Many of BSkyB customers have received thousands of old and deleted messages following the company’s switchover of email providers to Yahoo from Google.

BBC reported that the switch has seemingly resurrected many messages users formerly deleted with some reporting that they had to go through thousands of messages before deleting them for a second time.

Sky apologised to the customers and said it was aware of the issue and investigation is going on to resolve it.

The company advised account holders to sign in through the web-based version of Sky’s email service to minimise the chance of the issues affecting them.

Sky added that if the users changed email connection settings from IMAP to POP or vice versa, then customers need to be aware that these two connection types behave slightly differently.

BSkyB currently has 4.2 million broadband customers and 4 million telephony customers.