Tap Settings > Passwords & Accounts > Add Account > Exchange.
Enter your address
Enter your email address, then tap Next. You can also enter an account description.
Connect to your Exchange Server
After you enter your email address, choose Sign In or Configure Manually.
Tap Sign In to automatically discover your Exchange account information. If your account uses modern authentication, you'll be guided through a custom authentication workflow.
Tap Configure Manually to set up your account with Basic authentication.
Enter your email password, then tap Next. You might also be prompted to enter additional server information, Which is below:
Email Address - your regular email address
SERVER - webmail.tlecorp.com
Domain - Please leave blank
Username - email address @TLECORP.com ( You MUST use @tlecorp.com for your username. For example, testcenter@tlechildcare.com would be testcenter@TLECORP.com)
Sync your content
You can sync Mail, Contacts, Calendars, Reminders, and Notes. When you're finished, tap Save.