Gmail Growl

Gmail Growl monitors a Gmail account for new mails and displays fancy desktop alerts. With Prowl support, Gmail Growl forwards alerts as push notifications to your iPhone. Gmail Growl uses IMAP IDLE for Gmail, which provides near-instantaneous alerts of new messages. It features open Gmail Inbox from system tray, compose new Gmail from system tray, hotkey for compose from clipboard, unread mail count in tray symbol, can register as mailto handler for web pages, and can be used as standard email program.