I saw the particular user mail status in that all status was shows expired. So I submitted "Move Messages from Exception to Normal Queue of Workflow Agent" concurrent request. It will ask parameters then we need to give WF component name in my case I was given WF_NOTIFICATION_OUT.
I used below details for my reference:
How To Move Notifications From Exception Queue To Normal Queue? ID 472204.1
FNDWF_MOVE_MSGS_EXCEP2NORMAL "The agent is not found" [ID 760983.1]
Error APP-FND-1030 Is Displayed When Trying To Submit "Move messages from Exception to Normal Queue of Workflow Agent" FNDWF_MOVE_MSGS_EXCEP2NORMAL [ID 1451820.1]
For Enabling De-Queue we need run below procedure,