Invite up to 200 users from your contacts to join your channel Developing social channels based on exchanging a single message isn’t exactly new, of course. Back in 2014, the “Yo” app was launched with the sole purpose of enabling users to send each other the greeting “Yo.” best-secure-messaging-apps-shutterstock-1892950018.jpg The Channel name and bio must be no more than 255 characters long
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