I have incoming emails that I would like to flag using my Android (red flag icon) so when I get to my desktop I can easily find certain emails. When I flag them on my phone they don't get flagged on my desktop or vice versa. The desktop and web browser do sync a flag together but not to my phone. I tested my phone by marking a message read and unread and those do show up on the desktop/web browser but can't figure out why the flagging doesn't work.
Any help will be appreciated.