Email addresses with capital letters

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  • November 12, 2019 at 12:25 pm #38186
    Wheels-Of-FireWheels-Of-Fire
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      @grahamdearsley
      Forumite Points: 4

      Someone recently gave me their new email address and they had spelt their name with capital letters, I tried to send them a mail but I used all lower case letters as usual and it did not go through. Spelling with the upper case letters DID go through so I decided to investigate 🤔

      It would appear that domain name servers are still case insensitive, they just convert everything to lower case, but some mail servers, like Gmail and Outlook, ARE now case sensitive.

      Me@hotmail.com is a different account to me@hotmail.com

      November 12, 2019 at 3:10 pm #38189
      blacklion1725blacklion1725
      Participant
        @blacklion1725
        Forumite Points: 2

        Interesting – a building society account I set up recently populated everything in capitals (online application form) regardless of if you typed lower or upper case. So my email according to them is all in capitals. I can understand that the email addresses are treated as case sensitive, but can only assume email providers would never issue both Me@hotmail.com and me@hotmail.com (answer your example?).

        In my case I am getting the emails from the building society – who knows!

        November 12, 2019 at 4:34 pm #38191
        Wheels-Of-FireWheels-Of-Fire
        Participant
          @grahamdearsley
          Forumite Points: 4

          It is up to your mail server provider how they handle user names but it used to be that they all had to be lower case. Not any more it would seem.

          Having looked it up, it is common practice for companies like Microsoft and Google to assign various combinations of upper and lower case names as aliases to the same account so that you get your mail however people type it.

          November 12, 2019 at 5:11 pm #38192
          Wheels-Of-FireWheels-Of-Fire
          Participant
            @grahamdearsley
            Forumite Points: 4

            https://tools.ietf.org/html/rfc6531

            Anyone wanting to know the full details of what has changed with the SMTP Extensions can find most of them in the link above.

            Good luck picking the bones out of that though 😂

            November 12, 2019 at 6:53 pm #38199
            Bob WilliamsBob Williams
            Participant
              @bullstuff2
              Forumite Points: 0

              I started to read that Graham, but my brain turned into jelly about halfway down.

              When the Thought Police arrive at your door, think -
              I'm out.

              November 12, 2019 at 8:13 pm #38203
              Wheels-Of-FireWheels-Of-Fire
              Participant
                @grahamdearsley
                Forumite Points: 4

                Yep, its not really ment for public consumption 🤣 it is publish by the Internet Engineering Task Force for the writers of low level networking software and firmware. The Wiki on SMTP is much more user friendly but it leaves out many of the extension details 😀

                November 12, 2019 at 8:16 pm #38204
                Wheels-Of-FireWheels-Of-Fire
                Participant
                  @grahamdearsley
                  Forumite Points: 4

                  https://en.m.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol

                  The Wiki link is above.

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