Check store connection if needed only

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

@@ -127,6 +127,7 @@ public class EmailService implements AutoCloseable {
     static final int ENCRYPTION_NONE = 2;
 
     final static int DEFAULT_CONNECT_TIMEOUT = 15; // seconds
+    final static boolean SEPARATE_STORE_CONNECTION = false;
 
     private final static int SEARCH_TIMEOUT = 90 * 1000; // milliseconds
     private final static int FETCH_SIZE = 1024 * 1024; // bytes, default 16K
@@ -231,7 +232,7 @@ public class EmailService implements AutoCloseable {
             properties.put("mail.imap.starttls.enable", Boolean.toString(starttls));
             properties.put("mail.imap.starttls.required", Boolean.toString(starttls && !insecure));
 
-            properties.put("mail." + protocol + ".separatestoreconnection", "false");
+            properties.put("mail." + protocol + ".separatestoreconnection", Boolean.toString(SEPARATE_STORE_CONNECTION));
             properties.put("mail." + protocol + ".connectionpool.debug", "true");
             properties.put("mail." + protocol + ".connectionpoolsize", Integer.toString(POOL_SIZE));
             properties.put("mail." + protocol + ".connectionpooltimeout", Integer.toString(POOL_TIMEOUT));

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

@@ -1568,11 +1568,13 @@ public class ServiceSynchronize extends ServiceBase implements SharedPreferences
                                         new Exception(state.getUnrecoverable()));
 
                             // Sends store NOOP
-                            EntityLog.log(this, account.name + " checking store" +
-                                    " memory=" + Log.getFreeMemMb() +
-                                    " battery=" + Helper.getBatteryLevel(this));
-                            if (!iservice.getStore().isConnected())
-                                throw new StoreClosedException(iservice.getStore(), "NOOP");
+                            if (EmailService.SEPARATE_STORE_CONNECTION) {
+                                EntityLog.log(this, account.name + " checking store" +
+                                        " memory=" + Log.getFreeMemMb() +
+                                        " battery=" + Helper.getBatteryLevel(this));
+                                if (!iservice.getStore().isConnected())
+                                    throw new StoreClosedException(iservice.getStore(), "NOOP");
+                            }
 
                             if (!getMainLooper().getThread().isAlive()) {
                                 Log.e("App died");