Gmail Doesn't show email from me

view full story

http://androidforums.com – I belong to some email groups on groups.yahoo.com. Every time you send a message to the group, everyone on the group list receives it. Therefore, when I send a message to group, everyone, including me, should get it. However, my Gmail is displaying everyone's messages except mine. I see all of their messages in my inbox, but my messages to the group never arrive. I worry that my messages weren't sent. However, when I go online to look at the yahoo group account, my message is there. It just never appears in my email app on my phone, or if I go to the Gmail Web interface on my computer. D (General)