payjoin · spacebear21 · Feb 14, 2026 · Feb 14, 2026 · Feb 14, 2026
diff --git a/.github/workflows/release-image.yml b/.github/workflows/release-image.yml
@@ -3,10 +3,10 @@ name: "Build and publish Docker image"
 on:
   pull_request:
     paths:
-      - payjoin-service/**
+      - payjoin-mailroom/**
   push:
     tags:
-      - payjoin-service-**
+      - payjoin-mailroom-**
   workflow_dispatch:
 
 jobs:
@@ -33,7 +33,7 @@ jobs:
           password: ${{ secrets.PAYJOIN_DOCKER_RW }}
 
       - name: Build and release image
-        run: nix run .#packages.x86_64-linux.payjoin-service-image.copyToRegistry
+        run: nix run .#packages.x86_64-linux.payjoin-mailroom-image.copyToRegistry
 
   build-pr:
     name: "Build and upload image artifact"
@@ -55,17 +55,17 @@ jobs:
         run: |
           TAG=$(git rev-parse --short HEAD)
 
-          nix build .#packages.x86_64-linux.payjoin-service-image.copyToDockerDaemon
+          nix build .#packages.x86_64-linux.payjoin-mailroom-image.copyToDockerDaemon
           result/bin/copy-to-docker-daemon
 
-          docker save docker.io/payjoin/payjoin-service:${TAG} -o payjoin-service-${TAG}.tar
+          docker save docker.io/payjoin/payjoin-mailroom:${TAG} -o payjoin-mailroom-${TAG}.tar
 
-          echo "Image saved: payjoin-service-${TAG}.tar"
-          ls -lh payjoin-service-${TAG}.tar
+          echo "Image saved: payjoin-mailroom-${TAG}.tar"
+          ls -lh payjoin-mailroom-${TAG}.tar
 
       - name: Upload image artifact
         uses: actions/upload-artifact@v4
         with:
-          name: payjoin-service-image-${{ github.sha }}
-          path: payjoin-service-*.tar
+          name: payjoin-mailroom-image-${{ github.sha }}
+          path: payjoin-mailroom-*.tar
           retention-days: 7
diff --git a/Cargo-minimal.lock b/Cargo-minimal.lock
@@ -2769,7 +2769,7 @@ dependencies = [
 ]
 
 [[package]]
-name = "payjoin-service"
+name = "payjoin-mailroom"
 version = "0.0.1"
 dependencies = [
  "anyhow",
@@ -2808,7 +2808,7 @@ dependencies = [
  "http",
  "once_cell",
  "payjoin",
- "payjoin-service",
+ "payjoin-mailroom",
  "rcgen 0.14.3",
  "reqwest",
  "rustls 0.23.31",

diff --git a/Cargo-recent.lock b/Cargo-recent.lock
@@ -2769,7 +2769,7 @@ dependencies = [
 ]
 
 [[package]]
-name = "payjoin-service"
+name = "payjoin-mailroom"
 version = "0.0.1"
 dependencies = [
  "anyhow",
@@ -2808,7 +2808,7 @@ dependencies = [
  "http",
  "once_cell",
  "payjoin",
- "payjoin-service",
+ "payjoin-mailroom",
  "rcgen 0.14.3",
  "reqwest",
  "rustls 0.23.31",

diff --git a/Cargo.toml b/Cargo.toml
@@ -7,7 +7,7 @@ members = [
   "payjoin-directory",
   "payjoin-test-utils",
   "payjoin-ffi",
-  "payjoin-service",
+  "payjoin-mailroom",
 ]
 resolver = "2"
 
@@ -16,7 +16,7 @@ payjoin-fuzz = { path = "fuzz" }
 ohttp-relay = { path = "ohttp-relay" }
 payjoin = { path = "payjoin" }
 payjoin-directory = { path = "payjoin-directory" }
-payjoin-service = { path = "payjoin-service" }
+payjoin-mailroom = { path = "payjoin-mailroom" }
 payjoin-test-utils = { path = "payjoin-test-utils" }
 
 [profile.crane]

diff --git a/README.md b/README.md
@@ -37,15 +37,9 @@ The main Payjoin Dev Kit library which provides tools for implementing both Asyn
 
 A CLI tool which performs no-frills Payjoin. It is a reference implementation of the Payjoin Dev Kit which uses a Bitcoin Core wallet.
 
-### [`ohttp-relay`](https://github.com/payjoin/rust-payjoin/tree/master/ohttp-relay)
+### [`payjoin-mailroom`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-mailroom)
 
-A Rust implementation of an Oblivious HTTP (OHTTP) relay resource.
-
-**Disclaimer: Both this crate and the [IETF paper](https://ietf-wg-ohai.github.io/oblivious-http/draft-ietf-ohai-ohttp.html) are undergoing active revision. Use at your own risk.**
-
-### [`payjoin-directory`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-directory)
-
-A reference implementation for a Payjoin Directory which stores and forwards HTTP client messages between the sender and the receiver to allow for Async Payjoin transactions. Async Payjoin clients make requests to the directory using [Oblivious HTTP (OHTTP)](https://www.ietf.org/rfc/rfc9458.html) which prevents the directory from being able to link payjoins to specific client IP addresses.
+An [Oblivious HTTP (OHTTP) Relay](https://github.com/payjoin/rust-payjoin/tree/master/ohttp-relay) and a BIP77 [Payjoin Directory](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-directory) combined in one binary.
 
 ### [`payjoin-test-utils`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-test-utils)
 

diff --git a/contrib/test.sh b/contrib/test.sh
@@ -24,7 +24,7 @@ if [ -f "$LOCKFILE" ]; then
 fi
 
 DEPS="recent minimal"
-CRATES="ohttp-relay payjoin payjoin-cli payjoin-directory payjoin-ffi payjoin-service"
+CRATES="ohttp-relay payjoin payjoin-cli payjoin-directory payjoin-ffi payjoin-mailroom"
 
 for dep in $DEPS; do
     cargo --version

diff --git a/flake.nix b/flake.nix
@@ -162,7 +162,7 @@
               "payjoin-cli" = "--features v1,v2";
               "payjoin-directory" = "";
               "ohttp-relay" = "";
-              "payjoin-service" = "--features acme,telemetry";
+              "payjoin-mailroom" = "--features acme,telemetry";
             };
 
         # nix2container for building OCI/Docker images
@@ -193,7 +193,7 @@
             tag = self.shortRev or "dirty";
           in
           {
-            "payjoin-service-image" = mkContainerImage "payjoin-service" packages.payjoin-service tag;
+            "payjoin-mailroom-image" = mkContainerImage "payjoin-mailroom" packages.payjoin-mailroom tag;
           };
 
         devShells = builtins.mapAttrs (

diff --git a/payjoin-directory/src/lib.rs b/payjoin-directory/src/lib.rs
@@ -194,7 +194,7 @@ impl<D: Db> Service<D> {
         debug!("Service::serve_request: {:?}", &path_segments);
 
         // Best-effort validation that the relay and gateway aren't on the same
-        // payjoin-service instance
+        // payjoin-mailroom instance
         if let Some(header_value) =
             parts.headers.get(ohttp_relay::sentinel::HEADER_NAME).and_then(|v| v.to_str().ok())
         {

diff --git a/payjoin-ffi/dart/native/Cargo.toml b/payjoin-ffi/dart/native/Cargo.toml
@@ -27,5 +27,5 @@ payjoin-ffi = { path = "../.." }
 ohttp-relay = { path = "../../../ohttp-relay" }
 payjoin = { path = "../../../payjoin" }
 payjoin-directory = { path = "../../../payjoin-directory" }
-payjoin-service = { path = "../../../payjoin-service" }
+payjoin-mailroom = { path = "../../../payjoin-mailroom" }
 payjoin-test-utils = { path = "../../../payjoin-test-utils" }
diff --git a/payjoin-ffi/javascript/test-utils/Cargo.toml b/payjoin-ffi/javascript/test-utils/Cargo.toml
@@ -27,8 +27,8 @@ path = "../../../payjoin"
 [patch.crates-io.payjoin-directory]
 path = "../../../payjoin-directory"
 
-[patch.crates-io.payjoin-service]
-path = "../../../payjoin-service"
+[patch.crates-io.payjoin-mailroom]
+path = "../../../payjoin-mailroom"
 
 [patch.crates-io.payjoin-test-utils]
 path = "../../../payjoin-test-utils"

diff --git a/payjoin-service/.gitignore → payjoin-mailroom/.gitignore b/payjoin-service/.gitignore → payjoin-mailroom/.gitignore
diff --git a/payjoin-service/Cargo.toml → payjoin-mailroom/Cargo.toml b/payjoin-service/Cargo.toml → payjoin-mailroom/Cargo.toml
@@ -1,8 +1,8 @@
 [package]
-name = "payjoin-service"
+name = "payjoin-mailroom"
 version = "0.0.1"
-description = "Unified Payjoin Directory and OHTTP Relay service"
-repository = "https://github.com/payjoin/rust-payjoin/tree/master/payjoin-service"
+description = "Combined Payjoin Directory and OHTTP Relay"
+repository = "https://github.com/payjoin/rust-payjoin/tree/master/payjoin-mailroom"
 keywords = ["bip77", "bitcoin", "ohttp", "payjoin", "privacy"]
 categories = [
   "cryptography::cryptocurrencies",

diff --git a/payjoin-mailroom/README.md b/payjoin-mailroom/README.md
@@ -0,0 +1,54 @@
+# Payjoin Mailroom
+
+The Payjoin Mailroom is a unified Payjoin Directory and OHTTP Relay server. Combines [payjoin-directory](../payjoin-directory/README.md) and [ohttp-relay](../ohttp-relay/README.md) into a single binary.
+
+Note that this binary is under active development and thus the CLI and configuration file may be unstable.
+
+## Configuration
+
+payjoin-mailroom reads configuration from `config.toml` (or the path given with `--config`). Every setting can also be supplied via environment variables prefixed with `PJ_`, using double underscores for nesting (e.g., `PJ_TELEMETRY__ENDPOINT`).
+
+## Usage
+
+### Cargo
+
+```sh
+cargo run
+```
+
+### Docker Compose
+
+A simple [docker-compose.yml](docker-compose.yml) is provided for convenience.
+
+```sh
+docker compose up
+```
+
+### Nix
+
+The rust-payjoin flake also provides `payjoin-mailroom` as a package.
+
+```sh
+nix run .#payjoin-mailroom -- --config payjoin-mailroom/config.toml
+```
+
+## Telemetry
+
+payjoin-mailroom supports **optional** OpenTelemetry-based telemetry (metrics, traces, and logs). Build with `--features telemetry` and add a `[telemetry]` section to your config:
+
+```toml
+[telemetry]
+endpoint = "https://otlp-gateway-prod-us-west-0.grafana.net/otlp"
+auth_token = "<base64 instanceID:token>"
+operator_domain = "your-domain.example.com"
+```
+
+Or set the equivalent environment variables:
+
+```sh
+export PJ_TELEMETRY__ENDPOINT="https://otlp-gateway-prod-us-west-0.grafana.net/otlp"
+export PJ_TELEMETRY__AUTH_TOKEN="<base64 instanceID:token>"
+export PJ_TELEMETRY__OPERATOR_DOMAIN="your-domain.example.com"
+```
+
+When no `[telemetry]` section is present and no `PJ_TELEMETRY__*` variables are set, it falls back to local-only console tracing.
diff --git a/payjoin-mailroom/contrib/test.sh b/payjoin-mailroom/contrib/test.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+set -e
+
+cargo test --locked --package payjoin-mailroom --verbose --all-features --lib
diff --git a/payjoin-service/docker-compose.yml → payjoin-mailroom/docker-compose.yml b/payjoin-service/docker-compose.yml → payjoin-mailroom/docker-compose.yml
@@ -1,6 +1,6 @@
 services:
-  payjoin-service:
-    image: payjoin/payjoin-service:latest
+  payjoin-mailroom:
+    image: payjoin/payjoin-mailroom:latest
     command: ["--config", "/config/config.toml"]
     environment:
       RUST_LOG: "info"

diff --git a/payjoin-service/src/cli.rs → payjoin-mailroom/src/cli.rs b/payjoin-service/src/cli.rs → payjoin-mailroom/src/cli.rs
diff --git a/payjoin-service/src/config.rs → payjoin-mailroom/src/config.rs b/payjoin-service/src/config.rs → payjoin-mailroom/src/config.rs
diff --git a/payjoin-service/src/lib.rs → payjoin-mailroom/src/lib.rs b/payjoin-service/src/lib.rs → payjoin-mailroom/src/lib.rs
@@ -45,7 +45,7 @@ pub async fn serve(config: Config, meter_provider: Option<SdkMeterProvider>) ->
     Ok(())
 }
 
-/// Serves payjoin-service with manual TLS configuration.
+/// Serves payjoin-mailroom with manual TLS configuration.
 ///
 /// Binds to `config.listener` (use port 0 to let the OS assign a free port) and returns
 /// the actual bound port and a task handle.
@@ -96,7 +96,7 @@ pub async fn serve_manual_tls(
     Ok((port, handle))
 }
 
-/// Serves payjoin-service with ACME-managed TLS certificates.
+/// Serves payjoin-mailroom with ACME-managed TLS certificates.
 ///
 /// Uses `tokio-rustls-acme` to automatically obtain and renew TLS
 /// certificates from Let's Encrypt via the TLS-ALPN-01 challenge.

diff --git a/payjoin-service/src/main.rs → payjoin-mailroom/src/main.rs b/payjoin-service/src/main.rs → payjoin-mailroom/src/main.rs
@@ -1,6 +1,6 @@
 use clap::Parser;
 use opentelemetry_sdk::metrics::SdkMeterProvider;
-use payjoin_service::{cli, config};
+use payjoin_mailroom::{cli, config};
 use tracing_subscriber::filter::LevelFilter;
 use tracing_subscriber::EnvFilter;
 
@@ -20,10 +20,10 @@ async fn main() -> anyhow::Result<()> {
 
     #[cfg(feature = "acme")]
     if config.acme.is_some() {
-        return payjoin_service::serve_acme(config, meter_provider).await;
+        return payjoin_mailroom::serve_acme(config, meter_provider).await;
     }
 
-    payjoin_service::serve(config, meter_provider).await
+    payjoin_mailroom::serve(config, meter_provider).await
 }
 
 fn init_tracing() -> Option<SdkMeterProvider> {
@@ -41,7 +41,7 @@ fn init_tracing_with_telemetry(telemetry: &config::TelemetryConfig) -> SdkMeterP
     use opentelemetry_sdk::Resource;
 
     let resource = Resource::builder()
-        .with_service_name("payjoin-service")
+        .with_service_name("payjoin-mailroom")
         .with_attribute(KeyValue::new("operator.domain", telemetry.operator_domain.clone()))
         .build();
 

diff --git a/payjoin-service/src/metrics.rs → payjoin-mailroom/src/metrics.rs b/payjoin-service/src/metrics.rs → payjoin-mailroom/src/metrics.rs
@@ -19,7 +19,7 @@ pub struct MetricsService {
 impl MetricsService {
     pub fn new(provider: Option<SdkMeterProvider>) -> Self {
         let provider = provider.unwrap_or_default();
-        let meter = provider.meter("payjoin-service");
+        let meter = provider.meter("payjoin-mailroom");
 
         let http_requests_total = meter
             .u64_counter(HTTP_REQUESTS)

diff --git a/payjoin-service/src/middleware.rs → payjoin-mailroom/src/middleware.rs b/payjoin-service/src/middleware.rs → payjoin-mailroom/src/middleware.rs
diff --git a/payjoin-service/README.md b/payjoin-service/README.md
diff --git a/payjoin-service/contrib/test.sh b/payjoin-service/contrib/test.sh
diff --git a/payjoin-test-utils/Cargo.toml b/payjoin-test-utils/Cargo.toml
@@ -20,7 +20,7 @@ payjoin = { version = "1.0.0-rc.1", features = [
   "_manual-tls",
   "_test-utils",
 ] }
-payjoin-service = { path = "../payjoin-service", features = ["_manual-tls"] }
+payjoin-mailroom = { path = "../payjoin-mailroom", features = ["_manual-tls"] }
 rcgen = "0.14.3"
 reqwest = { version = "0.12.23", default-features = false, features = [
   "rustls-tls",