Hi David,
Please type the password of your account username@pm*.onmicrosoft.com to see if you can send emails. If you don’t have the password, please contact the consultant.
Additionally, you can sign in Office 365 trial version to do this test. This is free in 30 days. Please refer to the links below to sign in an Office 365 plan.
Office 365 Plans:
www.microsoft.com/.../free-office365-trial.aspx
Office 365 Preview Plans:
www.microsoft.com/.../try-office-preview
Thanks,
Linda Wang