The CRUD matrix
| User | Messages | Drafts | File | ||
| Create a message | CU |
||||
| Send a message |
U |
||||
| Add new recipients to messages |
R | U | U |
||
| Attach files to messages |
U |
R | |||
| Delete drafts |
D | ||||
| Save drafts |
|||||
| View recipients addresses |
R | ||||
| View sended messages |
R | ||||
| View groups of recipients |
R | ||||
| View all my drafts | R |