i'm still have problems with synchronization since update to marshmallow.
i delete all my accounts, installed google calendar and nothing works, not a problem with network so in wifi is also not working .
Gmail don't show new mail if i don't check manually. mail ru and yandex same thing... any clue?
thnks
Same here. I'm not completely sure but it doesn't work since 6.3.10... Any ideas? Thanks in advance.