Maltapost's website has been off line since April 22 because of server problems.
Readers complained to timesofmalta.com that the postal company's website had been down for days and they had no other means of checking postcodes and tracking parcels.
A Maltapost spokesman said the company was working to restore the service by the end of this week.
The spokesman said that for assistance, customers should call 2122 4421.