In Channels > Twitter > Logs you can see all @mentions and DMs sent to and from your helpdesk.

For example:

Date

The date and time messages were sent or received.

Message ID

A messages unique ID

User

The Deskpro ID of the user who sent the tweet or DM

Agents

The Deskpro ID of the agent who sent the tweet or DM

Status

The status of the tweet or DM, whether it is successfully sent

Direction

If the tweet or DM was inbound (sent by user) or outbound (sent by agent)

Type

If it was an @mention tweet or a DM

From Handle

The handle of the account used to send the tweet or DM

To Handle

The handle of the recipient of the tweet or DM

Ticket

The ID of ticket that the tweet or DM was routed to