SendGrid

Email delivery platform for transactional and marketing emails.

Capabilities

Integration	Available	Notes
API	✓	Mail Send API, Marketing API
MCP	-	Not available
CLI	-	Not available
SDK	✓	Official libraries for most languages

Authentication

• Type: API Key
• Header: Authorization: Bearer {api_key}
• Get key: Settings > API Keys in SendGrid dashboard

Common Agent Operations

Send email

POST https://api.sendgrid.com/v3/mail/send

Authorization: Bearer {api_key}

{
  "personalizations": [{
    "to": [{"email": "user@example.com"}]
  }],
  "from": {"email": "hello@example.com"},
  "subject": "Welcome!",
  "content": [{
    "type": "text/html",
    "value": "<h1>Welcome!</h1>"
  }]
}

Send with template

POST https://api.sendgrid.com/v3/mail/send

{
  "personalizations": [{
    "to": [{"email": "user@example.com"}],
    "dynamic_template_data": {
      "name": "John",
      "order_id": "12345"
    }
  }],
  "from": {"email": "hello@example.com"},
  "template_id": "d-xxx"
}

Add contact to list

PUT https://api.sendgrid.com/v3/marketing/contacts

{
  "list_ids": ["list-id"],
  "contacts": [{
    "email": "user@example.com",
    "first_name": "John",
    "last_name": "Doe"
  }]
}

Search contacts

POST https://api.sendgrid.com/v3/marketing/contacts/search

{
  "query": "email LIKE 'user@%'"
}

Get email statistics

GET https://api.sendgrid.com/v3/stats?start_date=2024-01-01&end_date=2024-01-31

Authorization: Bearer {api_key}

Get bounces

GET https://api.sendgrid.com/v3/suppression/bounces

Authorization: Bearer {api_key}

Get spam reports

GET https://api.sendgrid.com/v3/suppression/spam_reports

Authorization: Bearer {api_key}

Validate email

POST https://api.sendgrid.com/v3/validations/email

{
  "email": "user@example.com"
}

Webhook Events

Event	Description
processed	Email accepted
delivered	Email delivered
open	Email opened
click	Link clicked
bounce	Hard/soft bounce
dropped	Email dropped
spamreport	Marked as spam
unsubscribe	Unsubscribed

Node.js SDK

const sgMail = require('@sendgrid/mail');
sgMail.setApiKey('SG.xxx');

await sgMail.send({
  to: 'user@example.com',
  from: 'hello@example.com',
  subject: 'Welcome!',
  html: '<h1>Welcome!</h1>'
});

When to Use

• Transactional email at scale
• Marketing email campaigns
• Email validation
• Deliverability management

Rate Limits

• Free: 100 emails/day
• Paid: Varies by plan (up to millions/month)

Relevant Skills

• email-sequence
• analytics-tracking