private - channel_two_name - %s %d user1@email user %d user1@email user4@email user %d user4@email %s user1@email user %d message 3 user1@email %d path/to/attachments/file_3.txt user1@email %d path/to/attachments/file_3.txt Completed %s user1@email user %d message 4 user1@email %d path/to/attachments/file_4.txt user1@email %d path/to/attachments/file_4.txt Completed %s user1@email user %d message 5 user1@email %d path/to/attachments/file_5.txt user1@email %d path/to/attachments/file_5.txt Completed user4@email user %d user4@email user1@email user %d user1@email %d