Adding an RSVP to email invites

[velohangar]

Howdy 

I'm looking to add a function button to my marketing emails for event attendance. I'd like to gauge attendance and see growth. Functionality would be similar to evite, etc. Are there any apps that would add that function?

Thanks!

[spnick]

the square email marketing and reporting is light years behind somehti9ng like mail chimp