I use GPG to encrypt data all the time. For example all backups I do are via http://duplicity.nongnu.org/ (its also super convenient)
Additionally all emails that are GPG encrypted are stored that way with all the mail clients I know of (that is, they just keep the mail the way it is,decryption is in volatile memory only). So yes storage is encrypted too!
Yes it also means search only works on sender/subject. Eventually you can have an index that is GPG encrypted and works once decrypted, no technical issue here.
I use GPG to encrypt data all the time. For example all backups I do are via http://duplicity.nongnu.org/ (its also super convenient)
Additionally all emails that are GPG encrypted are stored that way with all the mail clients I know of (that is, they just keep the mail the way it is,decryption is in volatile memory only). So yes storage is encrypted too!
Yes it also means search only works on sender/subject. Eventually you can have an index that is GPG encrypted and works once decrypted, no technical issue here.