| a category of mail for mailing large numbers of identical printed items to individual addressees at less than first-class rates, as circulars or bulletins. |
[buhlk-meyl] 
| to mail as bulk mail. |
| bulk mail | |
noun | |
| mail consisting of large numbers of identical items (circulars or advertisements) sent to individual addresses at less than 1st-class rates and paid for in one lot |