Mailchimp Developer Documentation

curl -X POST https://mandrillapp.com/api/1.4/templates/update \
     -H "Content-Type: application/json" \
     -d '{
  "key": "ONzNrsmbtNXoIKyfPmjnig",
  "name": "Example Template",
  "from_email": "sender@example.com",
  "from_name": "Example Name",
  "subject": "Welcome to our service",
  "code": "<div>new example code</div>",
  "text": "Example text content",
  "publish": true,
  "labels": [
    "example-label"
  ]
}'

{
  "code": "<p>test</p>",
  "created_at": "2025-08-29 18:47:40.26276",
  "draft_updated_at": "2025-08-29 18:47:40",
  "from_email": "test@mailchimp.com",
  "from_name": "Freddie",
  "is_broken_template": false,
  "labels": [],
  "name": "test-template",
  "publish_code": "<p>test</p>",
  "publish_from_email": "test@mailchimp.com",
  "publish_from_name": "Freddie",
  "publish_name": "test-template",
  "publish_subject": "test",
  "publish_text": "test",
  "published_at": "2025-08-29 18:47:40",
  "slug": "test-template",
  "subject": "test",
  "text": "test",
  "updated_at": "2025-08-29 18:47:40.26277"
}

Updates the code for an existing template. If null is provided for any fields, the values will remain unchanged.

Request

This endpoint expects an object.

keystringRequired

A valid Mandrill API key

namestringRequired

Immutable name of an existing template

from_emailstring or nullOptionalformat: "email"

New default sending address

from_namestring or nullOptional

New default from name

subjectstring or nullOptional

New default subject line

codestring or nullOptional

New code for the template

textstring or nullOptional

New default text part to be used

publishbooleanOptionalDefaults to true

Set to false to update the draft version without publishing

labelslist of strings or nullOptional

Optional array of up to 10 labels to use for filtering templates

Response

Success

Errors

401

Unauthorized Error

404

Not Found Error

500

Internal Server Error