BT is offering 1GB of free online storage to Mac users.

Apple's .Mac service offers members 1GB of storage as part of the £68.99 annual subscription-based offering, which also offers integration with OS X.

BT is going one better, offering BT Total Broadband customers 5GB of online storage. It's not limited to customers - non-customers can also sign-up to exploit a free 1GB of storage space on BT's servers.

The storage is being offered within the BT Digital Vault service. BT Total Broadband customers will now receive 5GB storage with Auto Backup (PC only software) for files and photos.

Users can access their files online using most web browsers, including Safari on a Mac.

Customers subscribing to BT Total Broadband Option 1 and 2 will  receive Auto Backup for free for the first six months, while Option 3 customers will get 5GB of storage and Auto Backup as a permanent feature.

Emma Sanderson, director of value-added services at BT Retail, said: “Our research has shown that many consumers are not safely storing their precious photos and files, not thinking about it until it is too late and they have lost everything. Now we are making it easy for BT Total Broadband customers to securely store, backup and share their digital valuables in one place online.”

BT Digital Vault Plus with 20GB storage and Auto Backup is also available at £4.99 per month and BT Digital Vault Basic with 1GB storage is available free to non BT Total Broadband customers.