Same problem as everyone else sending photos on windows 8.1 and trying to find an e-mail association. The standard answer seems to be to have a default mail client. I have windows mail and it is my default and it still does not work. I have aol mail and also Gmail. When I send a photo from share in the charms the email choices come up and I send the photo out. A few minutes later I get a message  that there is a problem sending messages from aol.com or Gmail.com right now-check with provider for info. I then go to windows mail and open the out box where the photo has gone to and have to delete it to get rid of the message. The same for Gmail. Tell me this-- is windows mail considered a client or not and also the default that should associate with photo gallery? These photos go to the outbox and not the in box. Also when on pictures it still states there is no mail association.

 Please for once show us all exactly how to do the association.

Thx