So I had this issue going on for a couple days. My gmail would show that I have inbox(1) even though I didn't, and now today it would not send any of my emails. Big problem!
So I looked around online and found this fix, that is working so far.
Go to settings
Go to applications
Go to Manage Applications
Hit menu then filter and select all
Go to gmail and gmail storage
Clear both the data and cache from both
It will give you a warning about clearing the Data, saying that it will delete the account, blah blah blah. If this is your main account no worries. I did that and then went back into Gmail. It said wait your email will show shortly. It re-synced and is working great now! Thought I would share!
So I looked around online and found this fix, that is working so far.
Go to settings
Go to applications
Go to Manage Applications
Hit menu then filter and select all
Go to gmail and gmail storage
Clear both the data and cache from both
It will give you a warning about clearing the Data, saying that it will delete the account, blah blah blah. If this is your main account no worries. I did that and then went back into Gmail. It said wait your email will show shortly. It re-synced and is working great now! Thought I would share!