About Envelope
From ModrinthLetters. Packages. And Pigeons to deliver them across the world.
Description in text form
Pigeon
Friendly creature, that can be found in mountain areas or near a village
- Likes seeds of various kind, and will happily follow someone if they have some
- Hunted by Wild Cats, Ocelots and Foxes
Pigeonhole
A cozy house for pigeons to rest inside of, and leave their, ehm... “byproducts”Letter
Good alternative to a book, if you don’t have much to sayJust keep it away from foxes...
Package
Slightly inconvenient (but pretty cheap) way to reduce inventory clutterConvenient for deliveries, though
Sealing
A way to ensure an author and integrity of a Letter or PackageMailbox
Entrypoint into the fascinating world of mail delivery- Every Mailbox in the overworld must have an address
- Connecting a Mailbox to the mail network costs 3 experience levels
- Stores received mail
- Allows sending mail
Address Tag
- Use the item to open Address Selection GUI
- All available addresses are shown
- Use on a mailable item in GUI to set the recipient
- Can be used on a Mailbox to change its address
Delivery
When mail and seeds are inserted into a Mailbox, its front hatch will open, allowing nearby Pigeons to pick mail up and start a delivery- Pigeons can deliver mail (and return to) unloaded chunks without issues
- Delivering Pigeons ascend high above the clouds to make traveling long distances more efficient, thus they can only be seen while nearby a Mailbox
Courier Bat
Express deliveries at night- Delivers mail two times faster than Pigeons
- Will find Mailboxes with Spider Eyes anywhere in the world
Payback Tag
- Used on a mailable item to set the requested payback
- Anything that fits in the Package can be requested
Allows for a safe trade of items:
- Transaction will be handled by Mail Service
- Buyer receives Payback Box for the payment
- Mail will be kept in storage untill the buyer pays for it
- If buyer does not pay in time - mail will be returned back to sender
Services
Virtual addresses that can receive mail and perform various actions- Includes mail crafting system and recipes
- Extendable by datapacks, addons or KubeJS scripts
Charred Pigeon
Hostile mob found in the Nether- Has 1 in 5 chance to spawn carrying a Package
- Will transform back into a regular Pigeon when brought into the overworld
Collapsed Mail Hub
Structure floating above cloudsDovecote
Small structure built to house pigeons- Plains, Taiga, Savanna and Desert variants
<iframe width="1000" height="350" src="https://www.youtube.com/embed/Jd3qCB05vGs" title="Envelope Mod Devlog" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe> <iframe width="1000" height="350" src="https://www.youtube.com/embed/emig1jCE27o" title="Echoes In The Dark" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
Highlights
From source dataGame versions
Built for Minecraft 1.21.1.
Loaders
Runs on Fabric and NeoForge.
Footprint
Rated a light load on a server.
Envelope on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
- Server side
- Required on the server
- Server type needed
- Fabric, NeoForge
- Server load
- light
- Smallest plan we suggest
- Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 0.8.1, released 2026-10-26
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| Fabric | 1.21.1 | 1.21.1 |
| NeoForge | 1.21.1 | 1.21.1 |
From 9 recorded builds of Envelope.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 0.8.1 | 2026-10-26 | 1.21.1 | Fabric |
| 0.8.1 | 2026-10-26 | 1.21.1 | NeoForge |
| 0.8.0 | 2026-10-20 | 1.21.1 | NeoForge |
| 0.8.0 | 2026-10-20 | 1.21.1 | Fabric |
| 0.7.5 | 2026-08-15 | 1.21.1 | NeoForge |
| 0.7.5 | 2026-08-15 | 1.21.1 | Fabric |
Dependencies
- Required: modrinth project ohNO6lps (modrinth, not in our catalogue)
- Required: modrinth project P7dR8mSH (modrinth, not in our catalogue)
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Envelope on a Minecraft server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogGameplay & overhauls
New mechanics, content and overhauls that change how the game plays.
Runs on your server
From source side supportModrinth lists Envelope as required on the server. Check its Modrinth page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- FabricNeoForge
- Runs on
- Serverrequired on the server
- Game versions
- 1.21.1
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-27Open ↗
- ✓Authormortuusars, as published on Modrinth
- ✓LicenseGPL-3.0-onlyFree
Envelope, answered
Generated from the mod’s own source data.
Do my players need to install Envelope?
Modrinth lists Envelope as required on the server. Check its Modrinth page to see whether players need it too.
Which loaders does it support?
Fabric and NeoForge.
Is it free?
Yes. Envelope is free to download from Modrinth. Its license is GPL-3.0-only.
How do I add it to my Nxeon server?
Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

Run Envelope on a Minecraft server.
Deploy in about a minute from $4.99 a month, then add Envelope in one click.


















