n8n eMailbox Credential Extractor

A protocol-agnostic Custom n8n node for extracting mailbox credentials from Custom Auth credentials.

Features

✨ Protocol-Agnostic: Works with IMAP, SMTP, POP, or any mail protocol 🔐 Secure: Reads credentials from n8n's encrypted credential store 🔄 Reusable: Single credential can be used for multiple mailboxes 📦 Flexible: Node parameters for host, port, and mailbox name ⚡ Simple: Just pass credentials through, get structured data out

Installation

Via n8n UI (Recommended)

1. Go to Credentials → New Credential Type
2. Search for: eMailbox Credential Extractor
3. Install the package

Manual Installation (npm)

npm install @asecaz/n8n-nodes-emailbox-credential-extractor

Then restart your n8n instance.

Usage

Setup Custom Auth Credential

1. Create a new Custom Auth credential
2. Add these fields to the JSON:

{
  "user": "[email protected]",
  "password": "your-password"
}

Use the Node in Workflow

1. Add node: eMailbox Credential Extractor
2. Select your Custom Auth credential
3. Fill in parameters:
   • Host: imap.example.com (or your mail server)
   • Port: 993 (or appropriate port)
   • Mailbox: INBOX (or folder name)

Output

The node returns an object with:

{
  "user": "[email protected]",
  "password": "your-password",
  "host": "imap.example.com",
  "port": 993,
  "mailbox": "INBOX"
}

Use this output in subsequent nodes (e.g., IMAP, SMTP operations).

Node Parameters

| Parameter | Type | Required | Default | Description | |------------|-------------|----------|---------|-------------------------------------------| | Credential | Credentials | ✅ | - | Custom Auth credential with user/password |
| Host | String | ✅ | - | Mail server hostname (IMAP/SMTP/POP) | | Port | Number | ✅ | 993 | Server port (993=IMAPS, 587=SMTP, 995=POP3S) | | Mailbox | String | ✅ | INBOX | Mailbox/folder name to access |

Supported Protocols

• IMAP/IMAPS (Port 993)
• SMTP/SMTPS (Port 587, 25, 465)
• POP3/POP3S (Port 110, 995)
• Custom protocols with custom ports

Example Workflows

IMAP + SMTP with Same Credential