No. The settings are the same as they were when you were with BT Broadband.
You are not on EE Mail, EE do not have an email service. You are still on BTMail provided that you migrated to EE from BT and not left BT for another provider then moved from that provider to EE.
Your BTMail should still show in your MyBT. It will not show in your MyEE.
If you check in your MyBT the email should be in "Your Products". If it does not show there you have to contact BT Email Team 0330.1234.150
If you have changed your password or any settings
The first thing to do when it happens is check to see if you can log on to your email account via a web browser. If you can there is obviously nothing wrong with your password or account hence my previous advice to do nothing.
If the problem did not resolve its self after a day or two or in your instance where you have changed your password you should stop your Apple device and any other devices from checking for email. The easiest way of doing that is to turn them off if you still have the account on your device. If you have deleted the account and it is no longer on your device do not try and add it at this time.
Once you have done that, change your email password again and check that you can access your email via webmail (on a browser).
If that works you should wait at least an hour to allow the servers to sync and then add the new password to your device and check it works. If it does then move onto the next device if you have one.
When entering the settings, make sure that in the Outgoing server you do not use the "use same as incoming" for the email address and password. Enter them manually. If the above does not resolve the problem, when you change your BT password on an iPhone/iPad/Apple device it may only change for INCOMING mail.
To change the outgoing mail password you have to go into Settings; then scroll down to Passwords & Accounts or on older devices Mail, Contacts, Calendars. From there select the BT email account and select the account where it is listed under IMAP.
You will find the details for the account and can change the password for the Incoming server there, the outgoing mail server only shows SMTP and mail.btinternet.com You have to tap on that Primary Server in order to find where the Outgoing password is hidden so you can update it.
When setting up the email account on your device you are best to set it up manually, using "other" and ensure that you are using the correct settings as per this link.
https://www.bt.com/help/email/manage-email-account/manual-settings/what-are-the-settings-for-outgoin...
