The post office says some of the mail which has arrived on Island today has been water damaged.
Officials say the matter has been raised with Royal Mail to investigate how it's happened.
Deliveries will still be made as normal today however the postal service is apologising in advance if any items people receive have been affected.
Anyone with any queries on the matter can contact customer services on 664 664.
Survey will ask for views on Peel's beach stage
Coal fund announces first distribution date
Onchan recount confirms September's general election result
Fake TV licensing tops fraud email reports
DOI doesn't keep track of total staff overtime
Anagh Coar flats fire under investigation
Airport looking for new £112k a year air traffic control head
Dog mess near play area and sports field sparks warning in Andreas