SMTP Node

Send emails through SMTP servers in Axellero workflows. Supports multiple authentication methods and encryption protocols.

Available Operations

Send: Send emails with attachments and advanced formatting options

Connection Configuration

Parameter	Type	Required	Description
`host`	TEXT	Yes	SMTP server hostname
`port`	INT	Yes	SMTP server port (e.g., 587 for TLS, 465 for SSL, 25 for unencrypted)
`username`	TEXT	No	SMTP username for authentication
`password`	TEXT	No	SMTP password for authentication
`encryption`	TEXT	No	Encryption method: `none`, `ssl`, `tls` (default: `none`)
`authentication`	TEXT	No	Authentication method: `none`, `plain`, `username`, `crammd5` (default: `none`)

{
  "host": "smtp.gmail.com",
  "port": 587,
  "username": "{{ctx.consts.SMTP_USERNAME}}",
  "password": "{{ctx.consts.SMTP_PASSWORD}}",
  "encryption": "tls",
  "authentication": "plain"
}

Email Composition

Parameter	Type	Required	Description
`from`	TEXT	Yes	Sender email address
`to`	TEXT	Yes	Recipient email addresses (comma-separated)
`cc`	TEXT	No	CC recipients (comma-separated)
`bcc`	TEXT	No	BCC recipients (comma-separated)
`subject`	TEXT	Yes	Email subject line
`body`	TEXT	Yes	Email body content
`isHtml`	BOOLEAN	No	Whether body content is HTML (default: `false`)
`attachments`	TEXT	No	JSON array of attachment objects

Basic Email

{
  "from": "sender@example.com",
  "to": "recipient@example.com",
  "subject": "Test Email",
  "body": "This is a test email message.",
  "isHtml": false
}

HTML Email with Multiple Recipients

{
  "from": "notifications@company.com",
  "to": "user1@example.com,user2@example.com",
  "cc": "manager@company.com",
  "subject": "Project Update",
  "body": "<h2>Project Status</h2><p>The project is <strong>on track</strong> for delivery.</p>",
  "isHtml": true
}

Email with Attachments

{
  "from": "reports@company.com",
  "to": "{{ctx.user.email}}",
  "subject": "Monthly Report",
  "body": "Please find the monthly report attached.",
  "attachments": "[{\"name\":\"report.pdf\",\"data\":\"{{ctx.nodes.pdfGenerator.outputs.base64}}\",\"type\":\"base64\"},{\"name\":\"chart.png\",\"url\":\"https://example.com/chart.png\",\"type\":\"url\"}]"
}

Attachment Format

Attachments support two methods:

Base64 Data

{
  "name": "document.pdf",
  "data": "JVBERi0xLjQKJcfs...",
  "type": "base64"
}

URL Download

{
  "name": "image.jpg", 
  "url": "https://example.com/image.jpg",
  "type": "url"
}

Workflow Integration

Use workflow context to construct dynamic email content:

{
  "from": "{{ctx.consts.SYSTEM_EMAIL}}",
  "to": "{{ctx.user.email}}",
  "subject": "Order Confirmation - {{ctx.vars.orderNumber}}",
  "body": "Hello {{ctx.user.name}}, your order for {{ctx.vars.productName}} has been confirmed.",
  "isHtml": false
}

Response Format

Success Response

{
  "success": true,
  "messageId": "smtp_msg_12345",
  "recipients": ["user@example.com", "manager@company.com"]
}

Error Response

{
  "success": false,
  "error": "Failed to connect to SMTP server"
}

Common SMTP Configurations

Gmail SMTP

{
  "host": "smtp.gmail.com",
  "port": 587,
  "encryption": "tls",
  "authentication": "plain"
}

Outlook/Hotmail SMTP

{
  "host": "smtp-mail.outlook.com", 
  "port": 587,
  "encryption": "tls",
  "authentication": "plain"
}

Office 365 SMTP

{
  "host": "smtp.office365.com",
  "port": 587,
  "encryption": "tls", 
  "authentication": "plain"
}

Custom SMTP Server

{
  "host": "mail.company.com",
  "port": 465,
  "encryption": "ssl",
  "authentication": "crammd5"
}

Use Cases

Automated notifications: Send order confirmations and status updates
Alert systems: Email critical system alerts and monitoring notifications
Report delivery: Send scheduled reports and analytics summaries
User communications: Account activation and password reset emails

SMTP

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