curl -X POST "https://server.smartlead.ai/api/v1/campaigns/12345/reply-email-thread?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "email_stats_id": "abc-123",
    "email_body": "Thanks for your interest! Let me know if you have any questions.",
    "add_signature": true
  }'

import requests

API_KEY = "YOUR_API_KEY"
CAMPAIGN_ID = 12345

def send_reply(campaign_id, email_stats_id, body, schedule_time=None, add_signature=True):
    payload = {
        "email_stats_id": email_stats_id,
        "email_body": body,
        "add_signature": add_signature
    }

    if schedule_time:
        payload["scheduled_time"] = schedule_time

    response = requests.post(
        f"https://server.smartlead.ai/api/v1/campaigns/{campaign_id}/reply-email-thread",
        params={"api_key": API_KEY},
        json=payload
    )

    return response.json()

# Send immediate reply
send_reply(CAMPAIGN_ID, "abc-123", "Thanks for your interest!")

# Schedule reply for tomorrow 9 AM
from datetime import datetime, timedelta
tomorrow_9am = (datetime.now() + timedelta(days=1)).replace(hour=9, minute=0).isoformat() + 'Z'
send_reply(CAMPAIGN_ID, "abc-124", "Following up on our previous conversation", schedule_time=tomorrow_9am)

const API_KEY = 'YOUR_API_KEY';
const CAMPAIGN_ID = 12345;

async function sendReply(campaignId, emailStatsId, body, options = {}) {
  const payload = {
    email_stats_id: emailStatsId,
    email_body: body,
    add_signature: options.add_signature !== false,
    ...options
  };

  const response = await fetch(
    `https://server.smartlead.ai/api/v1/campaigns/${campaignId}/reply-email-thread?api_key=${API_KEY}`,
    {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(payload)
    }
  );

  return response.json();
}

// Send reply
await sendReply(CAMPAIGN_ID, 'abc-123', 'Happy to help!');