Email

You can have as many email accounts as you like on a tablet.

There are 2 “built in” email apps:

email 

How to add an email account

gmail

How to add a Google email account

Attachments

The most common e-mail attachment to send from an Android tablet is a picture or video. Some tablets may limit you to that choice, but other tablets may allow you to attach documents, music, and even random files if you’re so bold.

The key to adding an attachment to an outgoing message is to touch the paper clip (Add Attachment) icon in the Compose window. This technique works in both the Gmail and Email apps. After touching the Add Attachment icon, you see the Choose Attachment menu. The number of items on that menu depends on what’s installed on your Android tablet.

You can send the attachment directly from the email app or more commonly from the app which ‘manages’ the item that you want to send, such as a photo browser or camera app, a word processor app, or a music (library) app.  Often the instruction is called share.