Loopwise Docs

The sendCustomEmail mutation allows you to send custom emails to users through the Loopwise platform. This enables you to communicate directly with your students and users.

Input Parameters

Field	Type	Description
`email`	`String!`	Email address of the recipient
`subject`	`String!`	The subject of the email (Base64 encoded)
`content`	`String!`	The content of the email (Base64 encoded)
`templateVariables`	`JSON`	Template variables for dynamic content

Return Type

type AdminSendCustomEmailPayload {
  # Success message or error details
  message: String

  # Boolean indicating whether the email was sent successfully
  success: Boolean!
}

Example

mutation SendCustomEmail {
  sendCustomEmail(
    email: "student@example.com"
    subject: "V2VsY29tZSB0byBvdXIgY291cnNlIQ=="  # Base64 for "Welcome to our course!"
    content: "SGkgSm9obiwgd2VsY29tZSB0byBvdXIgR3JhcGhRTCBjb3Vyc2UhIFdlJ3JlIGV4Y2l0ZWQgdG8gaGF2ZSB5b3UuLi4="  # Base64 encoded content
    templateVariables: {
      userName: "John"
      courseName: "GraphQL Fundamentals"
    }
  ) {
    success
    message
  }
}

Sample Response

{
  "data": {
    "sendCustomEmail": {
      "success": true,
      "message": "Email sent successfully"
    }
  }
}

Error Response

If the email fails to send:

{
  "data": {
    "sendCustomEmail": {
      "success": false,
      "message": "Invalid email address"
    }
  }
}

Base64 Encoding

The subject and content fields must be Base64 encoded. Here's how to encode them:

JavaScript Example

const subject = btoa("Welcome to our course!");
const content = btoa(`
Hi {{userName}},

Welcome to {{courseName}}! We're excited to have you join us.

Best regards,
The Loopwise Team
`);

Python Example

import base64

subject = base64.b64encode("Welcome to our course!".encode()).decode()
content = base64.b64encode("""
Hi {{userName}},

Welcome to {{courseName}}! We're excited to have you join us.

Best regards,
The Loopwise Team
""".encode()).decode()

Template Variables

The templateVariables field allows you to pass dynamic content that can be used in the email template. Common variables include:

Variable	Description
`userName`	The recipient's name
`courseName`	Name of a course
`schoolName`	Name of your school
`customData`	Any custom data you want to include

Common Errors

Error	Description
`Invalid email address`	The provided email address is not valid
`Subject required`	The email subject cannot be empty
`Content required`	The email content cannot be empty
`Invalid Base64 encoding`	The subject or content is not properly Base64 encoded
`Email service unavailable`	The email service is temporarily unavailable

Important Notes

Both subject and content must be Base64 encoded
Template variables can be used within the content using double curly braces (e.g., {{userName}})
Emails are sent asynchronously — a successful response means the email was queued for delivery
Consider rate limiting when sending bulk emails

Send Custom Email