Brexit changes mean people will soon have to fill in customs declarations for all goods being sent further than the UK.
The changes come in on January 1 and the Isle of Man Post Office says any goods sent to international destinations need accurate customs documents, either electronically or on paper.
It'll include information about the sender, recipient and contents.
Geoff Rickard of the Post office says in the past declaration forms were needed to for countries beyond Europe, but after Brexit all European countries will need them too - otherwise mail could be delayed or returned.
Police investigating Irish 'paedophile hunter' video
Updated rules for special constables due before Tynwald
Pre-election meeting in Marown next month
Microwave food leads to early hours callout for firefighters
Vigil to mark three years of war in Gaza
Your chance to vote for Island in travel awards
MHKs to elect speaker and deputy this week
FOI answer 'could undermine prison security'