I presume you have a password !!!
This might help
You might find a clue if you look at the beginning of the file in wordpad
But according to this
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
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According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…