If Then Else formula with a multi select field.

Help Please.   I have a multi-select field that has the options of Mail, Email and Dept to Initiate.  Mail and Email can both be options.  In that case, I want it to display "Mail and Email".  But if just mail, "Mail, if just email, "email", etc.  However I can't seem to get it work correctly.  it does show both.  Then will show just Mail, but when Email is selected it still shows Mail.  I've looked at this so long and tried to refigure it that at this point is probably glaringly obvious, but I just can't see it.   

This is the current formula I have:

var text Receipt=If(Contains(ToText([License Master - Renewals Received via:]),"Mail, Email")=true, "Mail and Email", Contains(ToText([Renewals Received via:]),"Mail, Email")=true,"Mail and Email", Contains(ToText([License Master - Renewals Received via:]),"Mail"), "Mail", Contains(ToText([Renewals Received via:]),"Mail"), "Mail", Contains(ToText([License Master - Renewals Received via:]),"Email"), "Email", Contains(ToText([Renewals Received via:]),"Email"), "Email", Contains(ToText([License Master - Renewals Received via:]),"Dept to initiate"), "Dept. to Initiate", Contains(ToText([Renewals Received via:]),"Dept to initiate"), "Dept. to Initiate");

"<span style='font-size:18px;color:#1E90FF;white-space:nowrap'><b>"&$Receipt&"</b></span><br>";