Why Mail May Not Be Available to You

There are two separate gates on Mail, and each one shows different copy.

The Mail icon is missing from your top nav entirely

The Mail button only appears if both are true: your organization has email turned on, and you personally hold the Access Mail right. If either is missing, there's nothing to click — talk to your administrator.

The Mail icon is there, but the inbox shows a message instead of your mail

Opening Mail (or /messages) checks two more things and explains itself directly on screen:

• "Email isn't set up yet" — your organization hasn't connected an email provider at all. As a member, you're told an administrator needs to set one up; an administrator sees a button to configure it.
• "You don't have a mailbox yet" — email is ready for your organization, but no mailbox has been assigned to you specifically. You (or your administrator, depending on how your org is configured) can assign one from your Settings → My Account → Mailbox(s) tab.
• "Email isn't available" — a generic fallback for anything else; reach out to your administrator.