To find your sync settings, go to Settings Try deleting messages with large attachments that may be stuck in the outbox.
Android gmail not updating inbox
Probably the most important thing to understand is the way Gmail organizes email.
Gmail organizes email messages using labels and not folders.
Read this answer in context Gmail IMAP has had problems this past weekend.
What you are seeing is happening to many people, including my father.
What you are seeing is happening to many people, including my father.
