# Mailer send Integration via LowCodeAPI

**Last Updated**: February 10, 2026

## Overview
Email service

**Categories:**
- {'id': 'transactional-email', 'name': 'Transactional Email'}

## Base Endpoint
https://api.lowcodeapi.com/mailersend

**Important**: Always include the provider name in the URL path after `api.lowcodeapi.com/`

## Authentication
**Type:** TOKEN

**Official Documentation:** https://developers.mailersend.com

## URL Format (Important)

LowCodeAPI supports two URL formats. **Always try the New Format first**, then fall back to Old Format if needed.

### New Format (Priority)
- Path parameters stay in the URL path
- Do NOT include path parameters as query parameters
- Example: `https://api.lowcodeapi.com/{provider}/resource/{id}?api_token=XXX`

### Old Format (Fallback)
- Path parameters become query parameters
- Example: `https://api.lowcodeapi.com/{provider}/resource/id?id={id}&api_token=XXX`

### Decision Flow for AI Agents
1. Always use **New Format** first - keep path parameters in the URL path
2. If you get a 404 or error, try **Old Format** with sanitized path
3. Log which format worked for future requests to this provider

## API Categories

## Common Endpoints

### Send an email

**Method:** POST
**LowCodeAPI Path:** /v1/email

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/email?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/email?api_token=YOUR_API_TOKEN

**Request Body:**

| Field | Type | Description |
|-------|------|-------------|
| text | string |  |
| attachments | array |  |
| bcc | array |  |
| cc | array |  |
| from | object |  |
| headers | object |  |
| html | string |  |
| in_reply_to | string |  |
| personalization | array |  |
| precedence_bulk | boolean |  |
| reply_to | object |  |
| send_at | number |  |
| settings | object |  |
| subject | string |  |
| tags | array |  |
| template_id | string |  |
| to | array |  |

**Example Request (New Format):**

```bash
curl -X POST 'https://api.lowcodeapi.com/mailersend/v1/email?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/email.html#send-an-email

### Send bulk emails

**Method:** POST
**LowCodeAPI Path:** /v1/bulk-email

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/bulk-email?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/bulk-email?api_token=YOUR_API_TOKEN

**Request Body:**

| Field | Type | Description |
|-------|------|-------------|
| text | string |  |
| from | object |  |
| html | string |  |
| personalization | array |  |
| subject | string |  |
| tags | array |  |
| template_id | string |  |
| to | array |  |

**Example Request (New Format):**

```bash
curl -X POST 'https://api.lowcodeapi.com/mailersend/v1/bulk-email?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/email.html#send-bulk-emails

### List domains

**Method:** GET
**LowCodeAPI Path:** /v1/domains

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains?api_token=YOUR_API_TOKEN

**Query Parameters:**

| Parameter | Type | Description |
|-----------|------|-------------|
| limit | number |  |
| page | number |  |

**Example Request (New Format):**

```bash
curl -X GET 'https://api.lowcodeapi.com/mailersend/v1/domains?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/domains.html#get-a-list-of-domains

### Get a domain

**Method:** GET
**LowCodeAPI Path:** /v1/domains/{domain_id}

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/domain_id?domain_id={domain_id}&api_token=YOUR_API_TOKEN

**Path Parameters:**

| Parameter | Type | Description |
|-----------|------|-------------|
| domain_id | string |  |

**Example Request (New Format):**

```bash
curl -X GET 'https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/domains.html#get-a-single-domain

### Create a domain

**Method:** POST
**LowCodeAPI Path:** /v1/domains

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains?api_token=YOUR_API_TOKEN

**Request Body:**

| Field | Type | Description |
|-------|------|-------------|
| name | string |  |

**Example Request (New Format):**

```bash
curl -X POST 'https://api.lowcodeapi.com/mailersend/v1/domains?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/domains.html#create-a-domain

### Update a domain

**Method:** PUT
**LowCodeAPI Path:** /v1/domains/{domain_id}

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/domain_id?domain_id={domain_id}&api_token=YOUR_API_TOKEN

**Path Parameters:**

| Parameter | Type | Description |
|-----------|------|-------------|
| domain_id | string |  |

**Request Body:**

| Field | Type | Description |
|-------|------|-------------|
| custom_tracking_subdomain | string |  |
| name | string |  |
| return_path_subdomain | string |  |

**Example Request (New Format):**

```bash
curl -X PUT 'https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/domains.html#update-a-domain

### Delete a domain

**Method:** DELETE
**LowCodeAPI Path:** /v1/domains/{domain_id}

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/domain_id?domain_id={domain_id}&api_token=YOUR_API_TOKEN

**Path Parameters:**

| Parameter | Type | Description |
|-----------|------|-------------|
| domain_id | string |  |

**Example Request (New Format):**

```bash
curl -X DELETE 'https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/domains.html#delete-a-domain

### Verify a domain

**Method:** GET
**LowCodeAPI Path:** /v1/domains/{domain_id}/verify

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}/verify?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/domain_id/verify?domain_id={domain_id}&api_token=YOUR_API_TOKEN

**Path Parameters:**

| Parameter | Type | Description |
|-----------|------|-------------|
| domain_id | string |  |

**Example Request (New Format):**

```bash
curl -X GET 'https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}/verify?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/domains.html#verify-a-domain

### Get DNS records

**Method:** GET
**LowCodeAPI Path:** /v1/domains/{domain_id}/dns-records

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}/dns-records?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/domains/domain_id/dns-records?domain_id={domain_id}&api_token=YOUR_API_TOKEN

**Path Parameters:**

| Parameter | Type | Description |
|-----------|------|-------------|
| domain_id | string |  |

**Example Request (New Format):**

```bash
curl -X GET 'https://api.lowcodeapi.com/mailersend/v1/domains/{domain_id}/dns-records?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/domains.html#get-dns-records

### List templates

**Method:** GET
**LowCodeAPI Path:** /v1/templates

**New Format URL:**
https://api.lowcodeapi.com/mailersend/v1/templates?api_token=YOUR_API_TOKEN

**Old Format URL:**
https://api.lowcodeapi.com/mailersend/v1/templates?api_token=YOUR_API_TOKEN

**Query Parameters:**

| Parameter | Type | Description |
|-----------|------|-------------|
| limit | number |  |
| page | number |  |

**Example Request (New Format):**

```bash
curl -X GET 'https://api.lowcodeapi.com/mailersend/v1/templates?api_token=YOUR_API_TOKEN'
```

**Official Documentation:** https://developers.mailersend.com/api/v1/templates.html#get-a-list-of-templates


## Usage Examples

### Example 1: Send an Email

```bash
# Send an email - no path parameters needed
curl -X POST "https://api.lowcodeapi.com/mailersend/send?api_token=YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "[email protected]",
    "to": "[email protected]",
    "subject": "Test Email",
    "text": "This is a test email from Mailer send"
  }'
```

### Example 2: List Sent Emails

```bash
# Get list of sent emails
curl -X GET "https://api.lowcodeapi.com/mailersend/messages?api_token=YOUR_API_TOKEN"
```

### Example 3: Get Email Details

```bash
# Get specific message by ID
curl -X GET "https://api.lowcodeapi.com/mailersend/messages/{MESSAGE_ID}?api_token=YOUR_API_TOKEN"
```

## Error Handling

LowCodeAPI returns standard HTTP status codes. Common errors:

| Status Code | Description |
|-------------|-------------|
| 200 | Success - Request completed successfully |
| 400 | Bad Request - Invalid parameters or request body |
| 401 | Unauthorized - Invalid or missing API token |
| 403 | Forbidden - Insufficient permissions |
| 404 | Not Found - Endpoint or resource doesn't exist |
| 429 | Too Many Requests - Rate limit exceeded |
| 500 | Server Error - Provider API error |

All error responses include error details:

```json
{
  "data": {
    "error": {
      "message": "Error description",
      "code": "ERROR_CODE"
    }
  }
}
```

## Complete Endpoint Reference

| Endpoint | Method | Category |
|----------|--------|----------|
| Send an email | POST | Emails |
| Send bulk emails | POST | Emails |
| List domains | GET | Domains |
| Get a domain | GET | Domains |
| Create a domain | POST | Domains |
| Update a domain | PUT | Domains |
| Delete a domain | DELETE | Domains |
| Verify a domain | GET | Domains |
| Get DNS records | GET | Domains |
| List templates | GET | Templates |
| Get a template | GET | Templates |
| Create a template | POST | Templates |
| Update a template | PUT | Templates |
| Delete a template | DELETE | Templates |
| List webhooks | GET | Webhooks |
| Get a webhook | GET | Webhooks |
| Create a webhook | POST | Webhooks |
| Update a webhook | PUT | Webhooks |
| Delete a webhook | DELETE | Webhooks |
| List activity events | GET | Activity |
| Get an activity event | GET | Activity |
| List bounces | GET | Suppressions |
| Add bounces | POST | Suppressions |
| Delete a bounce | DELETE | Suppressions |
| List unsubscribes | GET | Suppressions |
| Add unsubscribes | POST | Suppressions |
| Delete an unsubscribe | DELETE | Suppressions |
| List spam complaints | GET | Suppressions |
| Add spam complaints | POST | Suppressions |
| Delete a spam complaint | DELETE | Suppressions |
| List tokens | GET | Tokens |
| Get a token | GET | Tokens |
| Create a token | POST | Tokens |
| Update a token | PUT | Tokens |
| Delete a token | DELETE | Tokens |
| List recipients | GET | Recipients |
| Get a recipient | GET | Recipients |
| Create a recipient | POST | Recipients |
| Update a recipient | PUT | Recipients |
| Delete a recipient | DELETE | Recipients |
| List recipient lists | GET | Recipients |
| Get a recipient list | GET | Recipients |
| Create a recipient list | POST | Recipients |
| Update a recipient list | PUT | Recipients |
| Delete a recipient list | DELETE | Recipients |
| Add recipients to a list | POST | Recipients |
| Remove a recipient from a list | DELETE | Recipients |

## API Definition Endpoints

You can fetch the complete API specification for this provider:

**New Format (OpenAPI spec):**
```bash
curl 'https://backend.lowcodeapi.com/mailersend/openapi'
```

**Old Format (API definition):**
```bash
curl 'https://backend.lowcodeapi.com/mailersend/definition'
```

## Response Format

All responses are wrapped in a `data` key:

```json
{
  "data": {
    // Actual response from provider (object or array)
  }
}
```