For people looking for an alternative to Facebook events that isn't spammy like evite and the like, I recommend checking out https://gath.io
It requires no login, basically you provide an email address, you get a unique editing URL, you make a nice looking event form, and people can RSVP there. Your event and all related info is deleted from their DB 2 weeks after the event is over.
@JacksonBates FYI the author just put it up on Github after seeing the responses here! https://github.com/lowercasename/gathio