When an email server has a message from a sender to multiple recipients with an attachment file, an attachment application is activated. The attachment application stores preferences of email users for online storage locations. The method carried out extracts details of an email sender and recipients for the email message to be sent with an attachment file and compares the email sender and recipients with the stored preferences for online storage locations to select a common online storage location for the sender and recipients. A directory is created at the common online storage location for uploading the attachment file to the selected online storage location and the address of the attachment file at the selected online storage location is added to the email message. If a common online storage location is not available, a new account can be generated for the recipients at an online storage location.