iOS: Airmail is an incredibly customisable little email app for iPhone, and now it's available for the iPad. Alongside the update that brings along iPad support, a handful of new features are here as well. The iPad version of Airmail works a lot like the iPhone version, so if you're familiar with that one, you'll be right at home. The update also brings along new features for both the iPad and iPhone, including Touch ID support, customisable keyboard shortcuts, saved searches, send later support and read receipts. The saved searches feature is probably the most interesting. It allows you to create smart folders for searches, much like you can do in Finder in OS X. All old and new messages are automatically filtered into that folder so you can find them quickly. There's also a new dedicated unsubscribe button that allows you to quickly unsubscribe from newsletters with a quick tap.
The app is also a lot more stable now. The animations are smoother, the HTML rendering engine is improved and a slew of bug fixes rough out some of the edges of the launch version. It's a solid update that's worth a look if you're hunting for an email app that works just like a desktop app, and the iPad version being included in one universal app makes it a nice little package for people with both devices.
Airmail ($7.99) [iTunes App Store]