Your agent decided to send it. Truncus makes sure it actually happened.

# Synchronous — agent knows immediately if it worked
curl -X POST https://truncus.co/api/v1/emails/send_sync \
  -H "Authorization: Bearer tr_live_…" \
  -H "Idempotency-Key: <uuid>" \
  -d '{ "from": "billing@yourapp.com", "to": "customer@example.com",
        "subject": "Your invoice", "html": "<p>Thanks.</p>" }'

# Returns:
{
  "message_id": "cmvxr6q4q000120ajvvjpxhq8",
  "global_message_id": "gm_8b96f356-f7e9-472e-bbe4-88a9be1651b5",
  "status": "delivered",
  "delivered_at": "2026-11-01T11:35:11.909Z",
  "smtp_response": "250 2.0.0 Ok: queued as 4jHXnV4rtkz9vNPx",
  "latency_ms": 2080
}

# Create a durable operation — Truncus retries for you
op = truncus.operations.create(
    type="email.send",
    delivery_guarantee="at_least_once",
    params={
        "from": "support@yourapp.com",
        "to": user.email,
        "subject": "Your account is ready",
        "html": welcome_html,
    },
    retry_policy={"max_retries": 3, "backoff_ms": 5000},
)

# Check later (or let the webhook notify you)
status = truncus.operations.get(op.operation_id)
# { status: "completed", attempts: 1, provider: "ses" }
# Retries happen on SES (eu-west-1) with backoff — never silently dropped

# Validate before wasting a send
check = truncus.emails.validate(
    from_address="agent@yourapp.com",
    to=prospect.email,
)

if check.recommendation == "do_not_send":
    skip_prospect(prospect.id, reason=check.checks.spam_risk)
elif check.confidence_score > 0.8:
    send_email(prospect)  # see the curl call below

# curl -X POST https://truncus.co/api/v1/emails/send_sync \
#   -H "Authorization: Bearer tr_live_…" \
#   -H "Idempotency-Key: <uuid>" \
#   -d '{ "from": "agent@yourapp.com", "to": "prospect@example.com",
#         "subject": "Partnership opportunity", "html": "<p>Hello.</p>" }'