We have recently migrated to Zimbra for our e-mail. One of our users is responsible for sending out an alumnae e-mail newsletter, and has an addressbook of a little over 500 addresses. I have been able to import all those addresses into Zimbra, but I can't see a way to put them all into one contact list. Is there a limit on the number of addresses you can have in one list, or any other way to create such a list? I also thought of breaking the list down, and created several smaller addressbooks, but the web client doesn't seem to want to recognize user-created addressbooks when creating a contact list. We are using version 4.5. Does anyone have any ideas, or should I just give up and use something like Thunderbird to manage this e-mail list? I figure it wouldn't hurt to ask, and I appreciate any help .