curl --request PATCH \
  --url https://api.lemlist.com/api/campaigns/{campaignId}/settings \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "tracking": {
    "trackOpens": false,
    "trackClicks": false
  },
  "automation": {
    "autoReview": true,
    "autoReviewConditions": [
      "deliverable"
    ]
  },
  "onReplied": {
    "campaignProgress": "pause"
  }
}
'

import requests

url = "https://api.lemlist.com/api/campaigns/{campaignId}/settings"

payload = {
    "tracking": {
        "trackOpens": False,
        "trackClicks": False
    },
    "automation": {
        "autoReview": True,
        "autoReviewConditions": ["deliverable"]
    },
    "onReplied": { "campaignProgress": "pause" }
}
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({
    tracking: {trackOpens: false, trackClicks: false},
    automation: {autoReview: true, autoReviewConditions: ['deliverable']},
    onReplied: {campaignProgress: 'pause'}
  })
};

fetch('https://api.lemlist.com/api/campaigns/{campaignId}/settings', 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/campaigns/{campaignId}/settings")

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  \"tracking\": {\n    \"trackOpens\": false,\n    \"trackClicks\": false\n  },\n  \"automation\": {\n    \"autoReview\": true,\n    \"autoReviewConditions\": [\n      \"deliverable\"\n    ]\n  },\n  \"onReplied\": {\n    \"campaignProgress\": \"pause\"\n  }\n}"

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

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.lemlist.com/api/campaigns/{campaignId}/settings",
  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([
    'tracking' => [
        'trackOpens' => false,
        'trackClicks' => false
    ],
    'automation' => [
        'autoReview' => true,
        'autoReviewConditions' => [
                'deliverable'
        ]
    ],
    'onReplied' => [
        'campaignProgress' => 'pause'
    ]
  ]),
  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;
}

{
  "campaignId": "cam_hNtZRPpyNP6HRp4PV",
  "timezone": "Europe/Paris",
  "senderStrategy": "random",
  "general": {
    "labels": [
      {
        "id": "lab_aHYwTgdfZU1GpO47A",
        "name": "Outbound"
      }
    ],
    "sequenceId": "seq_4LUxRGgCy7MGaQq0c",
    "sequenceSharing": false,
    "unsubscribeMode": "contact",
    "addUnsubscribeLink": true,
    "unsubscribeLinkText": "Unsubscribe"
  },
  "senders": {
    "espMatching": true,
    "espRouting": {
      "gmail": "gmail",
      "outlook": "outlook",
      "other": "other"
    }
  },
  "automation": {
    "autoReview": true,
    "autoReviewConditions": [
      "deliverable"
    ]
  },
  "tracking": {
    "trackOpens": false,
    "trackClicks": false,
    "trackReplies": true
  },
  "onReplied": {
    "createNewTask": false,
    "campaignProgress": "pause",
    "propagateProgressToCompany": false,
    "disableOutOfOffice": false
  },
  "onLinkClicked": {
    "createNewTask": false,
    "campaignProgress": "continue",
    "propagateProgressToCompany": false,
    "specificLinks": []
  },
  "onMeetingBooked": {
    "campaignProgress": "stop",
    "propagateProgressToCompany": true
  },
  "aiFeatures": {
    "scoreReplies": true,
    "onInterestedReply": {
      "enabled": true,
      "pauseAllCampaignsForLead": true,
      "pauseCampaignForCompany": false,
      "pauseAllCampaignsForCompany": false
    },
    "onNotInterestedReply": {
      "enabled": false,
      "pauseAllCampaignsForLead": false,
      "pauseCampaignForCompany": false,
      "pauseAllCampaignsForCompany": false
    }
  },
  "schedule": {
    "isTimezoneBasedSchedule": false,
    "timezoneBasedScheduleId": null,
    "scheduleIds": [
      "skd_NHanXKczmWCI0tl1m"
    ],
    "holidayCountries": [
      "FR"
    ],
    "sendingPattern": {
      "newLeadsPriorityRatio": 0.5
    }
  }
}

{
  "error": "Invalid campaign settings",
  "code": "CAMPAIGN_SETTINGS_INVALID_INPUT",
  "details": {
    "issues": [
      {
        "field": "general.labels",
        "code": "CAMPAIGN_SETTINGS_READ_ONLY_FIELD",
        "message": "Read-only: returned by GET, not writable with PATCH"
      },
      {
        "field": "onReplied.campaignProgress",
        "code": "invalid_value",
        "message": "Invalid option: expected one of \"continue\"|\"pause\"|\"stop\""
      }
    ]
  }
}

The authentication you supplied is incorrect

route is available starting emailPro plan

{
  "error": "Campaign not found",
  "code": "CAMPAIGN_NOT_FOUND"
}

{
  "error": "Route bad method",
  "code": "ROUTE_BAD_METHOD"
}

{
  "error": "Auto-review needs a custom tracking domain. Set one up, or send tracking: { trackOpens: false, trackClicks: false } in the same request",
  "code": "CAMPAIGN_SETTINGS_AUTO_REVIEW_REQUIRES_CTD"
}