When you execute a Twitter Direct offer, the message content configured in the Twitter offer is sent directly to those Twitter users with screen names matching the values for the attribute defined at Recipient screen name at the Twitter Direct channel. Note that recipients of Twitter Direct messages must be followers of the account with which the channel has been configured.
If the offer was configured with a Picture, the same is included in the message delivered to its recipient(s).
Note also that an additional parameter – rpcid (RPContactID) – is appended to any appropriate URL content if a Matomo adapter is attached to a Twitter Direct channel.