curl -sS -X POST "https://api.mailofly.com/v1/emails" \
  -H "Authorization: Bearer mf_live_…" \
  -H "Content-Type: application/json" \
  -d '{
    "from": "Acme <welcome@example.com>",
    "to": ["newuser@example.com"],
    "template": {
      "id": "welcome-template-uuid",
      "variables": { "first_name": "Alex" }
    }
  }'

# Upsert a contact
curl -sS -X POST "https://api.mailofly.com/v1/contacts" \
  -H "Authorization: Bearer mf_live_…" \
  -H "Content-Type: application/json" \
  -d '{
    "email": "user@example.com",
    "first_name": "Alex",
    "custom_fields": { "plan": "pro" }
  }'

# Add to a segment
curl -sS -X POST "https://api.mailofly.com/v1/segments/SEGMENT_ID/contacts" \
  -H "Authorization: Bearer mf_live_…" \
  -H "Content-Type: application/json" \
  -d '{ "contact_id": "CONTACT_UUID" }'

curl -sS -X POST "https://api.mailofly.com/v1/campaigns/CAMPAIGN_ID/send" \
  -H "Authorization: Bearer mf_live_…" \
  -H "Content-Type: application/json" \
  -d '{ "sendNow": true }'

curl -sS "https://api.mailofly.com/v1/mail-logs?status=failed&page_size=20" \
  -H "Authorization: Bearer mf_live_…"

const res = await fetch("https://api.mailofly.com/v1/emails", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.MAILOFLY_API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify(payload),
});

if (!res.ok) {
  const err = await res.json();
  // { error: "…", message: "…" }
  throw new Error(err.message);
}

const { data } = await res.json();