If you use an email provider like iCloud, Google, or Yahoo, Mail can automatically set up your email account with just your email address and password. Here's how:

1. Go to Settings > Mail, then tap Accounts.
2. Tap Add Account, then select your email provider.
3. Enter your email address and password.
4. Tap Next and wait for Mail to verify your account. 
5. Choose information from your email account, like Contacts or Calendars.
6. Tap Save.

If you don't see your email provider, tap Other to add your account manually.

To add your email account manually, here are the few steps:

1. Go to Settings > Mail, then tap Accounts.
2. Tap Add Account, tap Other, then tap Add Mail Account.
3. Enter your name, email address, password, and a description for your account. 
4. Tap Next. Mail will try to find the email settings and finish your account setup. If Mail finds your email settings, tap Done to complete your account setup.

If Mail can't find your email settings, then you need to enter them manually. 

Tap Next, then follow these steps:

1. Choose IMAP or POP for your new account. If you aren’t sure which one to choose, contact your email provider.

NB: 

1. POP3 will download the emails from the server and store them on your phone.
2. IMAP will store the emails on the server and show a cached copy on your phone. IMAP is best for most cases.

2. Enter the information for Incoming Mail Server and Outgoing Mail Server. Then tap Next. 

If your email settings are correct, tap Save to finish. If the email settings are incorrect, you'll be asked to edit them.