| unknown | if sender not in the contact table this is 1 | varchar(255) | NO | | 0 | |
| uri | | varchar(255) | NO | MUL | | |
| parent-uri | | varchar(255) | NO | MUL | | |
| unknown | if sender not in the contact table this is 1 | varchar(255) | NO | | 0 | |
| uri | | varchar(255) | NO | MUL | | |
| parent-uri | | varchar(255) | NO | MUL | | |