# CTT Express Guide

CTT Express is the express mail and parcel subsidiary of CTT – Correios de Portugal, the national postal service of Portugal.
It primarily operates as a courier and logistics operator throughout the Iberian Peninsula, handling B2B and B2C express
shipments and e-commerce deliveries. CTT Express also supports international shipment logistics.

This guide provides detailed information on utilizing CTT Express shipping with the EasyPost API,
focusing on account setup, rates, label creation, manifests, tracking, and more.

---

## Carrier Account Registration

### Account Registration

Sign up for an EasyPost account to obtain a **Test** and **Production** API
key. See Authentication and Key Management for more information.

> Note: Negotiated rates are only available in Production mode.

### CTT Express Account Registration

1. Contact CTT Express to request a shipper account. A representative will
   be in touch for additional details regarding the account.
2. Inform CTT Express about using EasyPost’s API for label purchases.
3. Acquire rates and align any additional shipping needs.
4. Provide EasyPost with the following information:
   1. Client_id
   2. Contract_id
   3. Distribution_channel_id
   4. Authentication_id
   5. User_id

### CTT Express Account via API

The API structure specified by EasyPost can also be used to add the CTT Express carrier shipper account.

```shell
curl -X POST https://api.easypost.com/v2/carrier_accounts \
  -u "$EASYPOST_API_KEY": \
  -H 'Content-Type: application/json' \
  -d '{
  "carrier_account": {
    "type": "CttExpressAccount",
    "description": "CttExpressAccount",
    "credentials": {
      "authentication_id": "VALUE",
      "client_id": "VALUE",
      "contract_id": "VALUE",
      "distribution_channel_id": "VALUE",
      "user_id": "VALUE"
    },
    "test_credentials": {
      "authentication_id": "VALUE",
      "client_id": "VALUE",
      "contract_id": "VALUE",
      "distribution_channel_id": "VALUE",
      "user_id": "VALUE"
    }
  }
}'
```

### Software Requirements

Download an EasyPost Client Library or utilize the REST API with cURL.

### Documentation Review

Examine the EasyPost Objects section to understand the API's structure, which is critical for constructing requests and interpreting responses.

Related:

- [Getting Started Guide](https://docs.easypost.com/guides/getting-started)
- [Manage Carrier Accounts](https://app.easypost.com/account/settings?tab=carriers)

---

## Rates

### Default Rate Display

- EasyPost initially returns a one-cent rate for shipments once the CTT Express account is set up.
- CTT Express will charge the appropriate amount for postage via their billing system.

### Rate Card

- CTT Express representatives provide rate cards detailing expected costs based on shipment parameters (package size, weight, location, etc.).
- Acquiring this custom rate card from CTT Express is required to receive custom negotiated rates as part of the API rate response.

### Rate Card Integration

- Once the rate card is received from CTT Express, users should contact EasyPost support at support@easypost.com for assistance installing this rate card to their account.

---

## Billing

Billing is handled directly by CTT Express and follows a **bill-on-scan** model.

- Charges are applied when the shipment is scanned into the CTT Express network, not at the time of label creation.
- EasyPost is not involved in the billing process.
- All invoices, adjustments, and billing inquiries are managed through CTT Express.

---

## Service Levels

CTT Express Codes are automatically selected per shipment based on the shipment type; however,
service levels may also be configured per shipper account.

CTT Express supports the following Service Codes:

Service levels are generated from live carrier metadata and are not included in this file. Retrieve them from the Carrier Metadata endpoint: https://docs.easypost.com/docs/carrier-metadata. Use `carrier=ehub`.

---

## Hazardous Materials (HAZMAT)

Hazmat shipments are **not** supported.

---

## Pickups

Pickups are **not** supported.

---

## Tracking

Tracking is **not** supported.

---

## Additional Resources

### Carrier Metadata

The Carrier Metadata endpoint can programmatically return information about service
levels, predefined packages, supported features, and shipment options.

Use this information to quickly integrate and make educated decisions about the mix of carriers for shipping needs. Additionally,
the Carrier Metadata endpoint is available to retrieve comprehensive information about
all carriers on the EasyPost platform, enhancing decision-making for carrier services.

### Support and Troubleshooting

In addition to the guidance provided in our Carrier Guides, EasyPost offers support to assist with FAQs, troubleshooting issues, and inquiries related to the EasyPost platform.

Please visit the Help Center for more information.

Related:

- [Carrier Metadata](https://docs.easypost.com/docs/carrier-metadata)
- [Help Center](https://support.easypost.com/hc/en-us)

---

## Talk to a Shipping Expert

For questions about getting started with the EasyPost API please talk to a Shipping Expert or Contact Support.

Related:

- [Talk to a Shipping Expert](https://www.easypost.com/talk-to-easypost)
- [Contact Support](https://support.easypost.com/hc/requests/new)