Email Never Sent Only Shows Mail Queued

This is my syntax which looks valid to me, but the message will never send, need to get the message to send? (@recipients & @from_address are junk here, but valid email addresses in my procedure)

Code:
exec msdb.dbo.sp_send_dbmail
@profile_name = 'DatabaseMail',
@recipients = 'loggedinuser@domain.com',
@body_format = 'HTML',
@from_address = 'SQLEmailAccount@domain.com',
@body = 'Test 12345',
@subject = 'Test Email From SQL Server';