Update Draft

Partially updates an existing draft. Only the provided fields will be updated.

PATCH /inbox/{contactId}/drafts/{draftId}

Update Draft

cURL

curl --request PATCH \
  --url https://api.lemlist.com/api/inbox/{contactId}/drafts/{draftId} \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "subject": "Updated subject",
  "content": "<p>Updated content for the draft.</p>"
}
'

import requests

url = "https://api.lemlist.com/api/inbox/{contactId}/drafts/{draftId}"

payload = {
    "subject": "Updated subject",
    "content": "<p>Updated content for the draft.</p>"
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({subject: 'Updated subject', content: '<p>Updated content for the draft.</p>'})
};

fetch('https://api.lemlist.com/api/inbox/{contactId}/drafts/{draftId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

require 'uri'
require 'net/http'

url = URI("https://api.lemlist.com/api/inbox/{contactId}/drafts/{draftId}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"subject\": \"Updated subject\",\n  \"content\": \"<p>Updated content for the draft.</p>\"\n}"

response = http.request(request)
puts response.read_body

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.lemlist.com/api/inbox/{contactId}/drafts/{draftId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'subject' => 'Updated subject',
    'content' => '<p>Updated content for the draft.</p>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

200

{
  "draft": {
    "_id": "drf_abc123def456789",
    "channel": "email",
    "subject": "Updated subject",
    "cc": [],
    "content": "<p>Updated content for the draft.</p>",
    "attachments": [],
    "source": "api",
    "createdAt": "2025-01-15T10:30:00.000Z",
    "updatedAt": "2025-01-15T11:00:00.000Z"
  }
}

"Content must not be empty"

"The authentication you supplied is incorrect"

"Draft not found"

The draftOwner query parameter is required and identifies the draft owner. It accepts either:

• A userId (e.g., usr_abc123def456789) — used directly
• A login email (e.g., [e-mail]) — resolved to userId via email lookup

This follows the same pattern as contactOwner in the Lead API. Team membership is verified in both cases.

Validations:

• If content is provided, it must not be empty and has a max size of 30KB (30,000 characters)
• content and subject are sanitized for security
• updatedAt is set automatically

Authorizations

Authorization · string · header · required

Basic authentication header of the form Basic <encoded-value>, where <encoded-value> is the base64-encoded string username:password.

Path Parameters

contactId · string · required

Contact ID

draftId · string · required

Draft ID

Query Parameters

draftOwner · string · required

Draft owner identifier. Accepts either a userId (e.g., usr_abc123def456789) or a login email (e.g., [e-mail]).

Body

application/json

subject · string

Draft subject

cc · string[]

CC email addresses

content · string

Draft content (max 30KB)

attachments · object[]

File attachments

Show child attributes

replyToActivityId · string

Activity ID to reply to

Response

200

application/json

Success

draft · object

Show child attributes