To setup your Email client such as Outlook, Thunderbird and so on you will need the mail settings as below:

For IMAP

Account type: IMAP
Incoming mail server: mail.domain.co.uk (using your actual domain name)
Port 143

Username:  (your full email address)
Password:  (your email account password)

For SSL use –
Incoming mail server: cloud304.thundercloud.uk
Port :993

For POP3

Account type: POP3
Incoming mail server: mail.domain.co.uk (using your actual domain name)
Port 110

For SSL use –
Incoming mail server: cloud304.thundercloud.uk
Port :995

Outgoing mail server: cloud304.thundercloud.uk
Port 25025

User/pass: as above

For SSL use –
Outgoing mail server: cloud304.thundercloud.uk
Port 465

Please make sure you enable outbound authentication if using Outlook. This will use the same credentials as your incoming server.