Rackspace Mail if you can do $10/month. It's $2 per mailbox, but there's a $10 monthly minimum per billing account. They're the pros for hosted business e-mail

Rackspace Mail if you can do $10/month. It's $2 per mailbox, but there's a $10 monthly minimum per billing account. They're the pros for hosted business e-mail. 3 million paid mailboxes. 100% uptime guarantee with an SLA behind it. 24x7x365 live support. If you want to talk to someone at 3AM on Christmas Eve, someone will pick up the phone. And you get all the stuff you expect: IMAP/POP/webmail, 25GB mailboxes, automatic backups, good spam filters, forwarding/aliasing/routing, SSL endpoints. I've never had deliverability problems, and in 7+ years can't ever remember there being downtime. http://www.rackspace.com/email-hosting/webmail/ http://www.rackspace.com/email-hosting/webmail/