# Equivalence Partitioning — "Email" field

| TC ID | Input value | Class | Expected result |
|---|---|---|---|
| TC-07 | `user@mail.com` | Valid, complete address | Accepted |
| TC-08 | `user@mail` | Invalid (no top-level domain) | Error |
| TC-09 | `usermail.com` | Invalid (no @) | Error |
| TC-10 | empty string | Invalid (required field) | Error |
| TC-11 | `user+test@mail.com` | Valid (subaddressing) | Accepted |