Unsubscribe Links

{
  "from": {
    "email": "marketing@example.com",
    "name": "Marketing Team"
  },
  "to": [
    {
      "email": "user@example.com",
      "name": "John Doe",
      "customFields": {
        "firstName": "John"
      }
    }
  ],
  "subject": "Special Offer Just for You!",
  "htmlBody": "<p>Hi {{firstName}},</p><p>We have an exclusive offer for you!</p><p><a href='{{unsubscribe}}'>Unsubscribe from these emails</a></p>",
  "textBody": "Hi {{firstName}},\n\nWe have an exclusive offer for you!\n\nUnsubscribe from these emails: {{unsubscribe}}",
  "trackOpens": true,
  "trackClicks": true,
  "groups": [
    "promotional"
  ]
}

<p>Don't want to receive these emails? <a href='{{unsubscribe}}'>Click here to unsubscribe</a></p>

Don't want to receive these emails? Unsubscribe here: {{unsubscribe}}

<p style="font-size: 12px; color: #666;">
  <a href='{{unsubscribe}}' style="color: #999; text-decoration: underline;">Unsubscribe</a>
</p>