If you are serious businessman, you know company business email is a must for your business and emails' backup is very important. But...
Don't let your company business email hosting create problem for you. Receiving a lot of annoying junk emails/spams everyday? Only notice your email account has been hacked to send junk emails/spams after receivied a lot of returned emails? Don't know how to solve these? Do you know that all these should be taking care by your hosting service provider on behalf of you, not you to worry and fix it?
Emails can be used as proofs of agreement or disagreement (black & white) for business. Therefore, emails' backup is basic and essential. But your existing email hosting can truly help you to backup all company emails for you? Do you notice that your existing email hosting can't backup all outgoing emails that sent by you and/or your staffs especially when setup using POP3 method to check emails?
Yes, of course you and your staffs can use IMAP method to check emails and automatically synchronize all sent email to hosting server for backup purposes, but do you know that this IMAP method requires bigger mailbox and hosting space to keep all these emails and more data bandwidth to do the synchronizing which incur more cost and slow down your internet connection? Do you know that with IMAP method, if you accidentally delete one important email from your mailbox, it will delete the same email from your hosting server and other devices also?