If I send mail to 50 people, does everyone need to have the program installed to open the file? –Yes, Everyone needs to have an AxCrypt app.
Please note: AxCrypt encrypted file(s) encrypted with .axx extension as per our design. AxCrypt app are required to open/decrypt the AxCrypt encrypted files. without AxCrypt app we cannot decrypt the encrypted files.
Still, you are facing any issue, please write a mail to firstname.lastname@example.org. We are happy to help you.