English always needed for threading analysis

Email container files (.pst, or .nsf archive files) don’t usually contain email header file names (from; to; cc; bcc; subject). Processing software will assign the header field names, and often use English terms by default regardless of the content of the messages. So even if you have emails in one or more foreign languages, threading analytics tools should always have English as one of the selected languages.

Tracking the Origin of an Email

Forensic tools exist which can analyze email headers to find the IP address of the computer a message was sent from, and also the geographic location it was sent from. eMailTrackerPro is an example of a tool which performs this task. eMailTrackerPro will help you track the origin of all emails in a particular account.

If you want to check the header of an individual email without software, you can use Google Toolbox's Messageheader, available here: https://toolbox.googleapps.com/apps/messageheader/

Input the header of the email into the toolbox, and click the option to analyze it.

You'll be able to lookup the location of the IP address and the associated ISP provider with online tools such as: https://www.iplocation.net/ip-lookup

Outlook.com Data Lost After 2 Years of Inactivity

When performing electronic discovery for web based email accounts, keep in mind that a outlook.com account may become disabled if a user has not logged in for more than 2 years. After this period, may not be possible to recover the data for the account at all. Outlook reserves the right to delete the data.

See the services agreement posted here.

OneDrive accounts will be closed after more than one year of inactivity. After a user voluntarily closes their email account, Microsoft will still permit it to be reactivated for another 60 days.