Step 1 - Open the Gmail app
Step 2 - Go to Settings
Step 3 - Click the arrow right of the email
Step 4 - Click Add account
Step 5 - Click Other
Step 6 - Enter your email address
Step 7 - Select IMAP
Step 8 - Enter your password
Step 9 - Enter imap.one.com for incoming server
Step 10 - Enter send.one.com for outgoing server
Step 11 - Select account options
Step 12 - Done!
Note: This guide shows you how to set up your email account in the Gmail app. If you want to set up your email in the Samsung app, please check the guide below.
Setting up email in the Redmi y2 app on Android

Step 1 - Open the Gmail app

Open the Gmail app on your Android device.
android-gmail-open-app.png

Step 2 - Go to Settings

Click the menu in the top left corner to open Settings.
android-gmail-menu.png

Step 3 - Click the arrow right of your email

At the top of your screen, click the small arrow next to your name and email address to open Accounts. It looks like a triangle.
android-gmail-settings-arrow.png

Step 4 - Click Add account

Click Add account to start setup.
android-gmail-add-account.png

Step 5 - Click Other

Select Other as the account you want to set up.
Tip: If you want to set up your email with Mobile Sync, choose Exchange instead.
android-gmail-other.png

Step 6 - Enter your email address

  1. Type in the email address you want to set up.
  2. Click Next.
android-gmail-type-address.png

Step 7 - Select IMAP

Select IMAP as the account type.
android-gmail-type-account-imap.png

Step 8 - Enter your password

  1. Type in your email password, the one you use to log in to Webmail.
  2. Click Next.
android-gmail-password.png

Step 9 - Enter imap.one.com for incoming server

  1. Type in imap.one.com as the incoming server.
  2. Click Next.
android-gmail-incoming.png

Step 10 - Enter send.one.com for outgoing server

  1. Type in send.one.com as the outgoing server.
  2. Click Next.
android-gmail-outgoing.png

Step 11 - Select account options

Here you set how often Gmail should look for new emails, when you get notifications and more. Uncheck any options you don't want and click Next to continue.
android-gmail-options.png

Step 12 - Done!

Your account is now set up and ready to go!
android-gmail-done.png

Related articles:
Setting up Android Email
Setting up Mobile Sync (Exchange Active-sync) on Android