In both configurations, channel and should-delete-messages are required attributes. With JavaMail 1.4.3 introduced significant improvements to the API, ensuring that there is always a condition that forces the IMAPFolder.idle() method to return StoreClosedException or FolderClosedException or to simply return, thus letting you proceed with auto-reconnecting.Ĭurrently auto-reconnecting runs infinitely making attempts to reconnect every ten seconds. However, if the connection was lost for a long period of time (over 10 min), IMAPFolder.idle(), does not throw FolderClosedException and does not re-establish the connection, and remains in the blocked state indefinitely, thus leaving you no possibility to reconnect without restarting the adapter.Ĭonsequently, the only way to make re-connecting work with JavaMail 1.4.1 is to set the property explicitly to some value, but it also means that such value should be relatively short (under 10 min) and the connection should be re-established relatively quickly.Īgain, it may be different with providers other than Gmail. It does, however, reconnect automatically if the connection was lost for a short period of time (under 10 min in our testing). However, if this property is not set (it should be indefinite) the IMAPFolder.idle() method never returns and never throws an exception.

With JavaMail 1.4.1, if you set the property to a relatively short period of time (approximately 5 min in our testing), IMAPFolder.idle() throws FolderClosedException after this timeout.

Mailspring release schedule