private - channel_two_name - %s %d user1@email user %d user1@email user5@email user %d user5@email user6@email user %d user6@email %s user1@email user %d message 6 user1@email %d path/to/attachments/file_6.txt user1@email %d path/to/attachments/file_6.txt Completed %s user1@email user %d message 7 user1@email %d path/to/attachments/file_7.txt user1@email %d path/to/attachments/file_7.txt Completed %s user1@email user %d message 8 user1@email %d path/to/attachments/file_8.txt user1@email %d path/to/attachments/file_8.txt Completed user5@email user %d user5@email user6@email user %d user6@email user1@email user %d user1@email %d