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my OS is win 10 pro 64 bit and I use Outlook owa and i have the Office 365 Business Essentials account. <br />
In my Outlook email, I use msn email, the free version. &nbsp;<br />
From time to time I get emails and sometimes they are similar offers but from different email accounts. <br />
Is it possible by looking at the headers if I could ascertain that Email sender A and Email sender B, are actually the same person from the same location, etc. &nbsp;If yes, how and where do I look for this information. &nbsp;Or is there any software that could do this or a web site. Thank u
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my OS is win 10 pro 64 bit and I use Outlook owa and i have the Office 365 Business Essentials account. 
In my Outlook email, I use msn email, the free version.  
From time to time I get emails and sometimes they are similar offers but from different email accounts. 
Is it possible by looking at the headers if I could ascertain that Email sender A and Email sender B, are actually the same person from the same location, etc.  If yes, how and where do I look for this information.  Or is there any software that could do this or a web site. Thank u

Email Headers

An email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email. A web application that provides message management, composition, and reception functions may internally act as an email client; as a whole, it is commonly referred to as webmail. Likewise, email client may be referred to a piece of computer hardware or software whose primary or most visible role is to work as an email client. Email clients can also have other systems, like calendars, notes and contact managers.

Email Clients

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.

Microsoft Office

Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. For large systems, the operating system makes sure that different programs and users running at the same time do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system. Operating systems provide a software platform on top of which other programs, called application programs, can run.

Operating Systems

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

An email client, email reader or more formally mail user agent (MUA) is a computer program used to access and manage a user's email. A web application that provides message management, composition, and reception functions is sometimes also considered an email client, but more commonly referred to as webmail.