Prevent replying to self

FAQ.md

@@ -678,12 +678,11 @@ Note that this is independent of receiving messages.
 <a name="faq34"></a>
 **(34) How are identities matched?**
 
-Identities are matched on e-mail address in this order:
+Identities are as expected matched by account.
+For incoming messages the *to* and *cc* address will be checked and for outgoing messages the *from* addresses will be checked.
+Archived messages will be considered as incoming messages, but additionally the *from* address will be checked.
 
-1. *Delivered-To* header address
-1. *To* header address
-1. *Cc* header address
-1. *From* header address
+The matched address will be shown as *via* in the addresses section.
 
 Matched identities can be used to color code messages.
 The identity color takes precedence over the account color.

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

@@ -851,8 +851,8 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvBcc.setVisibility(show_addresses && !TextUtils.isEmpty(bcc) ? View.VISIBLE : View.GONE);
             tvBcc.setText(bcc);
 
-            tvIdentityTitle.setVisibility(show_addresses && debug && via != null ? View.VISIBLE : View.GONE);
-            tvIdentity.setVisibility(show_addresses && debug && via != null ? View.VISIBLE : View.GONE);
+            tvIdentityTitle.setVisibility(show_addresses && via != null ? View.VISIBLE : View.GONE);
+            tvIdentity.setVisibility(show_addresses && via != null ? View.VISIBLE : View.GONE);
             tvIdentity.setText(via == null ? null : MessageHelper.formatAddresses(new Address[]{via}));
 
             tvTimeExTitle.setVisibility(show_addresses ? View.VISIBLE : View.GONE);

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

@@ -72,7 +72,6 @@ import javax.mail.Session;
 import javax.mail.Store;
 import javax.mail.StoreClosedException;
 import javax.mail.UIDFolder;
-import javax.mail.internet.AddressException;
 import javax.mail.internet.InternetAddress;
 import javax.mail.internet.MimeMessage;
 import javax.mail.search.ComparisonTerm;
@@ -1096,23 +1095,22 @@ class Core {
             Address[] froms = helper.getFrom();
             Address[] tos = helper.getTo();
             Address[] ccs = helper.getCc();
-            String delivered = helper.getDeliveredTo();
 
             // Build ordered list of addresses
             List<Address> addresses = new ArrayList<>();
-            if (delivered != null)
-                try {
-                    addresses.add(new InternetAddress(delivered));
-                } catch (AddressException ex) {
-                    // Local address contains control or whitespace in string ``mailing list someone@example.org''
-                    Log.w(ex);
-                }
+            if (folder.isOutgoing()) {
+                if (froms != null)
+                    addresses.addAll(Arrays.asList(froms));
+            } else {
                 if (tos != null)
                     addresses.addAll(Arrays.asList(tos));
                 if (ccs != null)
                     addresses.addAll(Arrays.asList(ccs));
+                if (EntityFolder.ARCHIVE.equals(folder.type)) {
                     if (froms != null)
                         addresses.addAll(Arrays.asList(froms));
+                }
+            }
 
             // Search for matching identity
             EntityIdentity identity = null;
@@ -1144,7 +1142,8 @@ class Core {
 
             message.references = TextUtils.join(" ", helper.getReferences());
             message.inreplyto = helper.getInReplyTo();
-            message.deliveredto = delivered;
+            // Local address contains control or whitespace in string ``mailing list someone@example.org''
+            message.deliveredto = helper.getDeliveredTo();
             message.thread = helper.getThreadId(context, account.id, uid);
             message.from = froms;
             message.to = tos;

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

@@ -1717,32 +1717,23 @@ public class FragmentCompose extends FragmentBase {
                             draft.inreplyto = ref.msgid;
                             draft.thread = ref.thread;
 
-                            // Special case
-                            if (BuildConfig.DEBUG) {
+                            // Prevent replying to self
                             String from = null;
-                                String to = null;
-                                String delivered = Helper.canonicalAddress(ref.deliveredto);
-                                String me = Helper.canonicalAddress(Helper.myAddress().getAddress());
-
+                            String via = null;
                             if (ref.from != null && ref.from.length > 0)
                                 from = Helper.canonicalAddress(((InternetAddress) ref.from[0]).getAddress());
-                                if (ref.to != null && ref.to.length > 0)
-                                    to = Helper.canonicalAddress(((InternetAddress) ref.to[0]).getAddress());
+                            if (ref.identity != null) {
+                                EntityIdentity v = db.identity().getIdentity(ref.identity);
+                                via = Helper.canonicalAddress(v.email);
+                            }
 
-                                if (delivered.equals(me) && from != null && from.equals(me)) {
-                                    if (to != null && to.equals(me))
-                                        draft.to = ref.reply;
-                                    else
+                            if (from != null && from.equals(via)) {
                                 draft.to = ref.to;
                                 draft.from = ref.from;
                             } else {
                                 draft.to = (ref.reply == null || ref.reply.length == 0 ? ref.from : ref.reply);
                                 draft.from = ref.to;
                             }
-                            } else {
-                                draft.to = (ref.reply == null || ref.reply.length == 0 ? ref.from : ref.reply);
-                                draft.from = ref.to;
-                            }
 
                             if ("reply_all".equals(action)) {
                                 // Remove self from cc