With push email, the server automatically sends new messages to the mail client, giving you the latest messages automatically.
POP/IMAP mailboxes, which we use for our Standard and Premium mailboxes work based on a polling protocol, where the mail client has to request the new emails from the server. Because of this protocol, you cannot set up push email on our Standard or Premium mailboxes.
You can set up push emails on our Business Exchange Email Hosting platform: https://www.heartinternet.uk/email-hosting/hosted-exchange