To configure a webmail on your android phone first...
- Open your Email
- Click settings on your menu list
- Click Add Account
- Select Others
- Add your webmail Address
- Choose type of account (Select Personal IMAP)
- Add Password
- Change incoming server setting to "imap.hostinger.com"
- Change smtp server to "smtp.hostinger.com"
- Click next
- Select name and click next
To further understand this, you can check out attached video