This tenant does not allow email verified users to be added due to an admin-defined policy.

This tenant "adomain.com" does not allow email verified users to be added due to an admin-defined policy. Contact tenant's admin to report the error.

Install Microsoft Azure Active Directory Module

Download the MSI at the following link: http://connect.microsoft.com/site1164/Downloads/DownloadDetails.aspx?DownloadID=59185

Connect to Azure

Run the following command, and enter your credentials for Azure AD:

Connect-MsolService

Change Company settings to allow Email Verification

Set-MsolCompanySettings -AllowEmailVerifiedUsers $true