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Installed under Firefox 2.0.0.3. (1) Notification worked but app failed to recognize that mail had been open and read: continued to announce mail already read. (2) Appears to reset gmail status flags for announced messages from already-opened to not-opened-yet after gmail tab loses focus. (2) Appears linked to appearance of spurious empty messages from email address of sender of most recently opened message. Resolution: uninstalled this extension!

Это отзыв для предыдущей версии этого дополнения (0.5.3).