My company is looking into ZCS for our clients and we're running it in a test environment right now. Some of our small clients are using Google Apps and other webmail solutions and I was wondering if it was possible for them to keep their existing solutions and have Zimbra pull in emails via POP/IMAP into each user's mailbox? This may only be a transitory phase for some clients and others may not want to run an email server on-site but would like to take advantage of Zimbra's collaboration features (I know there are hosted service providers but I'm thinking of an on-site setup). I was also thinking that leaving the emails on the webhost provides an additional backup and archival -- Google Apps accounts are >7GB. Is this possible or is Zimbra only capable of receiving mail via SMTP?
Thanks for any help.