More than one Gmail account? Leave the extra iPhone (or iPhones) at home: the Gmail app for iPhone (and iPad) now lets you switch between multiple (Gmail and Google Apps) accounts easily.
Searching mail is often easier and faster, too, on the iOS app with search suggestions.
Writing of search, if you wonder where all the gigabytes have gone, you can now — not sort All Mail by size but — search all mail by size. This works on the web as well as in the apps. Results from Gmail can also appear in overall Goole search, if you like.
To let you send smaller emails yourself and still share files easily, Gmail offers to "attach" documents up to 10 GB in size using Google Drive. To let you send international emails easily, Gmail offers a further host of tools to type in various languages using English transliterations or virtual keyboards.
In email and address book applications that support CardDAV (such as iOS and OS X Contacts), you can now access your Gmail address book seamlessly and with easy synchronization.
The Gmail app for Android has learned a new trick as well and can now fit emails' initial display to the display size for less initial tapping, flicking and scrolling.
Gmail video chat, finally, has been adapted to using Google+ Hangouts.
›› Gmail is the Google approach to email and chat. Practically unlimited free online storage allows you to collect all your messages, and Gmail's simple but very smart interface lets you find mail precisely and see it in context without effort.