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PUT
/
templates
/
{id}
Update a template
curl --request PUT \
  --url https://api.sendkit.dev/templates/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "sender_id": "550e8400-e29b-41d4-a716-446655440000",
  "subject": "Welcome to {{COMPANY}}",
  "name": "Updated Welcome Email",
  "html_content": "<h1>Welcome, {{FIRST_NAME}}!</h1>",
  "text_content": "Welcome, {{FIRST_NAME}}!",
  "reply_to": "support@yourdomain.com",
  "status": "published",
  "variables": [
    {
      "key": "FIRST_NAME",
      "type": "string",
      "fallback_value": "there"
    }
  ]
}
'
{
  "id": "550e8400-e29b-41d4-a716-446655440000",
  "name": "Welcome Email",
  "subject": "Welcome to {{COMPANY}}",
  "html_content": "<h1>Welcome, {{FIRST_NAME}}!</h1><p>Thanks for joining.</p>",
  "text_content": "Welcome, {{FIRST_NAME}}! Thanks for joining.",
  "reply_to": "support@yourdomain.com",
  "status": "published",
  "sender": {
    "id": "550e8400-e29b-41d4-a716-446655440000",
    "name": "John Doe",
    "username": "john",
    "email": "john@yourdomain.com",
    "reply_to": "reply@yourdomain.com",
    "created_at": "2026-03-03 10:00:00",
    "updated_at": "2026-03-03 10:00:00"
  },
  "variables": [
    {
      "key": "FIRST_NAME",
      "type": "string",
      "fallback_value": "there"
    }
  ],
  "created_at": "2026-03-03 10:00:00",
  "updated_at": "2026-03-03 10:00:00"
}

Authorizations

​
Authorization
string
header
required

API key from your SendKit dashboard. Pass it as a Bearer token in the Authorization header.

Path Parameters

​
id
string<uuid>
required

The template ID.

Body

application/json
​
sender_id
string<uuid>
required

The ID of the sender to use for this template. Must belong to your account.

Example:

"550e8400-e29b-41d4-a716-446655440000"

​
subject
string
required

The email subject line. Supports {{VARIABLE}} placeholders.

Maximum string length: 255
Example:

"Welcome to {{COMPANY}}"

​
name
string

The name of the template.

Maximum string length: 255
Example:

"Updated Welcome Email"

​
html_content
string | null

The HTML content of the template. Supports {{VARIABLE}} placeholders.

Example:

"<h1>Welcome, {{FIRST_NAME}}!</h1>"

​
text_content
string | null

The plain text content of the template. Supports {{VARIABLE}} placeholders.

Example:

"Welcome, {{FIRST_NAME}}!"

​
reply_to
string<email> | null

The reply-to email address.

Maximum string length: 255
Example:

"support@yourdomain.com"

​
status
enum<string>

The template status.

Available options:
published,
draft
Example:

"published"

​
variables
object[] | null

Template variables configuration.

Response

Template updated successfully

​
id
string<uuid>

Unique identifier.

Example:

"550e8400-e29b-41d4-a716-446655440000"

​
name
string

The name of the template.

Example:

"Welcome Email"

​
subject
string

The email subject line.

Example:

"Welcome to {{COMPANY}}"

​
html_content
string | null

The HTML content of the template.

Example:

"<h1>Welcome, {{FIRST_NAME}}!</h1><p>Thanks for joining.</p>"

​
text_content
string | null

The plain text content of the template.

Example:

"Welcome, {{FIRST_NAME}}! Thanks for joining."

​
reply_to
string<email> | null

The reply-to email address for emails sent with this template.

Example:

"support@yourdomain.com"

​
status
enum<string>

The template status. Only published templates can be used for sending.

Available options:
published,
draft
Example:

"published"

​
sender
object

The sender associated with this template.

​
variables
object[] | null

The template variables and their configuration.

​
created_at
string<date-time>

When the template was created.

Example:

"2026-03-03 10:00:00"

​
updated_at
string<date-time>

When the template was last updated.

Example:

"2026-03-03 10:00:00"