The Post Office says time's running out if you want to send cards and gifts to arrive in time for Christmas.
It's issued a list of recommended last postal dates, with the deadline for armed forces personnel coming up at the end of this week.
Mail for static BFPO addresses needs to be posted by Friday to make sure it'll get to its destination in time.
Standard letters and parcels to the UK need to be posted by December 18, while the last date for on-Island cards is December 20.