Home FAQ Why shouldn’t I save attachments in my mailbox? PT Because email is not a storage location. Saving attachments elsewhere reduces the size of your mailbox and improves security.How do I do this in Outlook?To save attachments outside of emailOpen the email.Right-click on the attachment.Select Save as.Select OneDrive, SharePoint, or a local folder that syncs with the cloud. Related Previous Where should I save attachments for individual use? Next What useful Outlook features should I use?