Mac mail not uploading messages to gmail
I have been trying to figure out the best way to move a bunch of old PST files into gmail. I turned on IMAP on gmail and connected my Mac Mail account to it successfully (all of my gmail messages downloaded to Mac Mail).
I've converted the PSTs and loaded them into Mac Mail. I'm able to see all of the messages in their different folders. I have been dragging messages from the local folders to various gmail folders. Sometimes, the messages are uploaded and I am able to find them in gmail afterwards. Generally, I've noticed that when the messages take a long time to process, they are being uploaded.
Sometimes, however (especially when I select and try to move a lot of messages), the messages appear to process very quickly (about 10 per second) - and I see the Google "All Mail" unread counter increment quickly. Then, I am unable to find those messages in gmail - they are not being copied up to gmail. I've tried clicking "Sync Gmail" and taking all accounts offline and then online, and nothing seems to force the messages to upload.
Anyone have any help they can offer?
-John
MacBook Air (11-inch Mid 2011), iOS 7.1