Comment 3 for bug 1495904

I have been noticing the same issue on Meizu MX4. I would say that most of the emails will go without notification so I decided to test if I can reproduce the issue or find some common nominator in the cases where the notification is not shown. To my surprise it worked quite well and the only way to reproduce it was to leave the gmail web app open and then lock the phone.

I don't know if this is useful or not, but here's what I tested:

-All emails sent from zoho
-I have @iki.fi address which is directed to my @gmail.com address. Most of the test emails we're sent directly to the @gmail.com.
-Only one google account configured, no other email accounts in use
-logs from account-polld: http://paste.ubuntu.com/12940752/
-OTA-7 installed

The test results:

Starting with phone locked, gmail web app closed
07:50 email sent, 07:51 notification received: phone kept locked
07:52 email sent, 07:56 notification received: notifications cleared, phone kept locked
07:57 email sent, 08:01 notification received: unlock phone, open notification in gmail web app, read email, go to inbox in gmail web app, leave it open and lock phone
08:03 email sent, 08:10 no notification: unlock phone, gmail web mail shows email in inbox. Close gmail web app, open dekko, lock phone
08:12 email sent, 08:16 notification received: turn off wifi and use 3G
08:20 email sent to gmail, 08:22 notification received
08:20 email sent to iki, 08:22 notification received: clear notifications, open gmail web app, go to home screen / scope, lock phone
08:28 email sent to iki, 08:32 notification received: unlock phone, open gmail web app and leave it in foreground, lock phone
08:32 email sent to iki, 08:40 no notification

As a bonus:
09:04 received unrelated email (heard notification sound from my work phone which syncs also my personal email). After waiting about 5 minutes, I unlocked the Meizu and there still was no notification. There was no gmail web app running.

Leaving gmail web app open and locking the phone seemed to cause the issue, but I believe that most of the time I don't have it open, not even in the background. The account-polld log shows 09:11 token expired, but otherwise I don't see anything special in it. The gmail account is #2 and disabled Facebook is #3.

I'm happy to provide more logs and test further if needed.