AirSend lets you send a direct message (have a one-on-one conversation) with another user in a channel. When you initiate a direct message, a channel is automatically created that includes you and the other member, and the channel remains active unless you close or delete it later.
To create a direct message:
Use the channel as you use any other channel.
The channel remains active unless you close or delete it.
Currently, you cannot leave a direct messaging channel.