Step 1 - Go to Settings > Accounts & Passwords
Open Settings on your iPhone and tap Accounts & Passwords.
Step 2 - Tap Add account
Tap Add account.

Step 3 - Tap Other
Select Other as account type.

Step 4 - Tap Add Mail Account
Tap Add Mail Account.

Step 5 - Enter your account details
Enter the account details for the email you want to add:
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Name: this will be visible as the sender.
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Email: the address you want to add.
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Password: you use it to log in to Webmail.
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Description: a name for the account on your device.
Tap Next to continue.

Step 6 - Select IMAP or POP
Step 7 - Enter your server settings
Enter the following settings:
- Dedicated IP Address
Incoming / Outgoing mail server : mail.yourdomainname
POP port : 110
IMAP port : 143
SMTP port : 25 or 587
Secure Encrypt : SSL or TLS
- Shared IP Address
Incoming / Outgoing mail server : securemail3.nineweb.co.th
POP port : 110
IMAP port : 143
SMTP port : 25 or 587
Secure Encrypt : SSL or TLS
Incoming server:
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Host name: mail.yourdomainname
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User name: your email account
-
Password: the one you use for Webmail

Outgoing server:
Tap Next to continue.
Step 8 - Save the account
Disable syncing of Notes, if this is enabled. Tap Save.

Step 9 - Tap your account again
Tap your account again to open settings.

Step 10 – OUTGOING MAIL SERVER – Tap SMTP
PRIMARY SERVER – Tap mail.yourdomain
Use SSL

Step 11 - Tap Advanced – Use SSL
Tap Advanced, at the bottom of your screen.


POP port : 110
IMAP port : 143
Use SSL : None
Step 14 - Done!
Your account is now set up correctly.