Written with people moving from Turkey in mind. The Portuguese rules still apply more broadly.
Mail Redirection Service
When moving houses, you can pay CTT to redirect your mail to your new address for 3, 6, or 12 months. This is crucial for receiving AIMA notifications or bank cards sent to your old address.
You must apply at a CTT branch at least 3 days before you move. The service costs around €20 for 3 months but saves you the headache of missing vital government correspondence.