Why people cannot unzip MAC created files?

Discussion in 'Mac Basics and Help' started by peterpan123, Nov 3, 2015.

  1. peterpan123 macrumors 6502

    Joined:
    Sep 24, 2014
    #1
    Hello, sometimes I put several files in a folder. Then, right click and compressed the folder. Next, sent the compressed file via email attachment. It has happened several times that the other parties replied to me saying that they cannot unzip the file and requested me to send the unzipped format. How come?
     
  2. satcomer macrumors 603

    satcomer

    Joined:
    Feb 19, 2008
    Location:
    The Finger Lakes Region
    #2
    Did you checkmark 'Always send Windows Friendly Attachments"?
     
  3. Nermal Moderator

    Nermal

    Staff Member

    Joined:
    Dec 7, 2002
    Location:
    New Zealand
    #3
    How big is the file? It seems that OS X and Windows handle large files (more than 4 GB, if I recall correctly) differently.
     
  4. peterpan123 thread starter macrumors 6502

    Joined:
    Sep 24, 2014
    #4
    Where is the checkmark?

    The compressed file size is: 15.1MB
     
  5. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #5
    The option is in the Mail app. Click on the Edit menu, then Attachments.
     
  6. peterpan123 thread starter macrumors 6502

    Joined:
    Sep 24, 2014
    #6
    Thanks but I use yahoo mail on web browser.
     
  7. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #7
    Then, you may not want to compress those files using the built-in function on your Mac. Use software that will give you a more compatible zip file, such as Archiver, or Smart Zipper, etc.
    I think by using the builtin compression, you end up with a file that is compressed, but not quite as compatible as you would expect when a Windows pc tries to open it.

    Or, don't compress the files at all, just attach them in a folder.
     
  8. peterpan123 thread starter macrumors 6502

    Joined:
    Sep 24, 2014
    #8
    Thanks. Just checked the App Store. They seem to cost money. Do you know of any free app that is guaranteed to be able to generate zip file that could be unzipped by Windows user? If not, which of the two above is better?

    I have over 10 files. It may be annoying to the receiving party to click and save each file.
     
  9. 3568358 macrumors 6502

    Joined:
    Jun 11, 2015
    Location:
    United States
    #9
    You shouldn't be having this issue at all. Could you pm me for my email and send me one of the compressed folder so i can see how this is happening.
     
  10. peterpan123 thread starter macrumors 6502

    Joined:
    Sep 24, 2014
    #10
    Thanks. It is just a bunch of pdf files. Sometimes including jpeg files.
     

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