Why aren't my encrypted files received correctly when I send them?
It is likely that the receiver is using some sort of e-mail filtering software which removes the encrypted files attached in the e-mail. This software can be either installed locally or on the e-mail server. One reason can be that the filtering software does not recognize the file format since it is encrypted and therefore removes the file. Try to use different encryption formats the circumvent this problem. You can also try to send the encrypted file inside a compressed folder (.zip).