with specific `event` types and potentially additional relevant fields.
```

--------------------------------

### Send Postback Request on Conversion Event

Source: https://help.mailercloud.com/en/articles/166-postback-conversion-setup-guide

JavaScript code using the Fetch API to send a GET request to the postback URL with stored transaction and link IDs when a conversion occurs.

```javascript
const conversionId = 'aBc'; // Your Conversion ID
const transactionId = localStorage.getItem('transaction_id');
const linkId = localStorage.getItem('link_id');

if (transactionId && linkId) {
  const postbackUrl = `https://your-domain/postback?conversion_id=${conversionId}&transaction_id=${transactionId}&link_id=${linkId}`;
  
  fetch(postbackUrl)
    .then(response => console.log('Conversion tracked:', response.status))
    .catch(error => console.error('Error tracking conversion:', error));
}
```

--------------------------------

### Example AMP Error Response from Email Review API

Source: https://help.mailercloud.com/en/articles/156-mailercloud-email-review-api-help-guide

This response format is returned when AMP validation errors are detected in the email content. It details the specific errors found.

```json
{
  "error": "AMP validation errors",
  "validation_errors": [
    {
      "line": 1,
      "position": 15,
      "message": "The mandatory attribute '⚡4email' is missing in tag 'html'."
    },
    {
      "line": 1,
      "position": 49,
      "message": "The attribute 'http-equiv' may not appear in tag 'meta'."
    }
  ]
}
```

--------------------------------

### Success Response Example for Email Review

Source: https://help.mailercloud.com/en/articles/156-mailercloud-email-review-api-help-guide

A successful response from the Email Review API indicating no critical issues. It may include details on broken links, blacklisted domains, and email template size.

```json
{
  "broken_links": ["example.com"],
  "blacklist_domains": [
    {
      "target_domain": "example.com",
      "target_ip": "160.0.232.217",
      "results": [
        {
          "blacklist": "blacklist.net",
          "status": "listed",
          "details": "addresses: [127.0.0.2]"
        }
      ]
    }
  ],
  "template": {
    "total_size": "809 bytes",
    "html_template_size": "500 bytes",
    "text_template_size": "309 bytes"
  }
}
```

--------------------------------

### Mailercloud Click Event Webhook Payload

Source: https://help.mailercloud.com/en/articles/132-getting-started-with-webhooks

Example payload for the 'Clicked' webhook trigger, including the URL that was clicked.

```json
{
"event": "Clicked",
"email": "sample@gmail.com",
"campaign_name": "Sample Campaign",
"tag_name": "Sample Tag",
"campaign_id": "abc",
"URL": "clicked_url.com",
"date_event": "2024-01-01 01:30:00",
"ts": 1604937111,
"ts_event": 1604937111
}
```

--------------------------------

### Spintax for Multiple Text Variations

Source: https://help.mailercloud.com/en/articles/123-how-to-use-spintax-in-mailercloud

Demonstrates how to generate diverse text outputs by combining multiple Spintax elements. Each set of alternatives within braces {} can be independently varied.

```plaintext
{Hello|Hi|Hey} {world|everyone|guys}
```

--------------------------------

### Mailercloud Open Event Webhook Payload

Source: https://help.mailercloud.com/en/articles/132-getting-started-with-webhooks

Example payload for the 'Opened' webhook trigger, detailing recipient and campaign information.

```json
{
"event": "Opened",
"email": "sample@gmail.com",
"campaign_name": "Sample Campaign",
"tag_name": "Sample Tag",
"campaign_id": "abc",
"date_event": "2024-01-01 01:30:00",
"ts": 1604937111,
"ts_event": 1604937111
}
```

--------------------------------

### Mailercloud Fail Event Webhook Payload

Source: https://help.mailercloud.com/en/articles/132-getting-started-with-webhooks

Example payload for the 'Campaign Failed' webhook trigger, specifying the reason for failure.

```json
{
"event": "Campaign Failed",
"campaign_name": "Sample Campaign",
"tag_name": "Sample Tag",
"campaign_id": "abc",
"date_event": "2024-01-01 01:30:00",
"reason": "No sender id",
"ts": 1604937111,
"ts_event": 1604937111
}
```

--------------------------------

### Capture and Store Tracking Parameters on Landing Page

Source: https://help.mailercloud.com/en/articles/166-postback-conversion-setup-guide

JavaScript code to extract 'transaction_id' and 'link_id' from the URL and store them in localStorage.

```javascript
const urlParams = new URLSearchParams(window.location.search);
const transactionId = urlParams.get('transaction_id');
const linkId = urlParams.get('link_id');

if (transactionId && linkId) {
  localStorage.setItem('transaction_id', transactionId);
  localStorage.setItem('link_id', linkId);
}
```