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celder9

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How do I open emails that come to me with a .p7m extension

I have a friend who sends me emails to my gmail account that have attachments .p7m and when I click on the attachment it asks me what program I want to use to open the attachment.  If I forward these emails to my work email which is outlook I can click on the attachments and they open fine.  How do I open the .p7m files on gmail?
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war1
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celder9

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Thanks war1.  
I downloaded the p7mviewer from the link above and it does open the files.  I was just hoping there was a way to open them without purchasing additional software for $19.50.  Anyone know of a way or any freeware?
The level of security developed with the public/private key approach is too great for any freeware text editor to break.  It is not a simple bit-shifting approach.

Go with the advice by war1.
celder9,

We have not heard from you. Did any comment help you solve your problem? Do you have any more questions? If an Expert helped you, please accept his/her answer above with an excellent or good grade.

Thanks, war1
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ASKER

The p7mviewer suggested by war1 did make it so that I was able to open the files, I just wasn't too happy with having to pay the $19.50 to buy the application.   Such is life.  Thanks war1 for the explaination and leads.  
You are welcome, celder9.
http://www.abylonsoft.com/reader/
 this is freeware and may do what your looking for