Simplification

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

@@ -2258,24 +2258,14 @@ class Core {
             throw new IllegalArgumentException("exists without msgid");
 
         // Search for message
-        Message[] imessages = (account.isOutlook())
-                ? ifolder.search(new HeaderTerm("X-Microsoft-Original-Message-ID", message.msgid))
-                : ifolder.search(new MessageIDTerm(message.msgid));
-
-        // Fallback
-        if (account.isOutlook())
-            if (imessages == null || imessages.length == 0)
-                try {
-                    // Needed for Outlook
-                    imessages = ifolder.search(
-                            new AndTerm(
-                                    new SentDateTerm(ComparisonTerm.GE, new Date()),
-                                    new HeaderTerm(MessageHelper.HEADER_CORRELATION_ID, message.msgid)));
-                } catch (Throwable ex) {
-                    Log.e(ex);
-                    // iCloud: NO [UNAVAILABLE] Unexpected exception
-                    // Seznam: Jakarta Mail Exception: java.io.IOException: Connection dropped by server?
-                }
+        // Alternative, inconsistent for Outlook: X-Microsoft-Original-Message-ID
+        Message[] imessages = ifolder.search(account.isOutlook()
+                ? new HeaderTerm(MessageHelper.HEADER_CORRELATION_ID, message.msgid)
+                : new MessageIDTerm(message.msgid));
+
+        // Searching for random header:
+        //   iCloud: NO [UNAVAILABLE] Unexpected exception
+        //   Seznam: Jakarta Mail Exception: java.io.IOException: Connection dropped by server?
 
         // Some email servers are slow with adding sent messages
         if (retry)