Email Provider: EmailJS (frontend, free) ya SMTP (domain email, professional) — ek select karein.

Setup Guide:
1. emailjs.com par jayein → FREE account banayein
2. Email Services → Add Service → Gmail ya apni email connect karein
3. Email Templates → Create Template → OTP template banayein
4. OTP Template mein yeh variables use karein: {{to_email}} {{otp_code}} {{site_name}} {{purpose}}
5. Account → API Keys se Public Key copy karein
6. Neeche saari details fill karein aur Save karein

Domain Email Setup Guide (cPanel):

Step 1 — cPanel mein Email Account banayein:
• cPanel login karein → Email Accounts → Create
• Email: [email protected] ya [email protected]
• Strong password set karein

Step 2 — SMTP Details nikaalein:
• cPanel → Email Accounts → Connect Devices button
• Ya yeh use karein:
  Host: mail.yourdomain.com
  Port: 465 (SSL) ya 587 (TLS)
  Username: [email protected] (full email)
  Password: email account ka password

Step 3 — Neeche details fill karein → Save → Test Email bhejein

Dhru: Settings save karein phir "Sync Services" dabayein — Dhru ki saari services import ho jayengi.

Format: POST {url}/order → { api_key, service_id, imei } → Response: { success, order_id }