curl -X POST "https://server.smartlead.ai/api/v1/campaigns/123/leads/456/resume?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"resume_lead_with_delay_days": 3}'

import requests

API_KEY = "YOUR_API_KEY"
campaign_id = 123
lead_id = 456

# Resume with custom delay
payload = {
    "resume_lead_with_delay_days": 3
}

response = requests.post(
    f"https://server.smartlead.ai/api/v1/campaigns/{campaign_id}/leads/{lead_id}/resume",
    params={"api_key": API_KEY},
    json=payload
)

result = response.json()
if result.get('ok'):
    print(f"Lead {lead_id} resumed with {payload['resume_lead_with_delay_days']} day delay")

# Or resume with default delay
response = requests.post(
    f"https://server.smartlead.ai/api/v1/campaigns/{campaign_id}/leads/{lead_id}/resume",
    params={"api_key": API_KEY},
    json={}
)

const API_KEY = 'YOUR_API_KEY';
const campaignId = 123;
const leadId = 456;

// Resume with custom delay
const payload = {
  resume_lead_with_delay_days: 3
};

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

const result = await response.json();
if (result.ok) {
  console.log(`Lead ${leadId} resumed with ${payload.resume_lead_with_delay_days} day delay`);
}

{
  "ok": true,
  "data": "success"
}

{
  "message": "Invalid API Key"
}

{
  "error": "Campaign not found - Invalid campaign_id."
}

{
  "error": "This is the last sequence. You cannot resume this lead."
}

{
  "error": "Invalid lead id"
}