Whilst both IMAP and POP3 can be used, we strongly recommend using POP3 with your Platform email address.
The main difference between these two systems is that POP3 downloads all your emails into your email client (and then removes them from the storage space on the email server). IMAP, however, does not remove the emails from the storage space on the server, and so it is very easy for your email storage to fill up completely. See our guidance on the limit of the number of emails that can be held on the server for more information about this. If the storage space on the server does fill, then this can mean that you are not able to receive or send emails from this email address. This is why we highly recommend using POP3 instead of IMAP.