Security of Windows 10 mail

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  1. Caledon Ken's Avatar
    Posts : 24,260
    Windows 10 Pro x64 Version 2004

    I may have this wrong so a good discussion. My understanding is all mail going back and forth to the server is encrypted as part of the connection regardless if I use a browser or a client.

    The mail on my device, if I stored, is not encrypted (assuming no product like Bitlocker) the mail on the server is also not encrypted.

    It was my understanding that the only time mail could be snooped, assuming you are using a secure connection / secure client, is when it is out on the net going from provider to provider.

    Here is my Outlook 2013 setup and mail moves on an encrypted connection.

    Security of Windows 10 mail-image.png
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  2. Posts : 58
    Microsoft Windows 10 Pro 64-bit
    Thread Starter

    Well, technically, when you get email through a browser, it's not really an email transmission right? It's http(s) protocol'ed text(garbled text) that gets "formatted" into what looks like an email list/message, right?
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  3. bro67's Avatar
    Posts : 8,353
    Mac OS Catalina

    This should help give you a start in sorting things out.

    How Webmail works
    How Email Works - Runbox
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  4. Mystere's Avatar
    Posts : 3,257
    Windows 10 Pro

    Ok, lots of confusion here. Let's set the record straight here.

    1) Email sent from your email server to another email server is (almost) never encrypted unless you have encrypted the contents yourself (and even then the message itself is unencrypted, so headers and some content is unencrypted.

    2) Email sent from an email client to your server *might* be encrypted, if the client and server both support it, and it's configured to use it.

    3) Webmail (Hotmail, gmail, etc) uses HTTPS (at least in the major services) to present a web page that has your email in it. Thus, the connection between you and the webmail server is encrypted, but again the mail sent between the webmail server and it's destination is (mostly) unencrypted.

    *) There may be some exceptions. For instance, if you send email from one gmail user to another gmail user (or hotmail user to another hotmail user, or yahoo user to another yahoo user, etc..), the transmission may be encrypted internally (we don't really know, but I would guess it is).

    *) Some of the big services are working on an encrypted email standard, but I'm not really sure where it's at right now. See Tech giants are collaborating on secure email

    Finally, to answer the original question, yes. Microsoft's mail client uses encryption (by default with MS's servers as well as (I assume) gmail, yahoo, exchange, etc..), but you may have to configure it if you're using another server)
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