Valid user

src/freedombone-utils-gpg

 function enable_email_encryption_at_rest {
     for d in /home/*/ ; do
         USERNAME=$(echo "$d" | awk -F '/' '{print $3}')
-        if [[ $(user_added_to_app "${USERNAME}" "${app_name}") == "0" ]]; then
+        if [[ $(is_valid_user "$USERNAME") == "1" ]]; then
             if grep '#/usr/bin/gpgit.pl' /home/$USERNAME/.procmailrc; then
                 sed -i 's|#/usr/bin/gpgit.pl|/usr/bin/gpgit.pl|g' /home/$USERNAME/.procmailrc
             fi
 function disable_email_encryption_at_rest {
     for d in /home/*/ ; do
         USERNAME=$(echo "$d" | awk -F '/' '{print $3}')
-        if [[ $(user_added_to_app "${USERNAME}" "${app_name}") == "0" ]]; then
+        if [[ $(is_valid_user "$USERNAME") == "1" ]]; then
             if ! grep '#/usr/bin/gpgit.pl' /home/$USERNAME/.procmailrc; then
                 sed -i 's|/usr/bin/gpgit.pl|#/usr/bin/gpgit.pl|g' /home/$USERNAME/.procmailrc
             fi