Reasons why I prefer to use Yahoo! mail instead of Bearmail when I can't use Outlook:

-There's a 15 minute limit for idle time with Bearmail.
-Bearmail doesn't have rich text formatting.
-Bearmail uses your user name (such as thomasle) instead of your full name when other people receive your messages.
-Deleting messages from Bearmail removes them from the server.
-Sent messages aren't saved in your outbox.
-All messages are marked as new every time you log in, even if you've already read them.
-I'm not going to be able to use Bearmail once my uclink account expires.