Paperless Post. The site allows users to send online invitations complete with personalized virtual envelopes, then monitor guest receipt and replies. Paperless Post provides a user experience similar to walking into a brick and mortar card shop then dropping invites in a mail box; after the first 25 free "stamps," users may purchase more. A single stamp sends a card to one recipient, and pricing is volume based, from 30 stamps for $5 to 1000 stamps for $50. Users can also purchase "coins" to customize invitations with envelope liners, photos, nameplates and logos. Paperless Post is a great option for party invitations, greeting cards, thank you notes, change of address and birth announcements.