Whenever you’re using anything involving computers, it is always a good idea to back up important files. Whether you use an external hard drive, Zip disks or any of the other radically changing and expanding backup media available today, it is absolutely vital to make backup copies of all important emails, attachments and even your mailbox. In some cases, you will not be able to transfer your mailbox over to the new server, so you will just need to keep that saved in a separate folder or file.
An accurate record of correspondence is vital to a successful business. It is especially important to have accurate dates on your saved emails. Once you save a backup of everything, do a quick comparison to make sure the dates are the same on both copies. This is very important, especially if important documents are sent via email to external locations. If your company should ever find itself facing litigation of some sort, it will be vital to have accurate timestamps on each and every email for documentation purposes.