GMail

The "out-of-office" reply is a commonly used automatic email reply that lets people know you will be away from your email for an amount of time, so they won't think you are ignoring them. Just about every email client has this tool, including one of the most popular - Gmail. Apple Mail and other email managers sometimes don't let you set up out-of-office responses. For Apple Mail you'd have to do it in a roundabout way, setting up rules on your desktop Mail app. It's a better idea to set it up at the source.

Swiping on a message in the Gmail app does not send that message to the Trash like one would assume, instead swiping on a message sends it to your "archives." It is a counterintuitive feature Google has built into the Gmail app. To delete a message you must individually open that, or you can perform a long press to open a toolbar with the trash can icon. Swiping left or right on an email to quickly send it to the trash seems like such a much more natural way to delete a message, and you can, but first you must reconfigure your Gmail to stop archiving your messages. Here's how:

Gmail offers a lot of interesting features such as Smart Replies, Undo Send and more, but it can be a bit confusing at times. Sometimes features work across different platforms and sometimes they don't. If you set up a personal signature on your laptop it will not appear in emails within the app and vice versa. You can also not see your signature while writing an email in the Gmail app, but you can on the desktop version. You will need to set up your signature separately within the app and at gmail.com if you want it to appear while switching platforms. Here's how:

There are many reasons to use the Gmail app instead of using the stock Mail app on your iOS device. One reason being, the ability to setup multiple email accounts without having to deal with POP3/IMAP or other nonsense like that. You can also switch easily between multiple Gmail accounts within the app after they have been setup. Here's how: