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  1. #1
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    Are e-mail addresses case sensitive?

    Hello, Does it matter if you type XYZ@gmail.com instead of xyz@gmail.com? Is it case sensitive?

    <snip>
    Last edited by spikeZ; Feb 8, 2013 at 03:30. Reason: Unnecessary link removed

  2. #2
    dooby dooby doo silver trophybronze trophy
    spikeZ's Avatar
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    no.
    Mike Swiffin - Community Team Advisor
    Only a woman can read between the lines of a one word answer.....

  3. #3
    #titanic {float:none} silver trophy
    molona's Avatar
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    Well, it depends on how the destination mail server is configured... but nowadays that's really rare so I will agree with SpikeZ... No

  4. #4
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    I guess it's not. I've tried it and I can still access my email.

  5. #5
    SitePoint Member Cusion1991's Avatar
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    I don't think it would really matter if you typed your email addy using upper or lower case. Passwords are the ones that are case sensitive.

  6. #6
    SitePoint Wizard Stomme poes's Avatar
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    The mail servers determine this.

    According to the RFC, this should be a valid email address
    =^.^=@kitteh.cat

    But no server I know of will accept this.

  7. #7
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    No, it's not case sensitive, but I think it should be because it will almost close bulk email services problems

  8. #8
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    It's better if is not case sensitive. Imagine all the problems it would cause.
    For starters, you would have thousands of variations given a name: name@hotmail.com, Name@, nAme, nAmE etc. etc.

  9. #9
    SitePoint Wizard Stomme poes's Avatar
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    Quote Originally Posted by winagain
    Imagine all the problems it would cause.
    Like all the problems you get on any Unix filesystem?

    I like case sensitivity, but Windows has trained most users to ignore it.

  10. #10
    Programming Since 1978 silver trophybronze trophy felgall's Avatar
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    Quote Originally Posted by Stomme poes View Post
    The mail servers determine this.

    According to the RFC, this should be a valid email address
    =^.^=@kitteh.cat

    But no server I know of will accept this.
    Have you tried specifying it as:

    "=^.^="@kitteh.cat

    any string of up to 255 characters is meant to be acceptable before the @ provided it is enclosed in "". Of course the one you specified is valid even without the quotes.

    Perhaps more people need to look at using a proper email address parser such as http://code.iamcal.com/php/rfc822/ for PHP, ruby and python so that they can properly recognise what is and isn't a valid email address.
    Stephen J Chapman

    javascriptexample.net, Book Reviews, follow me on Twitter
    HTML Help, CSS Help, JavaScript Help, PHP/mySQL Help, blog
    <input name="html5" type="text" required pattern="^$">

  11. #11
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    Quote Originally Posted by Stomme poes View Post
    ... =^.^=@kitteh.cat ...
    Best imaginary address ever!
    Off Topic:

    you should watch this if you hain't yet crazy poes lady http://www.youtube.com/watch?v=AAfpq6EPKck
    Patriotism is the virtue of the vicious.


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