Use original email address for PGP

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -2276,7 +2276,7 @@ public class FragmentCompose extends FragmentBase {
                     List<String> emails = new ArrayList<>();
                     for (int i = 0; i < recipients.size(); i++) {
                         InternetAddress recipient = (InternetAddress) recipients.get(i);
-                        String email = recipient.getAddress().toLowerCase(Locale.ROOT);
+                        String email = recipient.getAddress();
                         if (!emails.contains(email))
                             emails.add(email);
                     }
@@ -2902,7 +2902,7 @@ public class FragmentCompose extends FragmentBase {
                                     Intent intent = new Intent(OpenPgpApi.ACTION_GET_KEY);
                                     intent.putExtra(OpenPgpApi.EXTRA_KEY_ID, pgpSignKeyId);
                                     intent.putExtra(OpenPgpApi.EXTRA_MINIMIZE, true);
-                                    intent.putExtra(OpenPgpApi.EXTRA_MINIMIZE_USER_ID, identity.email.toLowerCase(Locale.ROOT));
+                                    intent.putExtra(OpenPgpApi.EXTRA_MINIMIZE_USER_ID, identity.email);
                                     intent.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
                                     intent.putExtra(BuildConfig.APPLICATION_ID, largs);
                                     return intent;
@@ -2922,7 +2922,7 @@ public class FragmentCompose extends FragmentBase {
                                 Intent intent = new Intent(OpenPgpApi.ACTION_GET_KEY);
                                 intent.putExtra(OpenPgpApi.EXTRA_KEY_ID, pgpSignKeyId);
                                 intent.putExtra(OpenPgpApi.EXTRA_MINIMIZE, true);
-                                intent.putExtra(OpenPgpApi.EXTRA_MINIMIZE_USER_ID, identity.email.toLowerCase(Locale.ROOT));
+                                intent.putExtra(OpenPgpApi.EXTRA_MINIMIZE_USER_ID, identity.email);
                                 intent.putExtra(OpenPgpApi.EXTRA_REQUEST_ASCII_ARMOR, true);
                                 intent.putExtra(BuildConfig.APPLICATION_ID, largs);
                                 return intent;
@@ -5299,7 +5299,7 @@ public class FragmentCompose extends FragmentBase {
                                         String[] userIds = new String[recipients.size()];
                                         for (int i = 0; i < recipients.size(); i++) {
                                             InternetAddress recipient = (InternetAddress) recipients.get(i);
-                                            userIds[i] = recipient.getAddress().toLowerCase(Locale.ROOT);
+                                            userIds[i] = recipient.getAddress();
                                         }
 
                                         Intent intent = new Intent(OpenPgpApi.ACTION_GET_KEY_IDS);

app/src/main/java/eu/faircode/email/FragmentMessages.java

@@ -6668,7 +6668,7 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
                                 continue;
                             switch (key) {
                                 case "addr":
-                                    addr = value.toLowerCase(Locale.ROOT);
+                                    addr = value;
                                     break;
                                 case "prefer-encrypt":
                                     mutual = value.trim().toLowerCase(Locale.ROOT).equals("mutual");