I would like to suggest a better way of adding user alias than the current method.
With Mera Mail server you simply need to add the user alias seperated by a semicolon like this: support;noreply;no-reply;contact;customerservice. Simple, easy, fast.
With SmarterMail I had to manually enter each alias, type the full email address where to forward to and save. For 20+ user alias you can see that it takes some time and is prone to error.