# Category 15: User Distribution Lists Feature Bits

These feature bits allow a user to create and use distribution lists, which designate a group of mailboxes to send a single message to. A user distribution list can have up to 65,535 members. Each mailbox can have up to 99 distribution lists. User distribution lists can be used only by the user who is logged in to the mailbox where the list is stored.

Bit | Description | Required | Incompatible
--- | --- | --- | ---
032 | Make to user distribution list | 020, 040, 044 |
033 | Give to user distribution list | 024, 040, 044 |
036 | Auto receipt for user distribution list | 020, 032 and/or 033, 040, 044 | 021, 025
044 | Receive user distribution list messages | 040 |
074 | Create or modify user distribution list | 032 and/or 033, 070 |
134 | Broadcast message waiting status | 040 and/or 044, 070, 074 | 122
222 | Deny nesting of distribution lists | 070, 074 |