updated 04:27 pm EDT, Thu April 3, 2014
Messages can be sent to non-Vine users
Twitter-owned Vine has updated its iOS and Android apps with a new direct messaging feature. The option lets people send videos privately, regardless of whether the recipient is a Vine user. People who don't have a Vine account will instead get the videos via SMS or email.
Messages can be sent to multiple people at once, but are treated as separate conversations. People can further choose to only receive messages from friends or followers. Both apps are free downloads; the iOS app requires iOS 6 or later.