Send/receive or refresh inbox on native email client Is there such an option for the native email client built into Froyo? 

For example, I might send myself a document to the phone via email, and it won't come through straight away. Sometimes I need that option to check for new emails. 

There's no obvious refresh option in the menu.
If you go into the Mail client, go into the mailbox you want to check the mail for, then press Menu while you're looking at the Inbox, there should be a Refresh option on the menu bar.

That definitely seemed to go back to the server and check for new mail when I tried it with the Hotmail account I've got set up in there just now, as it found the message I'd sent a minute before.