- Write a letter to another company at your Mailbox: goods you give and goods you ask for (up to 9 stacks each). Your Courier gathers your side; the other player accepts or declines; their Courier gathers theirs; both land as parcels to collect. A Courier with a horse delivers in half the time.
- Mailbox (right-click): letters for you (accept/decline), letters you sent and their status (Gathering, Delivered, Accepted, Coming back; Cancel), parcels to collect (Take All), Write a Letter (pick a company, then pick what you give from your storage and what you ask for from theirs; click to add one, shift-click a stack; each side up to nine stacks; Send Letter).
Mailbox
| Type | Workstation |
| ID | hirelings:mailbox |
| How to get | Crafting (recipe below) |
| Workstation for | Courier |
| Breaks like | Iron Block |
| Right-click | Mailbox screen |
| Notes | Hardness 3.5 |
Letter
| Type | Job tool |
| ID | hirelings:letter |
| Job tool for | Courier |
| How to get | Crafting (recipe below) |
Shapeless: the ingredients can go anywhere in the grid.
Package
| Type | Job tool |
| ID | hirelings:package |
| Stack size | 16 |
| Job tool for | Courier |
| How to get | Crafting (recipe below) |
Shapeless: the ingredients can go anywhere in the grid; any planks.
Last updated November 9, 2026