
It appears that many of these addresses are personal, rather than professional. It seems that the archive export includes all emails associated with an account, not just the one designated as primary. In addition, the current data archive export feature of LinkedIn allows users to download their connections’ email addresses in bulk. While the primary address may be changed to another email in your account settings, there is no way to prevent your contacts from visiting your profile and viewing there whatever email you chose to be primary. By default, the primary email address is the one that was used to sign up for LinkedIn. LinkedIn makes the primary email address associated with an account visible to all direct connections, as well as to people who have your email address in their contacts lists.
