EmailEncoder supports MVC solutions from version 2.0.82
It is compiled vs MVC3 so if you stumble upon errors stating that MVC 3 dll is missing, make sure that you have added the correct assembly redirects to the web.config file.
<configuration> <runtime> <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"> <dependentAssembly> <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0" newVersion="2.0.0.0"/> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="4.0.0.0"/> </dependentAssembly> <dependentAssembly> <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" /> <bindingRedirect oldVersion="1.0.0.0" newVersion="2.0.0.0"/> </dependentAssembly> </assemblyBinding> </runtime> </configuration>