I tried another site to send a one time…
I tried another site to send a one time invite and most of them went to people's SPAM accounts. I paid the same amount for a one year membership on that site with Ads on my invitations as I did for a one time invitation on Green Envelope, however, Green Envelope had great delivery, visually pleasing invites and great breakdowns of who has opened, RSVP'd, etc. Love the experience so far!