Why won't attachments show in my email?

My professor grades our class's papers via iAnnotate. She sends us the graded copies with feedback comments as an attachment to an email. The attachment is an iAnnotate PDF. Recently my Yahoo mail account won't show these attachments on the computer. I can see and open the attachments on my iPhone. Is there any way I can fix this so that I can view these attachments on my computer?

  • Will it cost to send photos ad email attachments on an iPhone 3G? I know I asked this yesterday, but I want to add more detail to my question.So, because I have an old iPhone 3G, I basically can't get any apps on my phone because it only supports iOS 4.2.1. Because of this, I was hoping I could email photos from my phone to my kindle to upload them to twitter. Will this cost? I'm on contract, t mobile and use Wi-Fi.
  • Why won't attachments download? For 2 days I've been unable to download any attachments. I've changed browser, so it is not a browser issue. My husband's yahoo e-mail on a different computer has the same problem. BUT he can open on his some on Iphone.
  • Why don't email alerts show on my iPhone? I just set up my phone yesterday do I'm new to it. Basically I logged into my Gmail account on the Mail app but for some reason new emails only appear when I go into the app and refresh the page manually. My mum has an iPod touch so I know that you can get them. I went into settings > notifications > mail and changed it so that the alerts should appear but they don't… It's an iPhone 4S if that helps.
  • Why are my emails from my iphone being sent as attachments? I call up a contact and select the email address. I type the email and send it. But when it arrives to the person I'm sending it to it is an attachment. When it arrives to the recipient it says my telephone number and YOU HAVE BEEN SENT A PICTURE MESSAGE. How can I make my emails be just that an email and not an attachment.