To set up mail manually, you will need the settings used for your account.
How to find the settings you can find here
1.Now we can add a new account to your iPhone:
Go to Settings -> Passwords & Accounts.
Select New account.
You will be offered several mail services to choose from. Click on Other to add your own email address.
Then, in this window, click New account.
2. Set up Mail on iPhone
To add a new account to your Mail app, you'll need the information you copied earlier to hPanel.
In the new account window, make sure that all fields are filled in correctly.
Name - Your full name, which will be displayed as the sender's name.
Email - Your full email address.
Password - Enter the password you use to log in to your email account.
Description - only you can see it, enter any description to identify the new mailbox.
After filling in the fields, click Next.
You will see two options - IMAP and POP. In this example, we will choose the IMAP protocol. Now enter the mail server settings we copied earlier for incoming and outgoing mail. Here's what it should look like:
Hostname - your IMAP Host (incoming server) and SMTP Host (outgoing server)
User Name - your email address that you entered earlier
Password - repeat the password you entered earlier
When finished, select Next and then Save.
Go back to Settings -> Passwords & Accounts. You will see the name of the email account you just created. In our case, this is Justfortestingpurpose.
Your new account should now appear in the Mail app on your iPhone or other iOS device among other mailboxes.