I have been unable to locate Maltapost's e-mail address on the web.
The present lead hand-stamps used to cancel stamps, inherited from the former Malta Post Office, are really old fashioned and smudgy. One can compare them to the neat rubber hand- or machine-stamps used by most countries and see the difference. Here, date and town are clearly printed, unlike in the Malta hand-stamps. I am sure this old situation can be corrected at a reasonable cost.