| Category | Email Part | No. of Features |
| Header based | Header/Subject | 31 |
| Character based | Body | 7 |
| Word based | Body | 14 |
| Syntactic features | Body | 10 |
| Structural features | Body | 9 |
| Particular content (world/character) | Body | 10 |
| Size | Body | 1 |
| Links related features | Body | 2 |
| Attachment related features | Attachment | 6 |