I'm using Windows XP HE and have Outlook Express 6 on it and guess what? It's giving me problems!!! Just as it has been giving me problems right from version 4!

First problem: Sending emails.
I will compose an email, and click "Send" and that little information box pops up immediately to inform me that it was unable to send the email. I then have to go to "Outbox," open up the message, and click send again, then only does the email get sent. I have to do this everytime. It's annoying. What is the problem? Forget that... what is the solution?

Second problem: new accounts.
It only creates a new section for hotmail accounts. For POP3 accounts on domains and such, it goes into the local folder. And that too, all email received there is received OPEN. I just can't find an option to make it "download headers" only for the local folders, while I can for the hotmail and msn accounts. Any suggestions?

And just a question: Is there a better email client that doesn't give me problems? That sends emails in one go? That doesn't show new email twice? That isn't too heavy? That is more flexible? That allows separate sections for all email addresses?

Or is OE definitely the best? (Even opinions would do here)