ReadWriteWeb

The iPhone's email client is pretty good and with the 3.0 update, it can also finally search through email on your server. To do that, though, you have to be online and you can only do basic keyword searches. ReMail 2.0 wants to change this. ReMail's iPhone app (iTunes link), which officially launched today, downloads all your email from any IMAP server and makes it searchable, no matter whether you are online or offline. The app, which costs $4.99, includes advanced search functions as well as a very smart auto-completion feature for speeding up your searches.