Any suggestions of which is better? My only concern with Imap is that if the server goes down, I will not be able to get my previous mail...is that correct?
really it depends on where you want to access it from (my criteria for choosing anyway)
I have a setup like so at home:home account : POP3 set to leave a copy of messages on the server for 14 dayswork account : IMAP
at work it would be the same but opposite, works quite well, for me
Actually, most IMAP email clients allow you to 'cache' copies of the messages locally, so you would have access to them if the server went down.
We highly recommend IMAP over POP3, if you have a choice.